castle pines north metropolitan district integrated water resources plan community meeting no. 1...
TRANSCRIPT
Castle Pines North Metropolitan District
Integrated Water Resources Plan
Community Meeting No. 1
November 7, 2005
AgendaAgenda
1. Introductions
2. What is the Integrated Water Resources Plan?
3. Castle Pines North's Existing Water Supply and Demands
4.4. The IWRP Process The IWRP Process
5.5. Potential Supply OptionsPotential Supply Options
6. Upcoming Project Activities and Community Meetings
7. Questions and Comments
1. Introductions1. Introductions
Background on CDMBackground 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
CDM Recent Integrated Water Resources PlanningCDM Recent Integrated Water Resources Planning
Santa ClaraSanta ClaraValley WD IRPValley WD IRP
MetropolitanMetropolitanWater District IRPWater District IRP
City ofCity ofLos Angeles IRPLos Angeles IRP
City ofCity ofSan Diego IRPSan Diego IRP
ColoradoColoradoStatewide Water Statewide Water Supply InitiativeSupply Initiative
City ofCity ofSanta Fe IRPSanta Fe IRP
San AntonioSan AntonioWatershed PlanWatershed Plan
BECC (El Paso)BECC (El Paso)Bi-National Bi-National Water PlanWater Plan
Brazos River Brazos River Authority IRPAuthority IRP
AustinAustinWatershedWatershedMaster PlanMaster Plan
South Platte South Platte Decision Support Decision Support
SystemSystem
Northern NM Regional Northern NM Regional Groundwater ModelGroundwater Model
CDM Recent Water Demand and Conservation StudiesCDM Recent Water Demand and Conservation Studies
Santa ClaraSanta ClaraConservationConservation
EvaluationEvaluation
MWD Demand MWD Demand ForecastForecast
San DiegoSan DiegoDemand Forecast Demand Forecast & Conservation& Conservation
State of ColoradoState of ColoradoSWSI Demand SWSI Demand
ForecastForecast
Albuquerque Demand &Albuquerque Demand &Conservation StudyConservation StudyPhoenix Demand & Phoenix Demand &
Conservation Conservation EvaluationEvaluation
Las Vegas Demand & Las Vegas Demand & Conservation StudyConservation Study
El Paso Demand El Paso Demand ForecastForecast
Kelly AFBKelly AFBDemand ForecastDemand Forecast
Santa Fe Demand Santa Fe Demand ForecastForecast
2. What is the Integrated 2. What is the Integrated Water Resources Plan?Water Resources Plan?
Integrated Water Resources TasksIntegrated 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
Critical Tasks for SuccessCritical 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
ScheduleSchedule
Task 1 – Future Water Demand ProjectionsTask 1 – Future Water Demand Projections
Task 2 – Water Conservation StrategiesTask 2 – Water Conservation Strategies
Task 3 – Groundwater Sustainability AnalysisTask 3 – Groundwater Sustainability Analysis
Task 4 – Prepare the Integrated Water Resources PlanTask 4 – Prepare the Integrated Water Resources Plan
Community InvolvementCommunity Involvement
SepSep OctOct NovNov DecDec JanJan FebFeb MarMar AprApr2 0 0 52 0 0 5 2 0 0 62 0 0 6
Community Meeting Dates
3. Castle Pines North's Water Supply3. Castle Pines North's Water Supply and Current Demandsand Current Demands
Existing SupplyExisting 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
CPNMD
Denver Basin Aquifers
Dawson
Denver
Arapahoe
Laramie-Fox Hills
Alluvial
South-North Cross-section through CPNMDSouth-North Cross-section through CPNMD
NorthSouth
Dawson
Denver
Arapahoe
L-FH
Castle PinesNorth
Denver
Greeley
Laramie-Fox Hills
Arapah
oe
Denver
Dawson
Castle PinesNorth
West East
West-East Cross-section through CPNMDWest-East Cross-section through CPNMD
Next project step: Next project step: complete groundwater analysiscomplete groundwater analysis
Task 1 – Future Water Demand ProjectionsTask 1 – Future Water Demand Projections
Task 2 – Water Conservation StrategiesTask 2 – Water Conservation Strategies
Task 3 – Groundwater Sustainability AnalysisTask 3 – Groundwater Sustainability Analysis
Task 4 – Prepare the Integrated Water Resources PlanTask 4 – Prepare the Integrated Water Resources Plan
Community InvolvementCommunity Involvement
SepSep OctOct NovNov DecDec JanJan FebFeb MarMar AprApr2 0 0 52 0 0 5 2 0 0 62 0 0 6
Community Meeting Dates
CPN Monthly Water DemandsCPN Monthly Water Demands
0
50
100
150
200
250
300
350
400
Jan-99 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04
Acr
