metropolitan council master water supply plan march 11, 2009 christopher elvrum manager, water...
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Metropolitan Council
Metropolitan Council Master Water Supply Plan
March 11, 2009
Christopher Elvrum Manager, Water Supply Planning
Keith ButtlemanAssistant General Manager,
Environmental Quality Assurance
Purpose
Draft Master Water Supply Plan
Public review comments
Master Plan completion schedule
Master Plan Conclusions
Overall supplies are regionally adequate
Some water supply issues will occur using traditional sources
Options available to address potential issues
Early identification of issues critical
Ongoing assessment will guide sustainable water use choices
Goal and Principles
Goal: Ensure a sustainable water supply for current and future generations.
Principles
Water supply integral component of planning
Regional context for local decisions
All hydrologic systems considered
Water quality important
Interjurisdictional cooperation viable option
Cost-effectiveness considered
Wise use critical
Availability Analysis
Population forecasts
Land use
Water use
Climate
Groundwater recharge
Contamination
Aquifer analysis
Water Supply Availability AnalysisIssue Identification
METROPOLITAN AREA WATER SUPPLY MASTER PLAN
Ongoing Evaluation
Conservation Surface Water Evaluation
Metro Model 2
4,913 miles2
Includes entire metro
9 layers
Unconsolidated
Prairie du Chien
St. Lawrence
Ironton-Galesville
Mt. Simon
St. Peter
Jordan Eau Claire
Franconia
Model Questions
Are supplies available where we need them?
Will pumping harm:— neighboring wells— natural resources— the aquifer
How will climate and land use affect future availability?
Planning horizons: 2030, 2050
Municipal water use drives water demand growth
— Non-municipal demand included; no change forecasted
Current sources used for future demand whenever possible
Scope and Assumptions
Water Supply Development Issues
Significant decline in aquifers
Well interference
Impacts on surface waters
Significant uncertainty regarding aquifer extent and productivity
Groundwater contamination and vulnerability to contamination
DRAFT
DRAFT
Reporting Results: Community Water Supply Profiles
Current and projected water use
Current Sources
Available Sources
Issues that need to be addressed
Potential impact to surface waters
Issue Responses
Issue: Potential impact to surface waters
Threshold
>1m predicted decline in surficial aquifer by 2030
Response
• Develop resource protection thresholds
• Daily measurements at wells and resource
Issue Responses
Development of resource protection thresholds
Increased monitoring and data collection
Evaluation of supply alternatives
Increased conservation
Limit withdrawals
- Use alternative source is an option
DRAFT
Components of the Plan
Report
Community Profiles
Issue Responses
Conservation Toolbox
Water Supply Make-A-Map Application
Master Plan Public Comments PeriodNovember 3 – December 16th
Public Meetings 10:00am-Noon:December 2, City of Woodbury City Hall December 3, City of Savage, City HallDecember 4, City of Maple Grove Government Center
Email, US Mail, Voice Mail, Fax• Mail: Metropolitan Council Data Center, 390 N. Robert
Street, St. Paul, MN 55101 • Fax: 651-602-1464 • Public Comment Line: 651-602-1500 • Email: [email protected]• TTY: 651-291-0904
Public Commenters
Public meetings— 46 attendees from:
– 10 cities and townships – counties, – DNR, MDH, EQB, – consultants, non-profits– Metro Cities (AMM), and– Representative Paul Gardner
— 4 Metropolitan Area Water Supply Advisory Committee Members
Letters/emails
Total of 59 commenters
Comments
Metro Model 2
Technical Analysis
Integrating Water Supply with Comprehensive Planning
Roles and Responsibilities
Development of community Profiles and Issue Responses
Implementing and Updating the Master Plan
Surface water and Stormwater
Model Recalibration
Incorporate additional data
More refined assessment
Changes made to the community profiles
Report Clarification
Technical methods in more detail
Water supply and comprehensive planning integration
Plan provides guidance
Response reasonableness
Issue identification and screening methods
Ongoing planning
Master Water Supply Plan
Result of an inclusive process
Comprehensive assessment of long-term demand and supply availability
Framework for basing planning and policy decisions
Next Steps
Second Draft Currently Available for Review
Final Advisory Committee Review – March 26
DNR/Met Council Approval – April/May