2010 ANNUAL WATER REPORT IMPERIAL IRRIGATION DISTRICT

Transcription

1 2010 ANNUAL WATER REPORT IMPERIAL IRRIGATION DISTRICT

2 Imperial Irrigation District Imperial Unit Canal Network For a regional view of IID s District Boundaries, see page 15.

3 contents Imperial Unit Canal Network Letter from the Water Manager Water Operations Water Department History Grants & Projects Vegetation Management Plan 8 Water Quality Improvement 8 Updated IID Website 8 AAC Buoy & Warning Sign Installation 9 Voluntary TMDL Compliance Program 9 AAC Environmental/Public Works Project of the Year Easter Earthquake 10 AAC Siphon Project 10 Imperial Integrated Regional Water Management Plan 10 Vail Canal Automation 11 Brawley Bypass 11 Illegal Dump Site Cleanup 12 Water Rights California Law 13 Law of the River 13 Water Policy Interim Water Supply 17 Equitable Distribution Plan 17 Quantification Settlement Agreement IID Receives $50 Million for Capital Expenses 18 Efficiency Conservation Definite Plan 18 Efficiency Conservation Program 19 Fallowing for Conservation 21 Water Transfer Mitigation Program 22 Salton Sea Ecosystem 24 Water Facts & Figures Contractual 2010 IID Use per QSA 26 IID Colorado River Water Use Population in IID's Imperial Unit versus Water Sales to 27 Cities Water Sales versus Rainfall Inventory of Areas Receiving Water Water Overview Economic Impact of Imperial Valley Agriculture IID Top Twelve Crops by Acres 30 Imperial County Ag Production Values 31 IID Water Sales in Acre-Feet IID Water Rate Schedule 31 Acronyms 32 General Information Annual Water Report 1

4 2010 Annual Water Report Letter From the Water Manager The Imperial Irrigation District Water Department strives to provide the highest level of service to its customers. On April 4, 2010, the Water Department proved its dedication after a 7.2 magnitude earthquake shook the Imperial Valley, damaging miles of drains, canals, and infrastructure. Despite the obstacles of a natural disaster, countless Water Department employees worked diligently to keep water flowing. The Water Department continues to participate in a number of projects and programs to best serve its customers. The projects described in this report were performed to increase efficiency, provide low rates and reliable service to IID customers, and protect the Imperial Valley s water resources. Highlighted projects from 2010 include: Water Department reorganization to make IID more responsive to its water users, installation of buoys and warning signs along the All-American Canal, retrofitting the All-American Canal New River siphon to repair earthquake damage, continued implementation and monitoring of conservation programs to generate conserved water for water transfer programs, and installation of artificial owl burrows at the Managed Marsh Complex to encourage burrowing owl nesting as part of the Quantification Settlement Agreement (QSA) water transfer environmental mitigation. Facing a declining economy, and continued drought across the Lower Colorado River Region, the Water Department continues to pursue IID s overall mission and vision of protecting Imperial Valley s water rights and providing the highest level of service to customers. We re proud to have you as a partner as we, working as a fiscally responsible agency, continue to provide you with reliable, efficient, and affordably priced water delivery service. Michael L. King Manager 2 Imperial Irrigation District

5 Water Operations Imperial Irrigation District s (IID) Water Department is headed by the Water Manager and Water Administration Section. Under Water Administration are two functions: Support Services and Operations and Maintenance (O&M). Four (4) sections provide support services: Construction Resources; Engineering Services; System Control, Monitoring, and Data Management; and Agricultural Water Management. O&M is carried out by the Imperial Dam and All-American Canal (AAC) Section and by North End and South End Divisions. The structure, staffing and function of these sections and divisions are described below. Water Manager and Water Administration The Water Department Manager and Water Administration Section are accountable for the performance of the Water Department, Water Supply Planning [Colorado River and Quantification Settlement Agreement (QSA)], and Budget and Control. This section interfaces with the Board of Directors, General Manager, and the public to ensure effective communication and administration of department policies and procedures. Water Administration also ensures that the other sections, divisions, and units within the Water Department are meeting goals and objectives established in IID s Strategic Plan. Engineering Services Engineering Services Section provides planning, design, drafting, surveying, inspection, and construction support for the Water Department, developers, special fund, outside agencies, Energy Department (occasional surveying, drafting, etc.) and other capital maintenance and planning projects. This section manages and coordinates the development of the Capital Improvement Program for the Water Department. This section also provides protection of IID interests through reviewing technical and legal documents involving policies, procedures, real estate, engineering, finances, O&M, construction, water resources, etc. Construction Resources Construction Resources Section provides the labor and equipment needed to construct and maintain Water Department facilities based on requests from divisions and other sections. The Construction Resources Section is comprised of five (5) units: Western Division, Irrigation Maintenance, Drainage Maintenance, Heavy Equipment, and Construction Management. System Control, Monitoring & Data Management System Control, Monitoring and Data Management Section maintains automated control and monitoring sites located throughout the IID Imperial Unit (irrigation system, drains, direct to sea, etc.) This section conducts flow measurements and oversees data management for the Water Information System (WIS), TruePoint, Geographic Information System (GIS), and water delivery decision support systems Annual Water Report 3

6 Field of onions for seed production. Agricultural Water Management Agricultural Water Management (AWM) Section is comprised of five (5) units: Administration, On-Farm Conservation, Water Quality/Total Maximum Daily Load (TMDL), Agricultural Water Science, and Environmental Mitigation. Section staff is involved in planning and managing programs that protect and/ or conserve the region s water resources and provide outreach to local farmers, interacts with agricultural water users regarding on-farm water use and delivery system management, is responsible for compliance with State water quality mandates, and represents IID in water use coordination and planning efforts. Environmental concerns related to the QSA are addressed by the section s Environmental Mitigation Unit. Imperial Dam & AAC Imperial Dam and AAC Section manages diversion of Colorado River water and its conveyance through the AAC. This section plans and implements comprehensive strategies and programs for the construction, maintenance and repair of Senator Wash, Imperial Dam, AAC drains, the main canals, and related structures. North End & South End Divisions North End and South End Divisions primary responsibility is to economically and efficiently deliver water to IID customers. These divisions are responsible for maintenance of IID s water distribution and drainage systems. Division staff take customer water orders, maintain water cards, and manage service pipe orders and small-acreage accounts. Division staff also coordinates water delivery to match their daily allotment and manages carryovers to agricultural customers as necessary. 4 Imperial Irrigation District

