John M. Stomp III, PE

Transcription

1 A Dynamic Simulation Model for Integrated Water Resources Management in Albuquerque, NM John M. Stomp III, PE Chief Operating Officer, Albuquerque Bernalillo County Water Utility Authority November 2013

2 Albuquerque s 1997 Water Resource Management Strategy Included: Programs already implemented Conservation Reuse for industry and irrigation Use of surface water (Colorado San Juan-Chama trans-basin diversion to Rio Grande) Potential future programs COLORADO NEW MEXICO Navajo Reservoir Aquifer storage and recovery (related to surface water treatment) Contaminated groundwater (industry contamination & brackish water aquifer development) Stormwater capture N Miles Diversions RIO BLANCO LITTLE NAVAJO RIVER RIO CHAMA NAVAJO RIVER 26 Miles of Tunnels Heron Lake Abiquiu Reser 2

3 Albuquerque s 1997 Water Resource Management Strategy Included: Water Demand (acre-feet/year) 300, , ,000 0 Non-Renewable Aquifer Drawdown Renewable ~100KAFY Surface Water Owned by City ~50KAFY Renewable Groundwater Year Reuse New sources 3

4 Motivation Water Resources Management Plan, October 2007: 13 Policies were articulated A. Update and Maintain a Water Budget 1. Interactive Model of the Water Budget 2. Annual Review of the Water Budget 3. Consistency of the Regional Water Budget

5 Background: Ground and Surface Water Resources Aquifer can no longer sustainably supply water at needed levels Additional sources and management are required San Juan-Chama Water Table Rio Grande Wells Aquifer 5

6 Albuquerque Ground-Water Levels Show Huge Declines Pumping Cone of Depression as of

7 Drinking Water Project Surface Water Diversion PASEO DEL NORTE Surface Water Distribution System Coronado Volcano Cliffs UNSER MONTANO COORS Water Treatment Plant College 98TH ST ATRISCO I-25 I-40 Don Burton North Diversion Channel LOUISIANA SAN ANTONIO Legend TIERRA PINTADA SEQUOIA CAMPBELL EDITH BLVD MONTGOMERY MENAUL SAN PEDRO Leyendecker Charles Wells Raw Water Pipeline Surface Water Transmission Line Existing Reservoir 110TH CENTRAL Rio Grande HERMOSA MARQUETTE ALVARADO ³ Miles

8 SJC DWP (1%) ,357 (21%) ,803 (40%) ,215 (38%) ,208 (41%) Full use, primary source or supply 8

9 Groundwater Storage and Water Levels - Recent trends with DWP 9

10 Demand Curve

11 Demand and Ground Water Use

12 Demand and Ground Water Use Surface Water Ideal Use

13 Demand and Ground Water Use Surface Water Likely Use Under Full Supply Minimum Ground Water Use

14 Demand and Ground Water Use Remaining Ground Water Surface Water Likely Use Under Full Supply Minimum Ground Water Use

15 Demand and Ground Water Use Remaining Ground Water Drought Minimum Ground Water Use

16 San Juan-Chama WTP Production 12

17 WRMS Conservation 200,000 Conservation Water Demand (acre feet/year) 150, ,000 50,000 Actual Reuse Surface Water Groundwater

18 Reuse strategies included: Reuse/raw water sources Industrial wastewater San Juan-Chama Municipal wastewater Contaminated groundwater Storm water Current projects and supply Industrial recycling ~1 KAFY North I-25 non-potable project ~ 3KAFY Southside effluent reuse ~2.4 KAFY 14

19 ASR Potential

20 Bear Canyon ASR 1,000 ac-ft successfully stored Submitted permit for full-scale operation in November 2012 Will be permitted for up to 3,000 ac-ft/yr 16

21 Large-Scale ASR New injection wells at Water Treatment Plant Design Analysis Report was just finalized Design underway OSE permit to be submitted by the end of

22 Webster Well No. 1 ASR Pilot Study 18

23 Why Dynamic Simulation? Complex interrelationships Supply / demand Uncertainty Hydrology Population Package in easy to use dashboard interface Quick answers without bogging down in details 19