e-ft
Summer Demands > 6x Winter Demands
Historic and Projected CPNMD Water DemandsHistoric and Projected CPNMD Water Demands
-
500
1,000
1,500
2,000
2,500
An
nu
al D
em
an
d (
ac
re-f
t)
Current CPNMD Water Demands by Customer Current CPNMD Water Demands by Customer TypeType
Residential use assumes watering every 3 days Residential use assumes watering every 3 days Total 2005 Demand = 1,897 acre-feetTotal 2005 Demand = 1,897 acre-feet
Schools1%
Commercial3%
Open Space Irrigation26%
Residential70%
Breakdown of Typical Residential Water Use*Breakdown of Typical Residential Water Use*
Toilet11% Clothes Washer
9%
Shower7%
Faucet6%
Outdoor58%
Other Indoor3%
Leaks6%
*AWWA Residential End Use Study
Regional Water Demands Regional Water Demands
Counties
GPC
D
2000 Per Capita Demands
The bottom line on our supply and demandThe 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
4. The IWRP Process4. The IWRP Process
The IWRP ChallengeThe 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
Defining the GapDefining the Gap
20062006 20462046
YearYear
Dem
and
(AF/
YR)
Dem
and
(AF/
YR) Demand Demand
GapGap
Existing Reliable SuppliesExisting Reliable Supplies
Water Demand
Water Demand
Sustainability Definition – Context for Evaluating Sustainability Definition – Context for Evaluating Water Supply OptionsWater 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
Focus First On ObjectivesFocus First On Objectives
ObjectivesObjectives
PerformancePerformanceMeasuresMeasures
CompleteCompleteAlternativesAlternatives
OptionsOptions
Models/Models/ToolsTools
PreferredPreferredStrategyStrategy
"Why""Why" "How""How"• Surface water Surface water
storagestorage• More conservationMore conservation• Conjunctive useConjunctive use• Water treatmentWater treatment
• Provide reliabilityProvide reliability• Cost effectivenessCost effectiveness• Water QualityWater Quality
Alternatives Development & Evaluation ProcessAlternatives Development & Evaluation Process
• Show trade-offs Show trade-offs between alternativesbetween alternatives
• Identify common Identify common elements & phase-inelements & phase-in
• Develop Develop implementation implementation strategystrategy
Evaluate SupplyEvaluate SupplyAlternativesAlternatives
Evaluate SupplyEvaluate SupplyAlternativesAlternatives
• Establishes goalsEstablishes goals
• Helps define criteria Helps define criteria for which alternatives for which alternatives will be comparedwill be compared
DefineDefineObjectivesObjectives
DefineDefineObjectivesObjectives
• Identify all feasible Identify all feasible supply and demand-supply and demand-management optionsmanagement options
• Rank options & Rank options & combine into combine into alternativesalternatives
Build SupplyBuild SupplyAlternativesAlternatives
Build SupplyBuild SupplyAlternativesAlternatives
• Identify stakeholdersIdentify stakeholders
• Identify and Identify and incorporate "risk" into incorporate "risk" into decision makingdecision making
• Evaluate partnering Evaluate partnering opportunitiesopportunities
Develop EvaluationDevelop EvaluationFrameworkFramework
Develop EvaluationDevelop EvaluationFrameworkFramework
ObjectivesObjectives
ObjectiveObjective DescriptionDescription
Manage costs Cost of construction, O&M; likelihood of outside funding
Improve reliability Minimize risks of shortage; local control of supply
Long-term sustainability Sustainable use of groundwater resources
Technical implementability Likelihood of supply development, quality of supply, and compatibility with existing water system
Protect the environment Protection of land and water habitats, cultural and social resources, and aesthetic resources
Acceptability Political, institutional, ®ulatory acceptability; permitting
Timely implementation Ability to implement solutions by the time they are needed
Maintain acceptable quality of life
Maintain quality of life with respect to green spaces, etc.
Water quality Provide treated water quality that meets or exceeds standards and its taste is aesthetically pleasing
The IWRP will build integrated alternativesThe IWRP will build integrated alternatives
Surfacewater
Ground-water
Ag Transfers
ReuseStorageConser-vation
Surfacewater
Ground-water
Storage
ReuseConserv..
Portfolio 1Portfolio 1
Ground-water
Storage
Reuse
Conserv.