7 Water Department History Formation & Operation IID was formed in 1911, under the California Irrigation District Act, to acquire properties of the bankrupt California Development Company and its Mexican subsidiary to import and distribute raw Colorado River water. By 1922, IID had acquired 13 mutual water companies, which had developed and operated distribution canals in the Imperial Valley. By the mid-1920s, IID was delivering water to nearly 500,000 acres. Since 1942, water has been diverted at Imperial Dam on the Colorado River into the AAC. IID ended its fifty-year operation in Mexico by selling its holdings to the Mexican government in As a public entity, IID does not make a profit from the sale of water. All benefits stay in the local area in the form of lower rates and progressive services to meet local needs. As such, IID has a special commitment to innovation and the wise use of its resources. Salinity of Colorado River water delivered to IID users has averaged 744 ppm over the last 21 years ( ). This is salt that, without drainage, would accumulate in the agricultural soils in the Imperial Valley. To mitigate salt accumulation, tiledrain lines have been installed under nearly all agricultural lands by Imperial Valley farmers. Colorado River Salinity at All-American Canal below Drop Weighted Annual Average (ppm) Annual Water Report 5

8 Lined portion of the All- American Canal. In 1924, President Calvin Coolidge signed Orders of Withdrawal creating a public water reserve around the Salton Sea for the express purpose of storing drainage waters from irrigated lands in Imperial and Coachella valleys and for natural runoff. IID s extensive gravity flow drainage system discharges into this public water reserve. Water Use Efficiency & Conservation IID and its agricultural water users have a history of efficient water use. They have implemented many agriculture based programs over the last 70 years. Some of IID s earlier conservation projects, such as the on-farm tile drainage and seepage recovery programs, were started in the 1940s. In the 1950s, seepage recovery, canal and lateral concrete lining, and remote control projects were completed as part of IID s water distribution system conservation effort. In the 1960s, drain pipelines and additional seepage recovery projects were completed and the concrete S a l t o n S e a F o r m a t i o n The present day Salton Sea was formed in 1905, when Colorado River water flowed through a break in an irrigation diversion structure that had been constructed along the US/Mexican border to divert the river s flow to agricultural lands in the Imperial Valley. Until that break was repaired in 1907, the uncontrolled diversion of river water drained into the Salton Sink, a closed interior basin whose lowest point is about 278 feet below mean sea level. Over the past 2000 years, the Colorado River s course has changed direction several times. At times, the river discharged to the Gulf of California as it does today. At other times it flowed into the Salton Sink. Lake Cahuilla, the name used for any of the several prehistoric lakes to have occupied the Salton Sink, dried up some 300 years ago. Archaeological records indicate that the Colorado River actually headed northwest into the Salton Sink or Salton Trough more often than it headed south into the Gulf of California. >> Source: page 11 6 Imperial Irrigation District

9 lining program accelerated. In the 1970s, IID completed regulating www. reservoir projects and administrative water conservation programs. During the 1980s, new water conservation projects and programs were started, including tailwater return system automation and irrigation management programs that continue to the present. Water Conservation and Transfer Programs Throughout the 1990s, IID involvement in water conservation projects and programs continued at the onfarm, regional, state, and federal levels. January 1990 marked the inception of construction on projects resulting from a 1988 agreement between IID and Metropolitan Water District of Southern California (MWD) for the transfer of conserved water in the amount of up to 110,000 acre-feet per year (AFY) for a 35-year period. Effective January 1, 2007, the transfer amount Colorado River Activities >> Colorado River Drought Management Plan: >> Lower Colorado River Multi-Species Conservation Program: was fixed at 105,000 AFY as part of the terms of the Second Amendment to the 1989 Approval Agreement among IID, MWD, Palo Verde Irrigation District (PVID), and Coachella Valley Water District (CVWD). In 1998, IID and San Diego County Water Authority (SDCWA) entered into a long-term conservation and water transfer agreement, which benefits all Californians. In June 2002, IID published the Final Environmental Impact Report/Environmental Impact Statement and a draft Habitat Conservation Plan (HCP) required for IID/SDCWA water conservation and transfer program. In December 2002, the State Water Resources Control Board approved the transfer Salton Sea Water Surface Elevation - End-of-Year at Fig Tree John* *October 2009, the Fig Tree John site was relocated to accommodate the lowering sea elevation Feet below Mean Sea Level Annual Water Report 7

10 Grants and Projects Vegetation Management Plan IID s Vegetation Management Plan was completed and implemented in the fourth quarter of The plan is designed to improve water quality by instituting sound management and vegetation control practices. Adaptive vegetation management techniques will assist with maintaining ecosystems, managing vegetation in specified areas, stopping land degradation, promoting ecological processes, reducing adverse environmental effects, and better meeting water quality standards in IID s water distribution and drainage systems. Proper maintenance of earth channel side-slopes assists erosion control to reduce sediments. Under the new cleaning process, mechanical maintenance generally proceeds from upstream to downstream (in the direction of flow) so water is filtered by downstream vegetation before the vegetation is removed. Sediment is being reduced by: training operators to recognize beneficial and non-beneficial plants, incorporating Global Positioning System (GPS) cleaning equipment to maintain proper grade slope, and/or restoring impaired infrastructure. Water Quality Improvement IID s Water Department was awarded a $900,000 non-matching grant through the state s Proposition 50/84 Agricultural Water Quality Grant Program. The grant funds will be used for implementation of Best Management Practices (BMPs) that address TMDL water quality goals for IID drains, specified in IID s drain water quality improvement plan, specified in IID s Drain Water Quality Improvement Plan. The financial resources will be used to: purchase GPS equipment to be used for precise drain cleaning operations, train GPS operators, implement a water quality improvement Updated IID Website IID s website has been redesigned to improve usability, including a Spanish section featuring translation of customer-focused pages. IID s website averages 50,000 visits per month. The redesign is intended to ensure the site remains effective and user-friendly. 8 Imperial Irrigation District

