1 / 44

Castle Pines North Metropolitan District

Castle Pines North Metropolitan District. Integrated Water Resources Plan Community Meeting No. 1 November 7, 2005. Agenda. Introductions What is the Integrated Water Resources Plan? Castle Pines North's Existing Water Supply and Demands The IWRP Process Potential Supply Options

barbra
Download Presentation

Castle Pines North Metropolitan District

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Castle Pines North Metropolitan District Integrated Water Resources Plan Community Meeting No. 1 November 7, 2005

  2. Agenda • Introductions • What is the Integrated Water Resources Plan? • Castle Pines North's Existing Water Supply and Demands • The IWRP Process • Potential Supply Options • Upcoming Project Activities and Community Meetings • Questions and Comments

  3. 1. Introductions

  4. Background on CDM • A national engineering consulting firm • 3,200 employees with 140 in Denver • focus on water resources engineering • Recently completed Integrated Water Supply Plans for: • Colorado Statewide Water Supply Initiative • San Diego, Los Angeles, Santa Fe, San Antonio

  5. Santa ClaraValley WD IRP MetropolitanWater District IRP City ofSan Diego IRP Brazos River Authority IRP CDM Recent Integrated Water Resources Planning South Platte Decision Support System ColoradoStatewide Water Supply Initiative Northern NM Regional Groundwater Model City ofSanta Fe IRP City ofLos Angeles IRP AustinWatershedMaster Plan BECC (El Paso)Bi-National Water Plan San AntonioWatershed Plan

  6. CDM Recent Water Demand and Conservation Studies Santa ClaraConservationEvaluation State of ColoradoSWSI Demand Forecast Las Vegas Demand & Conservation Study MWD Demand Forecast Santa Fe Demand Forecast Albuquerque Demand &Conservation Study San DiegoDemand Forecast & Conservation Phoenix Demand & Conservation Evaluation Kelly AFB Demand Forecast El Paso Demand Forecast

  7. 2. What is the Integrated Water Resources Plan?

  8. Integrated Water Resources Tasks • Evaluate past, current, and future water demand • Evaluate water conservation strategies • Evaluate long-term sustainability of the District's existing groundwater supply using a groundwater model • Evaluate other water supply options and find the optimum "grouping/portfolio" of options that best meets the needs of the community

  9. Critical Tasks for Success • Assess current and future water demands • Evaluate potential additional conservation measures • Evaluate sustainability of existing groundwater supply • Develop plan for efficient use of existing wells and groundwater • Use proven alternatives analysis methods • Evaluate potential sources of renewable water supply • Explore partnering opportunities • Develop a practical timetable for bringing on renewable water supplies • Implement a successful public outreach program

  10. Schedule 2 0 0 5 2 0 0 6 Sep Oct Nov Dec Jan Feb Mar Apr Task 1 – Future Water Demand Projections Task 2 – Water Conservation Strategies Task 3 – Groundwater Sustainability Analysis Task 4 – Prepare the Integrated Water Resources Plan Community Involvement Community Meeting Dates

  11. 3. Castle Pines North's Water Supplyand Current Demands

  12. Existing Supply • Groundwater is currently CPN's only source of water supply • CPN's existing groundwater supply is nonrenewable • Groundwater is not "running out" but it will cost more in the future if groundwater levels continue to decline • More wells, more energy needed to pump water at deeper levels, reduction in well yield, and higher maintenance costs

  13. Denver Basin Aquifers CPNMD Alluvial Dawson Arapahoe Laramie-Fox Hills Denver

  14. South North Castle Pines North Dawson Denver Denver Greeley Arapahoe L-FH South-North Cross-section through CPNMD

  15. East West Castle Pines North Dawson Denver Arapahoe Laramie-Fox Hills West-East Cross-section through CPNMD

  16. Next project step: complete groundwater analysis 2 0 0 5 2 0 0 6 Sep Oct Nov Dec Jan Feb Mar Apr Task 1 – Future Water Demand Projections Task 2 – Water Conservation Strategies Task 3 – Groundwater Sustainability Analysis Task 4 – Prepare the Integrated Water Resources Plan Community Involvement Community Meeting Dates

  17. 400 350 300 250 200 Acre-ft 150 100 50 0 Jan-99 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04 CPN Monthly Water Demands Summer Demands > 6x Winter Demands

  18. Historic and Projected CPNMD Water Demands

  19. Current CPNMD Water Demands by Customer Type Residential use assumes watering every 3 days Total 2005 Demand = 1,897 acre-feet

  20. Breakdown of Typical Residential Water Use* *AWWA Residential End Use Study

  21. Regional Water Demands 2000 Per Capita Demands GPCD Counties

  22. The bottom line on our supply and demand • CPN is nearing buildout, so future demands can be predicted • Groundwater is not "running out" but it will cost more in the future • Regional issue affecting Douglas and Arapahoe Counties. • IWRP to plan for the future

  23. 4. The IWRP Process

  24. The IWRP Challenge • Existing situation • Non-renewable groundwater supplies • Declining water levels in area • Increasing costs to maintain yields • Make efficient use of groundwater resources • Drought reserve • Extend life of aquifers • Implement conjunctive use • Incorporate renewable supply options (surface water) • Competition of limited resources • Expensive • Difficult to go it alone