24 Integrated Resource Planning Examine multiple options for current and future needs Asses the TOTAL impact of these options Determine range of both supply and demand projections Examine and address risk to supply Evaluate water supply alternatives for cost and other factors pipeline from Amarillo Answer critical questions - Should we continue purchasing Pre-1907 water rights? 20

25 Purpose of Model Evaluate potential need for and timing of additional supplies Evaluate sustainability of current and future supplies Potential additional conservation measures Consider effect of climate change on surface flows and demand How to use existing resources more efficiently Increase reuse Reduce evaporative losses - ASR Assist in short-term planning and report preparation Assist in San Juan-Chama and other accounting 21

26 Model Input Variables Demand Population Per capita water usage or change in usage (conservation) At varying level of detail: system-wide down to user class Supply Supplies used: current and potential new Priority of each supply Constraints on each supply: permits, hydrologic availability, etc. Hydrology and climate change parameters 22

27 The Model Interface Separate demand and supply modules Include pre-packaged scenarios for quick evaluation Allow user-defined scenarios 23

28 What the Model Simulates Demand Monthly demand by user class Wastewater availability Used for reuse and offsets Supply Priority-based allocation of supplies to meet demand Limited by permits, hydrology, etc. Water in storage, drought buffer 24

29 Climate Variability Implementation

30 Example Results 1 Assume slower population growth Less groundwater, but also less surface water Supplies Meeting Demand, Reference Run Supplies Meeting Demand, Current Run 200,000 Non Potable Project 200,000 Non Potable Project 180,000 Native Rio Grande, Direct Diversion New Storage (ASR and/or New Res) 180,000 Native Rio Grande, Direct Diversion New Storage (ASR and/or New Res) 160, ,000 Brackish Groundwater Wastewater Reuse Inter Basin Transfer Groundwater Non Potable Project Wastewater Reuse 160, ,000 Brackish Groundwater Wastewater Reuse Inter Basin Transfer Groundwater Acre Feet Per Year 120, ,000 80,000 DWP Groundwater Acre Feet Per Year 120, ,000 80,000 DWP Non Potable Project Wastewater Reuse Groundwater 60,000 60,000 40,000 DWP 40,000 DWP 20,000 20, Year Year 26

31 Example Results 2 Increase reuse in year 2030 Decreased groundwater, increased drought buffer Supplies Meeting Demand, Current Run Sustainability Summary Comparison Against Reference Acre Feet Per Year 200, , , , , ,000 80,000 60,000 40,000 20,000 Non Potable Project Native Rio Grande, Direct Diversion New Storage (ASR and/or New Res) Brackish Groundwater Wastewater Reuse Inter Basin Transfer Groundwater DWP Non Potable Project Wastewater Reuse Groundwater DWP Acre Feet Per Year 120, ,000 80,000 60,000 40,000 20,000 Plot Explanation: Solid lines are "current run." Dashed lines are "reference run" Consumptive Use: Outdoor Demand Consumptive Use: Reservoir Evap Available Return Flow Total Surface Water Rights Cumulative Change in Total Storage (Right Y Axis) Consumptive Use: Transit Loss Consumptive Use: ASR Loss Available Native Rights Total Consumptive Use, Loss, and Available Rights 200, , , , , , ,000 Cumulative Change in Total Storage (af) Year 0 600, Year 27

32 Annual Operating Plan Updates Input: hydrology and optional additional diversion limitations Output: plots and tables necessary for annual operating plan Sample results do not cite 28

33 Water Budget Historical & Projected Year Groundwater Surface Water (Drinking Water Project) Reuse Historical % 1% 2% % 21% 2% % 40% 2% % 38% 2% % 41% 3% Projected % 48% 2% % 54% 3% % 47% 3% % 53% 3% % 53% 3%

34 5-Year Planning Example 30

35 What is happening to the aquifer? DWP Online

36 Next Steps Add historic accounting module (currently underway) Consolidate historical records Adjust future projections to reflect observed conditions Add cost module (in planning stages) Allow cost-benefit analysis of demand/supply alternatives Scientific Task Force Peer Review (currently underway) 32

37 Questions? For more information contact: John M. Stomp III, PE Chief Operating Officer (505)