11 AAC Buoy & Warning Sign Installation In 2010, IID began installing buoys and warning signs along the 80-mile AAC. 105 buoy lines will be installed one mile apart in unlined sections and half-mile intervals in lined sections. Installation is expected to be completed in July Over 1,300 warning signs were installed along the AAC. program for drains with high sediment concentrations, study the use of vegetation to stabilize drain banks, and monitor drain water quality. This program, implemented in 2002, has prevented more than 33,000 tons of silt from entering the New and Alamo rivers and the Salton Sea. As of the close of 2010, 27,030 BMPs were in place on fields within the Imperial Valley, and 7,990 in the New River drainshed. IID drains contain suspended silt in the water and IID is on track to reduce its silt load by 50% as mandated by silt TMDL regulations. Voluntary TMDL Compliance Program In 2010, the IID Board of Directors voted unanimously to continue funding the Imperial County Farm Bureau Voluntary TMDL Compliance Program in the amount of $35,000. The program helps farmers meet tailwater silt discharge reduction goals. Silt traveling through agricultural drain water can carry unwanted nutrients and pesticides into the local drainage system and ultimately the Salton Sea. Participating farmers implement BMPs designed to reduce velocity and/or filter water leaving their fields. Planting vegetation to filter water and reinforcing ditch slopes to decrease erosion are among mitigation strategies used. Advanced techniques include laser-leveling fields and sprinkler irrigation for germination. This voluntary program, which has 98 percent Imperial Valley grower participation, has significantly reduced the amount of silt entering drains. Participants are required to attend an annual educational workshop and submit an annual report explaining the BMPs used on their fields. Program managers work closely with the farmers, IID, and California Regional Water Quality Control Board (Colorado River Basin Region) to ensure that goals are being met. AAC Environmental/Public Works Project of the Year The American Public Works Association awarded the AAC Lining Project the Public Works Project of the Year award during a ceremony in Boston, Massachusetts. Considered a model for partnerships among state and local water agencies to invest in California s water supply, the project was honored in the environmental category for projects over $75 million. The AAC Lining Project was authorized by US Congress, and is a key element of the 2003 QSA to reduce seepage. The project involved concrete lining 23 miles of the 80-mile earthen canal and is expected to annually conserve 67,700 AF of water Annual Water Report 9

12 7.2 Easter Earthquake On April 4, 2010, a 7.2 magnitude earthquake centered 29 miles southeast of Mexicali, Mexico, caused significant damage throughout the Imperial Valley, including IID facilities and infrastructure. IID, local contractors, and multiple government agencies quickly responded to maintain water service. California Emergency Management Agency (Cal EMA) provided assistance to local government and US President Obama ordered federal aid to supplement state and local recovery efforts related to the earthquake through the Federal Emergency Management Agency (FEMA). The 7.2 earthquake initiated 195 repair projects in IID water conveyance systems, ranging from $20,000 to over $5 million. All repairs are expected to be completed by October AAC Siphon Project The AAC New River Siphon was severely damaged by the 7.2 magnitude earthquake. IID and US Bureau of Reclamation (USBR) assessed damages and identified the following necessary repairs: reinforce north and south embankments of the AAC New River Siphon; stabilize the wasteway structure and inject grout under the wasteway chute; seal the construction joint between the box culvert and chute; replace wasteway outlet of All-American Drain 14; install two vertical drains on the top embankment at each side of the box culvert; seal cracks in the siphon inlet structure and wasteway structure; and replace the sluiceway beneath the siphon pipes. The IID Board of Directors adopted an Emergency Proclamation which enabled IID to be eligible for reimbursement from Cal EMA. President Obama declared a major disaster in the state of California on May 7, 2010, and ordered the FEMA to aid State and local recovery efforts related to the earthquake. FEMA and Cal EMA will reimburse IID with percent of the eligible retrofitting cost of over $5 million. A majority of the retrofitting project is expected to be completed in Imperial Integrated Regional Water Management Plan The Imperial Integrated Regional Water Management Plan (IRWM Plan) mission is to preserve and enhance the economic and environmental health and well-being for the Imperial Region through the regional stewardship and comprehensive management of water resources in a practical, cost effective and responsible manner. In the near term, the IRWM Plan will identify priorities for regional projects and assist the region in qualifying for available bond funding through Propositions 84 and 1E. The two-year schedule to complete the regional plan is largely driven by the grant-funding cycle of the California Department of Water Resources (CDWR). The IRWM Plan is a collaborative, stakeholder-driven process with a 40-year planning horizon. Benefits of the regional plan are expected to include protecting local water rights; defining a long-term, sustainable and reliable water supply portfolio; maintaining 10 Imperial Irrigation District

13 local political unity; and creating access to state funding. The Water Forum has been meeting since June 2010 to address water supply reliability, water quality, environmental resources and land use management in the Imperial Region. In 2010, the Water Forum established a website ( org); adopted the IRWM Plan Charter; Mission, Goals and Objectives; and prioritized four of Imperial IRWM Plan s five goals: 1. Increase water supply 2. Protect water quality 3. Environmental protection and enhancement 4. Flood protection and stormwater management Develop regional policies (overarching; not prioritized). In September 2010, the Project Management Team submitted to CDWR an application for a $1 million planning grant to assist in this effort. In 2011, the Water Forum will solicit local projects and programs for grant opportunities. Ultimately, Water Forum stakeholders will take the IRWM Plan to their governing bodies for adoption. Once this plan is adopted, public water resource agencies, nonprofit organizations, and other stakeholders in the region will be eligible to receive funding for water resource projects in future state of California grant cycles. Vail Canal Automation The third and final phase of the Vail Automation Project is expected to be completed under budget in February In this final phase of the project, IID is installing eight (8) automated drop-leaf gates on six separate Vail Canal laterals: Vail 1 Heading; Vail 2 Check; Vail 2 Heading; Vail 2A Check; Vail 2A Heading; and Vail 3 Heading. Since phase one, all installed sites are connected via radio to IID s Supervisory Control and Data Acquisition (SCADA) system. Cellular radio communication allows IID to control the gates and collect data. Instantaneous data are displayed on a laptop computer in the zanjero s vehicle using a cellular connection to the main server. This helps zanjeros make better-informed decisions in real-time, thus increasing efficiency. Water delivery information generated is stored in IID s WIS. Brawley Bypass The Brawley Bypass Expressway project to connect State Route (SR) 111 to SR 86 is being constructed by the California Department of Transportation (Caltrans) in three stages. From fall 2000 through 2010, IID Energy and Water Department staffs and consultants prepared designs, reviewed impacts to and relocated IID s canal, drainage, and electrical systems in support of the Caltrans project. By the end of 2010, nearly all impact mitigation projects and all IID relocation work for the final stage were completed Annual Water Report 11

14 Before Illegal Dump Site Cleanup After In 2007, IID received orders from Imperial County Public Health Department to clean up 15 illegal dump sites located on IID property. Sites contained household trash, tires, cars, farm equipment, buckets of used oil, etc. In 2008, IID applied for grant funds from the California Integrated Waste Management Board (now called Cal- Recycle) to assist in the cost of this large cleanup effort. The grant funding was provided in 2009 through the Solid Waste Disposal and Co-disposal Site Cleanup Program. IID began cleanup in November 2009 and expects to complete the program by May Imperial Irrigation District

