Coyote/Berryessa Creek Flood Protection Project

Transcription

1 CB Coyote/Berryessa Creek Flood Protection Project Fiscal Year 2017 and Fiscal Year 2018 Request: The project received $20 million in U.S. Army Corps of Engineers (USACE) work plan funding for Fiscal Year 2016, which is intended to fund the project through completion. As a result, there is currently no Fiscal Year 2017 nor Fiscal Year 2018 appropriation request. Project Benefit-to-Cost-Ratio (BCR): Approximately 3 to 1. Work to Be Performed with Funds: Widening channel to increase conveyance capacity from I-680 to Calaveras Blvd. Bank stabilization, bridge replacement, as well as installation of transition structures at existing bridge locations are also included. Anticipated Project Completion Date: December 31, 2017 Project Importance: This project will ensure flood protection from a 1-percent flood, preventing over $528 million in possible damage, and protect over 650 parcels of land from being inundated, including homes, schools and businesses. In addition, the project will help provide the BART Silicon Valley Milpitas Station with required protection from a 100-year flood event, prior to its opening in late Project Description: Berryessa Creek drainage basin covers 22 square miles. Proposed project includes channel widening and armoring, improved channel access roads, railroad trestle replacement, transitions structures at vehicle bridges, and floodwalls. Project Boundaries: Project extends from Calaveras Blvd. to Interstate 680 in the Cities of Milpitas and San Jose. Projected Flood Damage: The dollar value of flood damage from the 1 percent flood is estimated at $528 million in 2011 dollars (USACE 2014). Flooding History: Stormwater flooding that inundates streets and yards occurs on average at least once every four years. Overflow channel flooding also occurs along Upper Berryessa Creek on average of once every 10 to 20 years, which results in significant damage to homes, businesses, infrastructure, and automobiles. High rainfall events occurring in 1982, 1983, and 1998 caused extensive flooding and damage to areas along creeks in the cities of San Jose and Milpitas. Project Cost: $74.6 million (District: $54.0 million; Federal: $20.6 million). Demographics: Provides flood protection for residential property in Milpitas, and commercial and industrial property in Milpitas; and critical transportation facilities including the new Milpitas BART station. Status: In 2016, approximately 400 feet of channel construction between Montague Expressway and Highway 680 was completed. Construction activities will resume in March The remaining channel construction work and two railroad bridges are expected to be completed by December The Santa Clara Valley Water District (District) certified the project EIR in February In March 2016, the USACE received issuance of the required 401 Certification for the project from the Regional Water Quality Control Board. The District acquired all of the necessary right-of-way in June Design was completed and the construction contract was awarded in August Construction was authorized jointly for both Coyote and Berryessa creeks in the Water Resources Development Act of Funding History: An appropriation of $12,739,000 was requested in the FY 2016 Administration budget to complete construction. This number was later revised to $14,088,000. The project received $20,000,000 in the FY 2016 USACE workplan. Page 1 of 9

2 MILPITAS Coyote and Berryessa Creeks Flood Protection Project Element 2 - Berryessa Creek Calaveras Blvd to Highway 680 Escuela Pkwy Jacklin Rd AË TULARCITOS TULARCITOS Los Coches St S Milpitas Blvd S Hillview Dr %&p( Kennedy Dr LOS COCHES CREEK S Park Victoria Dr Evans Rd Calaveras Blvd S Temple Dr PIEDMONT CREEK Guadalupe Project Location Piedmont Rd Coyote PROJECT LIMITS FEMA Flooding 100 Year Flood Zone Calaveras Rd S Main St Yosemite Dr Yellowstone Ave UPRR Dempsey Rd UPRR Ames Ave S Abel St Landess Ave \2014_009\L_berryessaCIP_2014.mxd 8.5x11 2/26/2014 O Toole Ave S Main St Oakland Rd Capitol Ave Future Location of BART Station Montague Expy Trade Zone Blvd Approximate Scale Lundy Ave Lundy Ave BERRYESSA BERRYESSA CREEK CREEK Miles N Capitol Ave Fallingtree Dr Morrill Ave Camargo Dr Hostetter Rd Cropley Ave SIERRA SIERRA CREEK CREEK SAN JOSE Knights Bridge Rd CROSLEY CROSLEY CREEK CREEK Messina Dr Isadora Dr Berryessa Rd SWEIGERT CREEK Sierra Rd Old Piedmont Rd Page 2 of Santa Clara Valley Water District 03/2017

