Neutrino Input to CERN Strategy Review & Summary of Town Meeting
Comp Plan 2020 Public Input Summary
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Transcript of Comp Plan 2020 Public Input Summary
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Water Resources Assessment & Issues
September 16, 2010
Coon Creek Watershed District
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Purpose Tonight
1. Bring you up to date2. Brief you on what we’ve learned3. Seek input
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Agenda1. Intro to CCWD
2. Water Resource Assessment
3. Issues
4. Needs
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Coon Creek Watershed 92 sq mi. (58,880 acres)270 miles of open channel363 miles of pipe16,800 acres of lake & wetland
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Mission StatementTo manage groundwater and surface water
systems to:
Prevent property damage
Maintain hydrologic balance
Protect water quality for the safety and enjoyment of citizens & the preservation and enhancement of wildlife habitat. 1990
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Planning mandates
Comprehensive Management Plan
Watershed DistrictWatershed Act
(M.S. 103D)
WMOMetropolitan Water
Management Act(M.S. 103B)
MS4Clean Water ActNPDES-SWPPP
(40 CFR 112)
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Water ResourcesChanges in ConditionsAvailable online: www.cooncreekwd.org
ReviewsCurrent Plan2000-2009 Changes & TrendsImplications of Changes & Trends2020 Management Expectations
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Issues
Physical
ManagementSocial
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Physical Issues: Supply & Capacity Concerns
Hydrology BiologyGeologyChemistry
Word of the Day: Biogeochemisis
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Supply Issue
Less annual precipitationGreater occurrence of larger precipitation events over smaller areas
Annual Precipitation (Last Decade)
y = -0.4053x + 33.5350.00
5.00
10.00
15.00
20.00
25.00
30.00
35.00
40.00
45.00
1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
Pre
cip
(in
.)
Annual (Last decade) Linear (Annual (Last decade))
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Supply Issue
Surficial Groundwater Scarcity
800
810
820
830
840
850
860
870
880
890
900
910
920
Round
Lk Bld
Hanso
n
Univer
sity
Centra
l
Lexin
gton
Sand
Clay
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Supply Issue
Surface Water
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Social Issues
Issues of Direct & Indirect Demand
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Demand Issues
Direct
Drainage
Water Source
Recreation
Indirect
Flood Control
Groundwater Recharge
Water Quality
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Drainage: Decrease in Acres, Increase in Need
Direct Demand Issues
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Direct-Demand
Water Source
Increase in Demand
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Indirect Demand Issues
Flood ControlMore “localized” Regional flood events
(Andover x Ham Lake)
Groundwater RechargeNeed approximately 10 to 15,000 AFPY for
10 years to return to 1988 elevations
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Indirect Demand Issues
TMDLDevelopBiota
MaintainVolume
MaintainDissolved Oxygen
2.5ReducePhosphorus
8ReduceTSS
3ReduceTurbidity
FactorNeedWater Quality
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Management Issues
Technology & Know-HowFundingRegulationPublic RelationsAllocation & Decision Making
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Management IssuesTechnology & Know-how
Groundwater x Surface water modeling
Large-scale infiltration
Infiltration/Groundwater recharge for target water body
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Management IssuesFunding
Equitable & sufficient financing approaches
thatreflect full economic value of water resource
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Management IssuesPublic Relations
Informing the public about ways to reduce stormwater pollution
Involving the public in stormwater management
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Management IssuesRegulation
Facilitating required changesInfiltration/water conservationMinimum Impact Development Standards
(MIDS)Impaired water goalsAnti-Degradation GoalsCoordinated water planning
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Management IssuesGovernment Relations
Increased Coordination & Collaboration inProjectsProgramsFunding
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Sustainable Issues
Control post development peak to predevelopment rate
Evaluate 100 yr event
FloodplainOverbank Flood Protection
Extreme Storm
Reduce erosive velocities & unstable conditions
Ditches & DrainageChannel Protection
NeedIssue
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Deteriorating Issues
Retain some of the load by retaining volume
Erosion & Sed. Control
NeedIssue
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Serious Issues
Infiltrate to predevelopment Soil Hydro group or greater
Retain some of the load by retaining volume
Groundwater
Wetlands & Lakes
Water Quality
NeedIssue
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Types of IssuesTypes of Issues
Existing conditions require immediate attention because
2. They are a serious threat
And/or
6. There is no known technology or management strategy for dealing with them
1. Management and technology are not expected to keep pace with demands for resource uses,
and/or
5. Resource conditions will deteriorate in the future
Management can sustain existing conditions and/or projected levels of use
SeriousDeterioratingSustainable
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Serious ConditionSerious ConditionGroundwater
SustainableSustainableFloodplain
DeterioratingSustainableErosion & Sed. Control
SustainableSustainableWildlife
Serious ConditionDeterioratingWetlands & Lakes
Serious ConditionSustainableWater Quality
SustainableSustainableDitches & Drainage
20102000Resource
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Types of IssuesTypes of Issues
Require immediate attention
• They present serious problems
• There is no known management strategy or technology for dealing with them
1. Future management and technology are not expected to keep pace with demands for resource uses,
and/or
5. Resource conditions will deteriorate in the future
Existing conditions and projected levels of use can be sustained with current and expected future levels of management.
SeriousDeterioratingSustainable