15 Water Rights California Law IID has a longstanding right to divert Colorado River water, and holds legal title to all its water and water rights in trust for landowners within the district (California Water Code and 22437; Bryant v. Yellen, 447 U.S. 352, 371 (1980), fn.23.). Beginning in 1885 a number of individuals, as well as the California Development Company, made a series of appropriations of Colorado River water under the stipulations of California law for use in the Imperial Valley. Law of the River The right to water from the Colorado River is governed by numerous compacts, state and federal laws, court decisions and decrees, contracts, and regulatory guidelines collectively known as the Law of the River. These documents apportion the water and regulate the use and management of the Colorado River among the seven basin states and Mexico. A brief review of those parts that impact the Imperial Irrigation District follows: Law of the River www. >> For a synopsis of the most significant documents: The Colorado River Compact (1922): In 1921 representatives from the seven Colorado River basin states, with the authorization of their legislatures and at the urging of the Federal government, began negotiations regarding the distribution of water from the Colorado River. In November of 1922, the representatives from the upper (Colorado, New Mexico, Utah and Wyoming) and lower (Arizona, California, and Nevada) basin states signed the Colorado River Compact (Compact), an interstate agreement giving each basin perpetual rights to annual apportionments of 7.5 million acrefeet (MAF) of Colorado River water. The Boulder Canyon Project Act (1928): The Compact was made effective by provisions in the 1928 Boulder Canyon Project Act (45 Statute 1056), which authorized the construction of Hoover Dam and the All-American Canal and served as the United States consent to accept the Compact. Officially enacted on June 25, 1929, through a Presidential Proclamation, this act resulted in the ratification of the Compact by six of the basin states and also required California to limit its annual consumptive use to 4.4 MAF of the lower basin s apportionment plus not less than half of any excess or surplus water unapportioned by the Compact. Arizona refused to sign and subsequently filed a lawsuit. California abided by this federal mandate through the implementation of its 1929 Limitation Act. The Boulder Canyon Project Act further authorized the Secretary to contract for the storage of water...and for the delivery thereof...for irrigation and domestic uses, and further defined the lower basin s apportionment split with an annual allocation of 0.3 MAF to Nevada and 2.8 MAF to Arizona. While the three states never formally accepted or agreed to these terms, a 1964 Supreme Court decision (Arizona vs. California, 373 U.S. 546) declared their consent to be inconsequential since the Boulder Canyon Project Act was authorized by the Secretary Annual Water Report 13

16 California Seven-Party Agreement (1931): Following implementation of the Boulder Canyon Project Act, the Secretary requested that California make recommendations regarding distribution of its allocation of Colorado River water. In August of 1931, under the Chairmanship of the State Engineer, the California Seven-Party Agreement was developed and authorized by the affected parties to prioritize California water rights. The Secretary accepted this agreement and established these priorities through General Regulations issued in September of The first four priority allocations account for California s annual apportionment of 4.4 MAF, with agricultural entities using 3.85 MAF of that total. The remaining priorities are defined for years in which the Secretary declares that excess waters are available. California Colorado River Annual Water Right Priorities Priority Order User Apportionment 1 Palo Verde Irrigation District - for use exclusively on 104,500 acres of Valley land in and adjoining district 2 Yuma Project - for use on California Division, not exceeding 25,000 acres of land 3a California Colorado River Annual Water Right Priorities Imperial Irrigation District - for use on lands served by All American Canal in Imperial and Coachella Valleys 3b Palo Verde Irrigation District - for use exclusively on additional 16,000 acres of mesa lands 4 Metropolitan Water District - for use on the Southern California Coastal Plain 3,850,000 AF 550,000 AF Subtotal: 4,400,000 AF California limit (not including surplus waters) of Colorado River water per Boulder Canyon Project Act and 1929 Limitation Act 5a Metropolitan Water District - for use on the Southern California Coastal Plain 550,000 AF 5b City and County of San Diego - through MWD 112,000 AF 6a Imperial Irrigation District - lands served by All-American Canal in Imperial and Coachella Valleys 300,000 AF 6b Palo Verde Irrigation District - for use exclusively on 16,000 acres of mesa lands 7 California Agricultural Use - Colorado River Basin lands in California All remaining available water Present Perfected Rights (PPRs) 219,790 AF (or consumptive use for 33,604 acres) 38,270 AF (or consumptive use for 6,294 acres) 2,600,000 AF (or consumptive use for 424,145 acres) (IID only) Arizona v. California US Supreme Court Decision (1964): In 1963, the Supreme Court issued a decision settling a 25-year old dispute between Arizona and California, which stemmed from Arizona s desire to build the Central Arizona Project (CAP) to enable use of its full apportionment. California argued that Arizona s use of water from the Gila River, a Colorado River tributary, constituted use of its Colorado River apportionment, and that California had developed a historical use of some of Arizona s apportionment, which, under the doctrine of prior appropriation, precluded Arizona from developing the project. The Supreme Court rejected California s arguments, enjoined the Secretary from delivering water outside the framework of apportionments defined by the law, and mandated the preparation of annual reports documenting the consumptive use of water in the three lower basin states. In 1979, the Supreme Court issued a Supplemental Decree which addressed present perfected rights (PPRs) referred to in the Colo- 14 Imperial Irrigation District

17 Colorado River Water Delivery www. >> For Colorado River Water Delivery Agreement and Related Agreements to which the Federal Government and California are Signatories: rado River Compact and in the Boulder Canyon Project Act. These rights are entitlements essentially established under state law, and have priority over later contract entitlements. On March 27, 2006, the Supreme Court issued a Consolidated Decree to provide a single reference to the provisions of the original 1964 decrees and several subsequent decrees (1966, 1979, 1984, and 2000) that stemmed from the original ruling. This decree also reflects the settlements of the federal reserved water rights claim for the Fort Yuma Indian Reservation. Colorado River Basin Project Act (1968): In 1968, Congress authorized construction of a number of water development projects in both the upper and lower basins, including the CAP. The act made the priority of the CAP water supply subordinate to California s apportionment in times of shortage, and directed the Secretary of the Interior to prepare, in consultation with the Colorado River Basin states, long-range operating criteria for the Colorado River reservoir system. Imperial Dam, gateway to the All-American Canal San Diego County Water Authority (Serves 23 water agencies in San Diego County) California Colorado River Contractors 2010 Annual Water Report 15