3 SH South San Francisco Bay Shoreline Study Fiscal Year 2017 Funding Need: Economic Impact Area 11 (EIA 11): $500,000 to complete Reach I of Planning, Engineering, Design (PED) ($450,000 funding need remains from $500,000 in FY17 President s budget) Economic Impact Areas 1-10 (EIAs 1-10): $50,000 to initiate next feasibility study phase Fiscal Year 2018 Funding Need: Economic Impact Area 11 (EIA 11): $100,000 to finalize remaining PED efforts and $15 million to start initial construction, a new start designation and to continue project design Economic Impact Areas 1-10 (EIAs 1-10) $300,000 to initiate next feasibility study phase Project Benefit-to-Cost-Ratio (BCR): EIA 11: 9.4 to 1 for High Sea Level Change EIA 1 to 10: TBD Work to Be Performed with Funds: In Fiscal Year 2017: EIA 11: Complete Reach I of PED EIAs 1-10: Initiate the next feasibility study phase In Fiscal Year 2018: EIA 11: Finalize remaining PED efforts and construction (e.g., execute project partnership agreement, construct levee and bench in Reach 1) and continue project design (e.g., design in Reaches 2 and 3 and Artesian Slough tidal gate) EIAs 1-10: Initiate next feasibility study phase Anticipated Project Completion Date: EIA 11 FY 2021, EIA 1-10 TBD. Project Importance: For all of Santa Clara County low-lying communities along the shoreline, this project will provide 1-percent tidal flood protection including consideration for future sea level rise to over 5,000 structures, roads, highways, parks, airports, sewage treatment plants, utility infrastructure, and the new Silicon Valley Advanced Water Purification Center. Project Goal: Provide protection from 1-percent tidal flooding including consideration for future sea level rise to urban areas adjacent to the South San Francisco Bay, restore up to 25 square miles of habitat, and provide public access and recreation. Project Description: Phase I (EIA 11) work will provide 1-percent tidal flood risk management for the urban area of north San Jose including the community of Alviso and the San Jose-Santa Clara Regional Wastewater Facility and ecosystem restoration of approximately 3,000 acres of former salt ponds. Preliminary planning study efforts are currently being conducted for EIAs 1-10 by the District to determine the next study phase effort. Project Boundaries: Santa Clara County s South San Francisco Bay Shoreline from Palo Alto to Milpitas. Projected Flood Damage: A 1-percent tidal flood event could cause $6.14 billion (Surviving the Storm, April 2015) in damages and affect 4,700 acres and more than 5,000 structures including roads, highways, parks, airports, sewage treatment plants, utility infrastructure, and the new Silicon Valley Advanced Water Purification Center. Page 3 of 9