Portfolio 2Portfolio 2
Ground-water
Storage
ReuseConserv.
Portfolio 3Portfolio 3
AgTransfers
Pro
ject
ed
Dem
and
5. Potential Supply Options5. Potential Supply Options
Conservation: Current MeasuresConservation: 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
Castle Pines North Rebate ProgramCastle Pines North Rebate Program
ItemItem Benefit/SavingsBenefit/Savings RebateRebate
Rain Sensors Overrides irrigation system by detecting rainfall
$100
(Limit one per household)
Programmable Irrigation Clock
Sets time limits to help conserve water
$75
(Limit one per household)
Low Flow Toilets Uses 1.6 gallons per flush; Old toilets use three to five gallons per flush
$100
(Limit three per household)
Front Loading Washing Machines
Uses 20 gallons per load; Horizontal machines use 45 gallons per load
$125
Hot Water Recirculation System (began 2005)
Delivers hot water to fixtures quickly $100
(Limit one per household)
Tankless Hot Water Heaters (not sure when began)
Only heats water as it is used $100
(Limit one per household)
*Source: CPN Website
Conservation Potential 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
Potential Sources of Renewable SuppliesPotential Sources of Renewable Supplies
Colorado River BasinTransbasin deliveries from Upper Blue River to Upper South Platte with Combined Storage and Pipeline
Upper Arkansas RiverWater rts acquisition with storage and pipeline to Upper South Platte Drainage
Upper South Platte BasinWater rts acquisition with storage and pipeline
Lower Arkansas River BasinFallowing and water rts acquisition with storage and pipeline
Lower South PlatteFallowing program and water rts acquisition, gravel pit storage and pipeline
Upper Cherry Ck and Plum CkWater rts acquisition with storage & pipeline
Rueter-Hess Reservoir
310,000
4,500,000
1,530,000
560,000
510,000
1,780,000 320,000
110,000 400,000
164,000
YAMPAYAMPA
WHITEWHITE
COLORADOCOLORADO
GUNNISON
GUNNISONDO
LOR
ESD
OLO
RES SA
N JU
AN
SAN
JUA
N
ARKANSASARKANSAS
SOUTH PLATTESOUTH PLATTE
N. PLATTEN. PLATTE LARAMIELARAMIE
RIO GRANDE
RIO GRANDEWEST SLOPEWEST SLOPEIrrigated Acres:880,000
EAST SLOPEEAST SLOPEIrrigated Acres:2,270,000
Year 2000 Statewide Flows and Irrigated Acres
State of Colorado Year 2000 Agricultural, M&I and Self-supplied Industrial Water Demands
2%
1%
97%
M&I
Self-supplied
Agricultural
West Slope
12%
2%
86%
M&I
Self-supplied
Agricultural
East Slope
Example of Combined Surface and Ground Example of Combined Surface and Ground Water Use for CPNMDWater Use for CPNMD
Future Future DemandDemand
Current Current DemandDemand
PRO
DU
CTI
ON
PRO
DU
CTI
ON
GW
CurrentCurrent AverageAverage Wet YearWet Year Dry YearDry Year
GW
SW
CONDITIONSCONDITIONS
GW
SWGW
SWSW SourcesGW from recharge Non-renewable GWRecharge to GW
Storage: Chatfield, Rueter-HessStorage: Chatfield, Rueter-Hess
6. Upcoming IWRP Project Activities 6. Upcoming IWRP Project Activities and Community Meetingsand Community Meetings
ScheduleSchedule
Task 1 – Future Water Demand ProjectionsTask 1 – Future Water Demand Projections
Task 2 – Water Conservation StrategiesTask 2 – Water Conservation Strategies
Task 3 – Groundwater Sustainability AnalysisTask 3 – Groundwater Sustainability Analysis
Task 4 – Prepare the Integrated Water Resources PlanTask 4 – Prepare the Integrated Water Resources Plan
Community InvolvementCommunity Involvement
SepSep OctOct NovNov DecDec JanJan FebFeb MarMar AprApr2 0 0 52 0 0 5 2 0 0 62 0 0 6
Community Meeting Dates
Content & Objectives of Each Community MeetingContent & 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
For additional information or to For additional information or to provide comments:provide comments:
• Contact:Contact:Castle Pines North Metro DistrictJames McGrady, District Manager
303-688-8550, ext. [email protected]
• Visit:the CPNMD web site
http://www.cpnmd.org
7. Questions, Comments, Input?7. Questions, Comments, Input?