18 Quantification Settlement Agreement (2003): With substantial completion of the CAP infrastructure in 1994, creation of the Arizona Water Banking Authority in 1965, and growth of Las Vegas in the 1990s and 2000s, California experienced increasing pressure to live within its rights under the Law of the River. On October 10, 2003, after years of negotiation among Colorado River Compact States and affected California water delivery agencies, the QSA and related agreements and documents were signed by the Secretary of the Interior, IID, CVWD, MWD, and SDCWA and/or other affected parties. The QSA quantifies California s Priority 3a apportionment for a period of 35 to 75 years (2003 through 2037, or 2077) between IID and CVWD, with provisions for transfer of water involving IID, CVWD, MWD and SDCWA. In general, the terms of the QSA define allocations for consumptive use of Colorado River water by IID, CVWD and MWD that will enable California to stay within its basic annual apportionment, of 4.4 MAF plus not less than half of any declared surplus. As such, the QSA lays out Colorado River Use water budgets for IID, CVWD and MWD. IID 4.4 Million AF CVWD PVID MWD QSA Colorado River Use Annual Apportionment Cap for Ag Consumptive Use (Excluding Transfers and Exchanges) User Apportionment (AF) Imperial Irrigation District 3,100,000 Metropolitan Water District* 550,000 Palo Verde Irrigation District & Yuma Project* 420,000 Coachella Valley Water District 330,000 Total 4,400,000 *PVID & Yuma Project did not agree to a cap; value represents a contractual obligation by MWD to assume responsibility for any overages or be credited with any volume below this value. 16 Imperial Irrigation District

19 Water Policy Interim Water Supply Policy In September 2009, the IID Board of Directors adopted an IWSP to designate up to 25,000 AF of water annually to supply new non-agricultural projects until such time as IID adopts further policies in conjunction with the development of its Integrated Water Resources Management Plan (IWRMP). Funds generated by IWSP fees will be used to support the IWRMP or related IID water supply projects to create new supplies, implement conservation opportunities or reclaim drainage flows, while minimizing negative impacts to its current water users. IWSP key objectives are to provide: A reliable water supply for new non-agricultural projects Certainty needed to complete water supply assessments/verifications required by state law Flexibility for developers to provide some or all of the water supply by paying for and implementing some means of providing water in a manner approved by IID (conservation, water storage, recycling projects, etc,) other than from IID supply A water supply to support economic growth Funding for IID s IRWM Plan or similar projects that will increase the reliability and flexibility of the district s water supply needed by MCI users. Depending on the nature, complexity and water demands of the proposed project, new projects may be charged an annual Water Supply Development Fee (see chart) that will be used solely to assist in funding new water supply projects. All industrial use projects shall be subject to the fee, while new municipal and mixed-use projects shall be subject to the fee if the projects water demands exceed certain District-wide average per capita use standards. The applicability of the fee to mixed-use projects will be determined by IID on a case-bycase basis, depending on the proportion of types of land uses and the water demand proposed for each project. aspx?documentid=269 Interim Water Supply Policy 2010 Annual Non-Agricultural Water Supply Development Fee Annual Demand (AF) Development Fee $ $ $ $546 Fee schedule applies to contracts only and will either be adjusted annually by the gross domestic product implicit price deflator over the prior year, or otherwise updated periodically to reflect evolving replacement project costs and actual industrial water supply activity Equitable Distribution Plan The EDP is designed to regulate agricultural water usage to ensure IID stays within its Colorado River water allotment when demand exceeds supply. Individual farm unit used as basis for apportionment of water Straight-line method used for apportionment of water Internal water exchange allows users to move water between users MCI has priority and is given its historical usage Should MCI exceed this amount, a fee will be imposed 2010 Annual Water Report 17

20 Quantification Settlement Agreement The QSA and related agreements were negotiated to resolve complex water supply issues confronting California and other Colorado River water users for a period of 35 to 75 years ( , 2077). Agreements among IID, SDCWA, CVWD, MWD, and the federal government are formalized by the QSA and related agreements. These contracts identify conserved water volumes, transfer schedules, and price and payment terms. As a requirement of the QSA, IID adopted water transfer mitigation strategies, detailed in its environmental compliance documents. The strategies are designed to mitigate potential impacts to biological resources of the Salton Sea and the IID s drains. Water for transfer from the IID, according to the QSA and related agreements, is to be generated through fallowing programs ( ), efficiency conservation from improvements in IID s delivery system (2008 on), and on-farm irrigation practices. IID Receives $50 Million In October 2010, SDCWA transferred $50 million to IID via bank wire. The funds were obtained by SD- CWA through the issuance of a tax-exempt bond with proceeds to be used by IID to pay for capital QSA expenses related to the conservation of water. IID was assisted in securing this payment by its Chief Financial Officer, General Counsel, and outside bond counsel who helped effectuate the deal according to terms agreed to by both parties in the negotiated settlement. Efficiency Conservation Definite Plan The Efficiency Conservation Definite Plan (Definite Plan), which was finalized in 2007, provides a roadmap for conserving water while providing flexible, reliable service to growers. The Definite Plan recommends a mix of on-farm and system projects to best meet IID s water transfer obligations set forth in the QSA. Near-term actions outlined by the Definite Plan include implementation of the Main Canal Seepage Interception project and planning of other conservation projects. www. QSA General Information >> For information about the QSA, see the QSA Annual Implementation Report covering specific details about water conservation and the transfer project: >> For QSA-related documents and general information: 18 Imperial Irrigation District

21 Efficiency Conservation Program By 2026, IID must conserve and transfer an additional 303,000 AFY (for a total of 408,000 AFY), more than one out of every 10 AF of water historically diverted from the Colorado River each year. Initial efficiency conservation is relatively small: 4,000 AF were conserved and transferred in Seepage Interception Pump Main Canal Seepage Interception: This project provides cost-effective water conservation and accommodates staged implementation to meet the IID system efficiency conservation ramp-up schedule (see chart on next page) while other system and on-farm efficiency conservation projects are being finalized. IID completed major construction on all 22 seepage interception sites by April The IID QSA Water Transfer Schedule requires that 12,000 AF be conserved by efficiency conservation in IID was only able to create 6,809 AF of the required 12,000 AF by efficiency conservation due to Main Canal Seepage Interception system pump outage problems; the balance was delivered from IID s Intentionally Created Surplus (ICS) balance as early Inadvertent Overrun payback. IID anticipates the project will generate up to 41,000 AFY in subsequent years. System Conservation Program: The SCP is an integrated package of system improvements to existing infrastructure along with construction of new facilities. The SCP is designed to conserve water through targeted spill reductions and changes to water delivery operations that are required to achieve On-Farm Conservation Program goals. The purpose of the SCP is to reduce operational spill from IID laterals. Water conservation from efficiency improvements are required to fulfill water transfer obligations under the QSA. The SCP consists of major systemwide infrastructure construction, expansion of automation and remote monitoring (SCADA), and overhauling IID water management. The SCP is a robust and technically-sound blueprint for conserving transferable water within the revenue limits of the QSA (refer to the Definite Plan link on page 18 for a complete discussion of the interdisciplinary expert evaluation of alternatives and recommendations). SCP Phases: Phase 1a SCADA, Communications Phase 1b Reservoirs & Inter-Ties Phase 2 Mid-Valley Collector System SCADA Upgrades Communication Upgrades Install Automated Lateral Headings, Spill Monitoring, & Delivery Measurement Zanjero Laptops Mid-Lateral Reservoirs Canal Inter-ties Gravity & Pumped Reservoirs Rose Canal Reservoir & Canal Upgrades Rose-Moorehead Reservoir, Pipeline, & Canal Westside Main Canal Reservoirs Sperber Reservoir Upgrades 2010 Annual Water Report 19