4 Flooding History: (ROD) for the EIS on July 28, Project authorized for $177.2 million in Water Infrastructure Improvements for the Nation Act (WIIN) which was signed into law on December 16, Once start designation and appropriations received, construction can start as soon as Recent high tides occurred in 1973, 1983, 1998, 2003, 2005 and Project Cost: EIA 11: $174.1 million (District: $44 million; Coastal Conservancy: $59.8 million; Federal: $70.3 million) EIAs 1-10: $600,000 to initiate the study in a 50/50 cost share between federal and the local partners (District: $300,000; Federal: $300,000) EIA 1-10: USACE will hold a charette to identify next phase and appropriation needed for feasibility study to begin. Original study authorized in WRDA In September 2010, non-federal sponsors requested Corps USACE to reevaluate the project scope, focusing on the area with the highest economic impacts. District Board endorsed the new scope in March 2011 and the study was refocussed to EIA II. Demographics: Homes and businesses in low lying parts of Palo Alto, Mountain View, Sunnyvale, San Jose, and the community of Alviso are in danger of flooding by high tides. Area at risk also includes NASA/Ames Research Center and Silicon Valley s Golden Triangle, home to high-tech world leading businesses such as Cisco and Google. (Also Sunnyvale s wastewater facility) Funding History: FY 2016 USACE Corps work plan request included $3.3 million to initiate the design phase for EIA 11 in the Alviso Area ($3M) and initiate the Feasibility Study for Economic Impact Areas 1-10 ($300,000). The study received $3 million in the FY 2016 USACE Corps work plan for EIA 11. Status: EIA 11: Chiefs Report signed December 2015 by General Thomas P. Bostick. On March 22, 2016, the EIR was approved by the District Board. U.S. Army Corps of Engineers (Corps) issued its Record of Decision The District s Safe, Clean Water and Natural Flood Protection parcel tax includes $20 million for this project. South San Francisco Bay Shoreline Study: Alviso Ponds and Santa Clara County First Interim Feasibility Study R1 Status Report: Federal Projects for Santa Clara County, California, Fiscal Year 2017 x Santa Clara Valley Water District A22 EAST PALO ALTO 880 A23 A21 A20 A9 A6 A10 A1 PALO ALTO A2W 101 AB1 AB2 A2E A3W A5 A7 A15 A11 A13 A17 A18 A16 A12 S U N N Y VA L E WPCP A4 MOUNTAIN VIEW A14 A19 A8 SJ/SC J/SC J/S SJ/SC /SC WPCP WS WP CP PCP ALVISO A8S MOFFETT FIELD 237 SANTA CLARA LEGEND SUNNYVALE SAN JOSE Study Area Boundry Ponds Economic Impact Area II Counties 82 Landfills 1:65,000 NORTH Map coordinate system California State Plane Zone III, NAD83 Project Study Area boundary is approximate Page 4 of 9

5 Flooding in San Francisco Bay: Risks and Opportunities Figure Status Report: Federal Projects for Santa Clara County, California, Fiscal Year 2016 x Santa Clara Valley Water District Page 5 of Santa Clara Valley Water District 03/2017

6 UG Upper Guadalupe River Flood Protection Project Fiscal Year 2017 Funding Need: $1.2 million Fiscal Year 2018 Funding Need: $72 million Project Benefit-to-Cost-Ratio (BCR): 1.16 to 1 This is for the recommended 100-year bypass plan (locally preferred plan). Work to Be Performed with Funds: Fiscal Year 2017: Project design Fiscal Year 2018: Construction of Reaches 7 and 8 which includes the construction of a bypass channel, replacement of two vehicular bridges (Alma Avenue and Willow Street), and two railroad bridges in conjunction with the Peninsula Corridor Joint Powers Board. Anticipated Project Completion Date: June 2021 Project Importance: Central and south San Jose have a critical flooding problem. This project will ensure flood protection preventing $280 million in damages from a 1-percent flood and protect over 2,300 acres of land from being inundated, including 7,500 homes, schools and businesses. The project proposes to modify the Guadalupe River between Interstate 280 to Blossom Hill Road, to contain the computed 100-year frequency flood and prevent flood damages to surrounding neighborhoods. The proposed project would also provide access roads, which are needed to perform regular maintenance such as weed control, erosion repair, and debris removal. The objective of the project is to reduce flood damage and improve the ecological function of the upper Guadalupe River. Project Goal: To provide flood protection for 7,500 homes, schools and businesses in Santa Clara County and provide long-term environmental benefits for fish and wildlife habitat. Project Description: Project will provide over 5 miles of flood protection through channel widening, floodwalls, levees, bridge replacements, and planting of streamside vegetation. All proposed flood protection improvements include long-term environmental benefits for fish and wildlife habitat, and continuous creek side trail access. Project Boundaries: Project extends from Union Pacific Railroad downstream of Willow Street to Blossom Hill Road in the City of San Jose. Projected Flood Damage: The 100-year flood would inundate over 2,300 acres of land; cause $280 million in damages, and affect 7,500 homes, schools, businesses, and major freeways. Average annual damages are $23.5 million. Flooding History: Recent damaging flood events have occurred in 1982, 1983, 1986, 1995, and Project Cost: $368.7 million (District: $180.7 million; Federal: $188 million). Demographics: Provides flood protection for some of the oldest residential areas in the City of San Jose. Floodplain encompasses moderately dense residential and commercial areas. Status: Channel construction of Reach 12 is complete; Mitigation planting started in summer Construction of two vehicular bridges (Alma Avenue and Willow Street) and two railroad bridges located in Reaches 7 and 8 are expected to start in summer District requested U.S. Army Corps of Engineers to restudy Upper Guadalupe in Project authorized in Water Resources Development Act (WRDA) of 1999 and reauthorized in WRDA Funding History: An appropriation of $24 million was requested in FY 2016 to begin construction. The project did not receive funding in the FY 2016 workplan. Page 6 of 9