  25. Defining the Gap Demand Gap Water Demand Demand (AF/YR) Existing Reliable Supplies 2006 2046 Year

  26. Sustainability Definition – Context for Evaluating Water Supply Options • The CPNMD Board and Staff suggest sustainability be "no net long-term drawdown" in aquifer water levels • This means that aquifer water levels can fluctuate based on demands and availability of renewable supplies

  27. "Why" "How" Options Objectives PerformanceMeasures CompleteAlternatives Models/Tools PreferredStrategy Focus First On Objectives • Surface water storage • More conservation • Conjunctive use • Water treatment • Provide reliability • Cost effectiveness • Water Quality

  28. DefineObjectives Build SupplyAlternatives Develop EvaluationFramework Evaluate SupplyAlternatives • Establishes goals • Helps define criteria for which alternatives will be compared • Identify all feasible supply and demand-management options • Rank options & combine into alternatives • Identify stakeholders • Identify and incorporate "risk" into decision making • Evaluate partnering opportunities • Show trade-offs between alternatives • Identify common elements & phase-in • Develop implementation strategy Alternatives Development & Evaluation Process

  29. Objectives

  30. Conserv. Conserv. Conserv. Reuse Reuse Storage AgTransfers Reuse Projected Demand Surface water Storage Storage Ground-water Ground-water Ground-water Portfolio 1 Portfolio 2 Portfolio 3 The IWRP will build integrated alternatives Surfacewater Ground-water Storage Ag Transfers Reuse Conser- vation

  31. 5. Potential Supply Options

  32. Conservation: Current Measures • Water Restrictions • 2003 – began watering limited to every 3rd day. • Balances system demands and reduces peak day. • Water Rates • Historically a tiered system • 2004 – began budget water based on lot size and a 4-5 tiered block rate system based on usage • Rebates for Retrofits • Program began in 2003 • Public Education • Formal process began in 2003

  33. Castle Pines North Rebate Program *Source: CPN Website

  34. Conservation Potential • Indoor Conservation Potential • Limited - mostly for newer homes • Up to approx 100 AF/Yr for residential • Total Commercial use <5% of build-out demand • Residential Outdoor Conservation Potential • Rate structure & budget allocation provide incentives for efficiency • Rate structure can potentially be optimized for additional savings • Additional savings likely through permanent landscape changes • Open Space Irrigation Conservation Potential • Additional savings likely through permanent landscape changes

  35. Potential Sources of Renewable Supplies Colorado River Basin Transbasin deliveries from Upper Blue River to Upper South Platte with Combined Storage and Pipeline Lower South Platte Fallowing program and water rts acquisition, gravel pit storage and pipeline Rueter-Hess Reservoir Upper Arkansas River Water rts acquisition with storage and pipeline to Upper South Platte Drainage Upper Cherry Ck and Plum Ck Water rts acquisition with storage & pipeline Upper South Platte Basin Water rts acquisition with storage and pipeline Lower Arkansas River Basin Fallowing and water rts acquisition with storage and pipeline

  36. 400,000 110,000 N. PLATTE LARAMIE 1,530,000 YAMPA WHITE 560,000 SOUTH PLATTE COLORADO 510,000 GUNNISON 164,000 ARKANSAS DOLORES EAST SLOPE Irrigated Acres: 2,270,000 RIO GRANDE WEST SLOPE Irrigated Acres: 880,000 SAN JUAN 320,000 1,780,000 Year 2000 Statewide Flows and Irrigated Acres 310,000 4,500,000

  37. State of Colorado Year 2000 Agricultural, M&I and Self-supplied Industrial Water Demands East Slope West Slope

  38. SW Sources GW from recharge Non-renewable GW Recharge to GW Example of Combined Surface and Ground Water Use for CPNMD Future Demand SW SW SW Current Demand GW GW PRODUCTION GW GW Current Average Wet Year Dry Year CONDITIONS

  39. Storage: Chatfield, Rueter-Hess

  40. 6. Upcoming IWRP Project Activities and Community Meetings

  41. Schedule 2 0 0 5 2 0 0 6 Sep Oct Nov Dec Jan Feb Mar Apr Task 1 – Future Water Demand Projections Task 2 – Water Conservation Strategies Task 3 – Groundwater Sustainability Analysis Task 4 – Prepare the Integrated Water Resources Plan Community Involvement Community Meeting Dates

  42. Content & Objectives of Each Community Meeting • Meeting No. 1 – November 7, 2005 • Introduce IWRP • Overview of supply and demands • Meeting No. 2 – January 23, 2006 • Provide results of groundwater analysis • Present preliminary alternatives • Meeting No. 3 – March - April 2006 • Present IWRP • Discuss recommended alternatives

  43. For additional information or to provide comments: • Contact: • Castle Pines North Metro District • James McGrady, District Manager • 303-688-8550, ext. 11 • jmcgrady@cpnmd.org • Visit: • the CPNMD web site • http://www.cpnmd.org

  44. 7. Questions, Comments, Input?

More Related