22 IID QSA Water Transfer Schedule ( ) see QSA CRWDA Exhibit B Thousands of Acre Feet Salton Sea Mitigation Fallowing On-Farm Fallowing On-Farm Efficiency IID System Efficiency SCP implementation is organized around three major phases, see figure on page 19. The primary objective of this phased approach is to ensure funding is available, QSA issues are resolved, and there is a need for additional projects. Within each phase, individual projects are organized into multiple bid packages. SCP bid packages are structured around geographical areas in the IID Imperial Unit and sized to provide opportunities for large and small construction firms to bid on the work. IID was negotiating the SCP contract in late Phase 1a will automate all East Highline headings and as many Westside Main headings as funding permits. Phase 1a includes communication system and SCADA upgrades, installation of delivery measurement devices and heading gates, spill monitoring, and laptops for zanjeros. 20 Imperial Irrigation District

23 Fallowing for Conservation Through the QSA, IID agreed to a 15-year fallowing program (2003 through 2017) to mitigate potential impacts to the Salton Sea resulting from water transferred out of Imperial Valley. Through this program, landowners and/or lessees fallow fields to help IID meet IID/SDCWA water transfer, Salton Sea mitigation, and if needed, Colorado River overrun payback obligations. Each year IID publicly solicits volunteers to fallow fields in return for payment for conserved water. The price offered per AF of conserved water is set annually by the IID Board of Directors. Applications are processed for eligibility and water delivery records are analyzed to determine contract values. Individual field participation in the fallowing program is limited to two of every four years. IID takes actions to ensure that no water is delivered to any field participating in the Fallowing Program. In most cases, this involves locking the delivery gate or making alternative accommodations to physically prevent water from reaching the field. IID also changes system codes for fallowed fields, which prevents water order processing. In 2010, IID replaced quarterly field visits with satellite imagery analysis and GIS verification to ensure that fallow fields are not being irrigated. IID Fallowing Program www. >> For Fallowing Program details: Fallowing Program Details * 16,651 ac $6.9 Million to Participating Land Owners Fields 90,981 AF * 17,854 ac $7.9 Million to Participating Land Owners Fields 99,360 AF ,779 ac 66,406 AF $5.4 Million to Participating Land Owners Fields ,172 ac $6.2 Million to Participating Land Owners Fields 101,098 AF ,984 ac $5.3 Million to Participating Land Owners Fields 96,395 AF ,676 ac 69,764 AF $3.2 Million to Participating Land Owners Fields ,127 ac 67,273 AF $3.4 Million to Participating Land Owners Fields ,764 ac 38,641 AF $1.8 Million to Participating Land Owners - 69 Fields * Includes 1 and 2 year programs Conserved Acre-Feet (at farm) Fallow Acres 2010 Annual Water Report 21

24 Burrowing Owl protected by the Burrowing Owl Avoidance Program Water Transfer Mitigation Program Burrowing Owl Burrow Avoidance Program IID continues to implement the Burrowing Owl Burrow Avoidance Program, a part of mitigation measures required under the QSA water transfer. A Joint Powers Authority (JPA) provides the funding for these and other QSA water transfer mitigation measures. This program preserves habitat for the Imperial Valley burrowing owl population, helping to prevent the state from adding the burrowing owl to its Endangered Species Act list. In 2010, 7,172 potential owl burrows were identified with flagged stakes prior to maintenance activity on IID drains, canals, and laterals. During maintenance activity, the flagged burrow markings allow IID equipment operators to avoid burrow sites, thus preserving burrowing owl nesting habitats. IID s semiannual training program helps IID Water Department O&M staff and the HCP implementation team refine and improve mitigation measures for the burrowing owl and other species that nest in IID drains, canals, and laterals. As part of the Water Transfer Mitigation Program, IID has also implemented an artificial burrow program. Under this program, artificial burrows are constructed to provide additional nesting habitat for the burrowing owl. The first burrows were installed at the managed marsh complex (see next page) in early 2010, and one burrow was used by owls to raise young in the 2010 nesting season. Partners involved in the artificial burrow program include Sonny Bono National Wildlife Refuge, California Department of Fish and Game (CDFG) and a local environmental consulting firm. 22 Imperial Irrigation District

25 Managed Marsh nursery. Vertebrate, invertebrate and water quality Phase I of the managed marsh complex, constructed in late 2009 to provide mitigation for IID s Management Plan for the marsh. IID is continu- sampling were expanded as part of the Adaptive O&M activities and other impacts of the water ing with the implementation of an invasive species transfer, continues to gain functional habitat value management plan at the site in an effort to control as the vegetation matures. The marsh complex tamarisk and other undesirable vegetation. consists of 20 individual wetland cells that total approximately 365 acres of aquatic habitat. The The managed marsh is located at the intersection hydrologic regime and vegetation within each cell of SR 111 and Hazard Road, approximately 5 miles provide a variety of habitats including xeric grass/ north of Calipatria, California. The managed marsh shrub areas for small mammals, dense emergent complex is funded by a JPA; contributing members wetland vegetation for marsh birds, and open water pools that provide habitat for waterfowl. In the public for visits, and tours can be arranged by call- include IID, SDCWA, and CVWD. It is open to the spring of 2010, black-necked stilts, killdeer and ing IID at American avocets nested throughout the marsh and produced young. In an ongoing effort to manage and improve the habitat at the site, meandering channels Managed Marsh were excavated into two of the westernmost cells to mimic drain channel www. >> For managed marsh updates: habitat. These channels, constructed by a local agricultural service provider, are planted with willows from a local Managed Marsh, located north of Calipatria, CA 2010 Annual Water Report 23

26 Salton Sea Ecosystem The Salton Sea is a saline lake; in 2010, it had total dissolved solids of approximately 51,000 ppm (mg/l) 47 percent greater than that of ocean water. The sea is California s largest (surface area) lake and has been famous for its sport fishing and other recreational uses. It is a federally designated repository to receive and store agricultural, surface, and subsurface drainage waters from the Imperial and Coachella valleys. The Salton Sea water surface elevation was about 231 feet below mean sea level in Salton Sea stores agricultural, surface, and subsurface drainage waters Wildlife and aquatic species, which are dependent upon habitat created by the discharge of agricultural return flows, are threatened by the increasing salinity of the sea, as salts in the water are concentrated through evaporation. The sea s importance to wildlife has grown because about 95 percent of California s wetlands in other areas have disappeared through changes in land use. The Salton Sea ecosystem, including the Sonny Bono Salton Sea National Wildlife Refuge and adjacent agricultural lands, is considered a critical link on the International Pacific Flyway for migratory birds. To reduce QSA s environmental impact, the State Water Resources Control Board requires IID to provide a defined freshwater inflow for mitigation from 2003 through www. Salton Sea >> SDSU Center for Inland Waters - Salton Basin - Colorado Delta Mothersite: >> Salton Sea Authority: 24 Imperial Irrigation District