7 2017 Santa Clara Valley Water District 03/2017 Page 7 of 9

8 UP Upper Penitencia Creek Flood Protection Project Fiscal Year 2017 and Fiscal Year 2018 Funding Need: $100,000 to only provide for U.S. Army Corps of Engineers (USACE) review of District planning efforts. (Note: Implementation of Section 1126 of the Water Infrastructure Improvements for the Nation Act may be beneficial to this project as it would allow USACE to provide technical assistance for the feasibility study if the District contracts to pay the costs of such assistance.) Project Benefit-to-Cost-Ratio (BCR): to 1 per preliminary planning by USACE. Work to Be Performed with Funds: Review of documents and participation in planning. Anticipated Project Completion Date: Study to be completed spring Project Importance: This project will ensure flood protection preventing $455 million in damages from a 1-percent flood and protect over 5,000 homes, schools and businesses in Santa Clara County. Project Goal: To provide flood protection for over 5,000 properties (homes, schools, and businesses) in the cities of San Jose and Milpitas in Santa Clara County. The project also provides long-term environmental benefits for fish and wildlife. Project Description: Upper Penitencia Creek drains 24 square miles of northeastern Santa Clara Valley in the cities of San Jose and Milpitas, and unincorporated Santa Clara County. Proposed measures being evaluated include modified upstream floodwater detention/storage, enlarged channels, floodplains, levees, floodwalls, bypass channels, and fish passage improvements. Project Boundaries: Project extends 4.2 miles from the confluence with Coyote Creek to Dorel Drive in northeast San Jose. Projected Flood Damage: The 100-year flood would cause $455 million in damages (based on 2004 U.S. Army Corps of Engineers economic analysis) and affect over 5,000 properties (homes, schools, and businesses). Average annual damages are $30.5 million based on 2004 values. Flooding History: Flooding occurred in 1978, 1980, 1982, 1983, 1986, 1995 and Project Cost: $118.8 million (District: $68.8 million; Federal $50 million) (Estimate only). Demographics: Provides flood protection for residential, high-tech and commercial section of northeast San Jose as well as City of Milpitas. Status: A local planning study has been underway since spring USACE held a meeting on November 30, 2015, and field visit on December 8, 2015, with state and federal resource agencies to discuss the potential ecosystem restoration measures for the project. In 1982, the Natural Resources Conservation Service completed an economic feasibility study. In 1993, the District requested USACE to initiate a study. Funding History: An appropriation of $300,000 was requested in FY 2016 but did not receive funding in the FY 2016 workplan. Page 8 of 9

9 PIEDMONT CREEK MILPITAS Piedmont Rd Upper Penitencia Creek Flood Protection Project Coyote Creek to Dorel Drive Project Location Upper Penitecia Creek Coyote Landess Ave N Capitol Ave Morrill Ave Cropley Ave BERRYESSA CREEK Knights Bridge Rd Old Piedmont Rd Guadalupe ^_ FISH LADDER PROJECT LIMITS 1% FLOODING GISADMIN: \2013_023\L_upperPenCIP_revised.mxd 04/04/2013 N 13th St Lundy Ave COYOTE COYOTE CREEK CREEK Commercial St IÆ Fallingtree Dr UPRR Future Location of BART Station Flickinger Ave Sierra Rd Berryessa Rd Hostetter Rd %&p( Commodore Dr UPPER N King Rd SAN JOSE PENITENCIA PENITENCIA ^_ CREEK CREEK Mabury Ave. Diversion Dam Fish Ladder (October 1998) SIERRA CREEK Sierra Rd Penitencia Creek Rd N Jackson Ave S Capitol Ave Mc Kee Rd Kyle St Mabury Rd MIGUELITA MIGUELITA CREEK CREEK Noble Ave ^_ N White Rd Dorel Dr Noble Ave. Diversion Dam Fish Ladder (July 1999) Toyon Ave Kirk Ave Miles Approximate Scale E Hills Dr Page 9 of Santa Clara Valley Water District 03/2017