27 Imperial Irrigation District Facts & Figures 2010 Annual Water Report 25

28 2010 IID Use (Consumptive Use Volumes in AF at Imperial Dam) 3.1 Million AF Misc. Present Perfected Rights 11,500 IID/MWD Transfer (1988 Agreement) 105,000 IID/SDCWA Transfer 70,000 CVWD Transfer 12,000 IID/SDCWA Transfer Salton Sea Mitigation 33,736 Inadvertent Overrun Payback 0 Intentionally Created Surplus 0 AAC Lining 67,700 IID Water Users 1 2,545,593 IID Storage 2 46,546 Total 2,892,075 Underrun Reported by USBR 207,925 IID Maximum Consumptive Use 3,100,000 Source: 2010 IID Water Transfer Accounting 1) Reported IID Consumptive Use from Colo. River by USBR (final decree accounting published May 2011), adjusted for 5,104 AF pumped from the LCRWSP and includes 526 AF delivered to Coachella Canal heading for groundwater storage. 2) Storage in Salton Sea for 2011 and one-half of 2012 mitigation obligation. 3,500,000 IID Colorado River Water Use ,000,000 2,500,000 Acre-Feet 2,000,000 1,500,000 1,000, , Water Use (AF) Water Conserved for Transfer (AF) 26 Imperial Irrigation District

29 40,000 IID Service Population Area Population in IID s & Water Imperial Sales to Unit Cities versus Water Sales to Cities ,000 35, , ,000 30, ,000 25, , ,000 Acre-Feet 20,000 15,000 10, , , ,000 75,000 Population 5,000 50,000 25, Water Sold to Cities IID Service Area Population Populations of Cities Unincoporated Cities: Brawley, Calexico, Calipatria, El Centro, Heber, Holtville, Imperial, Niland, Seeley, Westmorland 0 3,000,000 2,500,000 2,000,000 Water Delivered versus Rainfall Acre-Feet 1,500,000 1,000, , Inches Delivered to Users (AF) IID Headquarters (in) 2010 Annual Water Report 27

30 2010 Inventory of Areas Receiving Water ACCOUNT SUMMARY Number of Farm Accounts 6,101 6,201 6,353 Number of Owner-Operated Farm Accounts 2,412 40% 2,491 40% 2,423 38% Number of Tenant-Operated Farm Accounts 3,689 60% 3,710 60% 3,930 62% Average Acreage of Farm Account SUMMARY OF AREA SERVED Field Crops 351, , ,208 Garden Crops 95,579 94, ,354 Permanent Crops 20,991 19,758 19,753 TOTAL ACRES OF CROPS 468, , ,315 Total Multiple Cropped Acres 36,898 63, ,718 TOTAL NET ACRES IN CROPS 431, , ,597 Area Being Reclaimed: Leached NET AREA IRRIGATED 431, , ,717 IID Fallowing Program (Avg. of two mid-year 17,253 15,317 14,476 periods) Area Farmable But Not Farmed During Year 25,064 26,428 28,525 (Fallowed land) TOTAL AREA FARMABLE 474, , ,718 Area Of Farms In Homes, Feed Lots, Corrals, Crop Processing Facilities, Experimental Farms, and Industrial Areas 16,139 16,723 17,947 Area In Cities, Towns, Airports, Cemeteries, 29,995 29,836 29,833 Fairgrounds, Golf Courses, Recreational, Parks, Lakes, and Rural Schools TOTAL AREA RECEIVING WATER 520, , ,498 Area In Drains, Canals, Reservoirs, Rivers, Railroads, and Roads Area Below -230 Salton Sea Reserve Boundary & Area Covered By Salton Sea, Less Area Receiving Water 74,735 74,547 74,511 40,150 40,150 40,150 Area in Imperial Unit Not Entitled to Water 63,933 63,933 63,933 Undeveloped Area of Imperial, West Mesa, 277, , ,629 East Mesa, and Pilot Knob Units TOTAL ACREAGE INCLUDED - ALL UNITS 976, , ,721 Acreage within District Boundaries That Is Not Included in District Water Right TOTAL GROSS ACREAGE WITHIN DISTRICT BOUNDARIES 84,916 84,916 84,916 1,061,637 1,061,637 1,061, Imperial Irrigation District

31 CROP SURVEY 2010 Inventory of Areas Receiving Water ACRES GARDEN CROPS ALOE VERA ARTICHOKE ARTICHOKE (SEED) BEANS BLACKEYED PEAS BROCCOLI 11,072 10,917 11,519 BROCCOLI (SEED) CABBAGE 1, ,235 CABBAGE, CHINESE CARROTS 12,503 14,187 14,962 CAULIFLOWER 2,455 3,461 2,564 CELERY CELERY (SEED) CILANTRO COLLARDS CORN, SWEET 8,800 5,978 6,285 CUCUMBERS EGGPLANT ENDIVE FLOWERS GARBANZO BEANS HERBS, MIXED HERBS, MIXED (SEED) KALE LETTUCE 13,046 15,675 17,051 LETTUCE, BUTTER LETTUCE, CHINESE LETTUCE, GREEN LETTUCE, RED LETTUCE, MIXED 8,903 7,695 9,430 LETTUCE, ROMAINE 5,031 5,866 4,231 MELONS CANTALOUPES, FALL CANTALOUPES, SPRING 6,626 5,631 5,948 HONEYDEW, SPRING MIXED, FALL MIXED, SPRING WATERMELONS 1, ,231 MUSTARD MUSTARD (SEED) OKRA ONIONS 8,366 9,813 10,223 ONIONS (SEED) 1,535 1,197 1,172 PARSLEY PARSNIPS PEAS PEPPERS, BELL POTATOES 1,347 1,432 1,938 RADISHES RAPINI 1,571 1,652 1,789 ROCKETT SPINACH 4,010 2,362 2,684 SQUASH SWEET BASIL SWISS CHARD THYME TOMATOES, FALL TOMATOES, SPRING TURNIPS VEGETABLES, MIXED 2,406 2,312 2,421 TOTAL GARDEN CROPS 95,579 94, ,354 ACRES FIELD CROPS ALFALFA, FLAT 82,708 74,971 65,577 ALFALFA, ROW 34,298 32,467 31,967 ALFALFA (SEED) 23,269 32,325 30,123 ALICIA GRASS BAMBOO BARLEY BERMUDA GRASS 28,132 28,461 29,737 BERMUDA GRASS (SEED) 25,968 26,291 27,450 CORN, FIELD 1,266 1,077 2,200 CORN, SILAGE COTTON FLAX GRASS, MIXED 338 1, KLIEN GRASS 12,415 14,016 14,889 OATS 1,491 2,386 2,395 RAPESEED RYE GRASS 2,342 2,490 1,938 SAFFLOWER SESBANIA ,587 SORGHUM GRAIN 650 1,973 1,310 SORGHUM SILAGE SOY BEANS SPIRULINA ALGAE SUDAN GRASS 52,807 32,670 66,513 SUDAN GRASS (SEED) ,615 SUGAR BEETS 25,188 18,022 23,773 SUGARCANE 594 1,131 1,184 TRITICALE GRAIN WHEAT 57, , ,050 TOTAL FIELD CROPS 351, , ,208 ACRES PERMANENT CROPS ASPARAGUS CITRUS GRAPEFRUIT 468 1,221 1,239 LEMONS 1,596 3,028 2,863 LIMES MIXED 4, ,211 ORANGES TANGERINES 605 1, DATES DUCK PONDS 10,307 10,309 9,864 EUCALYPTUS FIGS FISH FARMS 1,161 1, FRUIT, MIXED GRAPES GUAVA MANGOS NURSERY ORNAMENTAL TREES PALMS PASTURE, PERMANENT PEACHES PECANS POMEGRANATES TOTAL PERMANENT CROPS 20,991 19,758 19,753 TOTAL ACRES OF CROPS 468, , , Annual Water Report 29

32 2010 Water Overview Total Customers (2010 Farm Accounts) 6,101 Owner Operated 2,412 Tenant Operated 3,689 Schedule 1 General Agriculture Water Rate $19/AF Gross Area 1,061,637 AC Farmable Area 474,140 AC Net Irrigated Area (includes leached areas) 431,823 AC IID Fallowing Program (QSA & IID/SDCWA Transfer) 17,253 AC Water Received for IID Use (AAC Station 60) 2,545,593 AF Miles of Canals (AAC, Mains, Laterals) 1,668 Miles of Drains (AAC, Divisions, Drainage) 1, Economic Impact of Imperial Valley Agriculture Vegetable and Melon Crops $809,126,000 Field Crops $360,139,000 Livestock $321,022,000 Fruit and Nut Crops $51,294,000 Seed and Nursery Crops $52,952,000 Apiary (Honey, Wax, Pollination) $4,001,000 TOTAL $1,598,534,000 Source: Imperial County Agricultural Crop & Livestock Report IID Top Twelve Crops by Acres Alfalfa 140,275 Wheat 57,464 Bermuda Grass 54,100 Sudan Grass 53,117 Lettuce 27,184 Sugar beets 25,188 Carrots 12,503 Klien Grass 12,415 Broccoli 11,212 Duck Ponds 10,307 Corn, Sweet 8,800 Onions 8,366 TOTAL 420,931 Source: IID Inventory of Areas Receiving Water Crop Survey 30 Imperial Irrigation District

33 Imperial County Ag Production Values 2006 $1,365,368, $1,369,147, $1,684,522, $1,452,970, $1,598,534,000 Source: Imperial County Agricultural Crop & Livestock Report 2010 IID Water Delivered in Acre-Feet ,506, ,475, ,513, ,341, ,327,051 Source: Annual Delivered to Users Report 2010 IID Water Rate Schedule Agricultural Water (Schedule No. 1- General Agriculture) Calendar year $19/AF January 1, $20/AF Municipal Water (Schedule No. 14 Municipal and Miscellaneous Services $68/AF Pipe Service (Schedule No. 3 Pipe and Small Parcel Service) Tier 1 - $250/acct/yr Tier 2 - $100/ac/yr Conserved Water (Schedule No Water delivered outside IID Boundary, inside Imperial County) Calendar year $477.38/AF Annual Water Availability Charge - $4/gross acre 2010 Annual Water Report 31

34 ACRONYMS AAC AC AF AFY AWM BMP Cal EMA Caltrans CAP CDFG CDWR Compact CRWDA CVWD Definite Plan EDP FEMA GIS GPS HCP ICS IID IRWM Plan IWRMP JPA LCRWSP MAF MCI MWD O&M PPR PVID QSA SCADA SCP SDCWA SDSU SR TMDL USBR WIS All-American Canal Acre Acre-feet Acre-feet per year Agricultural Water Management Best Management Practices California Emergency Management Agency California Department of Transportation Central Arizona Project California Department of Fish and Game California Department of Water Resources Colorado River Compact Colorado River Water Delivery Agreement Coachella Valley Water District Efficiency Conservation Definite Plan Equitable Distribution Plan Federal Emergency Management Agency Geographic Information System Global Positioning System Habitat Conservation Plan Intentionally Created Surplus Imperial Irrigation District Integrated Regional Water Management Plan Integrated Water Resources Management Plan Joint Powers Authority Lower Colorado River Water Supply Project Million Acre-Feet Municipal, Commercial, and Industrial Metropolitan Water District of Southern California Operations and Maintenance Present Perfected Right Palo Verde Irrigation District Quantification Settlement Agreement Supervisory Control and Data Acquisition System Conservation Program San Diego County Water Authority San Diego State University State Route Total Maximum Daily Load US Bureau of Reclamation Water Information System 32 Imperial Irrigation District

35 IMPERIAL IRRIGATION DISTRICT General Information Organized in 1911 Entered energy business in 1936 Consumer-owned irrigation district and energy utility Largest irrigation district in the nation based on water volume World premier gravity flow water delivery system 97 percent of transported water used for agriculture Governed by 5-member board elected-at-large by public Approximately 1,400 employees Helpful Websites Order Water East Barioni Boulevard Post Office Box 937 Imperial, CA (760) Local Entity Board of Directors Division 1 - Matt Dessert USBR California Water Use Report Division 2 - John Pierre Menveille Division 3 - James C. Hanks Fallowing Programs Division 4 - Stella Mendoza Division 5 - Anthony Sanchez Canal Cut-Out Schedules Executive Officers Drain Cleaning Schedule Maintenance Schedule General Manager: Brian Brady Assistant to the General Manager: Kevin Kelley General Counsel: Jeff Garber Public Information Department Water Conservation Advisory Board (760) Water Conservation Implementation Water Bill Inquiries (760) Vegetation Management Schedule Internet Address A special thank you to Amy Loper for her photo contributions Annual Water Report 33

36 34 Imperial Irrigation District IID A century of service.