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Water Resources Assessment & Issues September 16, 2010 Coon Creek Watershed District
35

Comp Plan 2020 Public Input Summary

Jul 02, 2015

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Page 1: Comp Plan 2020 Public Input Summary

Water Resources Assessment & Issues

September 16, 2010

Coon Creek Watershed District

Page 2: Comp Plan 2020 Public Input Summary

Purpose Tonight

1. Bring you up to date2. Brief you on what we’ve learned3. Seek input

Page 3: Comp Plan 2020 Public Input Summary

Agenda1. Intro to CCWD

2. Water Resource Assessment

3. Issues

4. Needs

Page 4: Comp Plan 2020 Public Input Summary

Coon Creek Watershed 92 sq mi. (58,880 acres)270 miles of open channel363 miles of pipe16,800 acres of lake & wetland

Page 5: Comp Plan 2020 Public Input Summary

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

Page 6: Comp Plan 2020 Public Input Summary

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)

Page 7: Comp Plan 2020 Public Input Summary

Water ResourcesChanges in ConditionsAvailable online: www.cooncreekwd.org

ReviewsCurrent Plan2000-2009 Changes & TrendsImplications of Changes & Trends2020 Management Expectations

Page 8: Comp Plan 2020 Public Input Summary

Issues

Physical

ManagementSocial

Page 9: Comp Plan 2020 Public Input Summary

Physical Issues: Supply & Capacity Concerns

Hydrology BiologyGeologyChemistry

Word of the Day: Biogeochemisis

Page 10: Comp Plan 2020 Public Input Summary

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))

Page 11: Comp Plan 2020 Public Input Summary

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

Page 12: Comp Plan 2020 Public Input Summary

Supply Issue

Surface Water

Page 13: Comp Plan 2020 Public Input Summary

Social Issues

Issues of Direct & Indirect Demand

Page 14: Comp Plan 2020 Public Input Summary

Demand Issues

Direct

Drainage

Water Source

Recreation

Indirect

Flood Control

Groundwater Recharge

Water Quality

Page 15: Comp Plan 2020 Public Input Summary

Drainage: Decrease in Acres, Increase in Need

Direct Demand Issues

Page 16: Comp Plan 2020 Public Input Summary

Direct-Demand

Water Source

Increase in Demand

Page 17: Comp Plan 2020 Public Input Summary

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

Page 18: Comp Plan 2020 Public Input Summary

Indirect Demand Issues

TMDLDevelopBiota

MaintainVolume

MaintainDissolved Oxygen

2.5ReducePhosphorus

8ReduceTSS

3ReduceTurbidity

FactorNeedWater Quality

Page 19: Comp Plan 2020 Public Input Summary

Management Issues

Technology & Know-HowFundingRegulationPublic RelationsAllocation & Decision Making

Page 20: Comp Plan 2020 Public Input Summary

Management IssuesTechnology & Know-how

Groundwater x Surface water modeling

Large-scale infiltration

Infiltration/Groundwater recharge for target water body

Page 21: Comp Plan 2020 Public Input Summary

Management IssuesFunding

Equitable & sufficient financing approaches

thatreflect full economic value of water resource

Page 22: Comp Plan 2020 Public Input Summary

Management IssuesPublic Relations

Informing the public about ways to reduce stormwater pollution

Involving the public in stormwater management

Page 23: Comp Plan 2020 Public Input Summary

Management IssuesRegulation

Facilitating required changesInfiltration/water conservationMinimum Impact Development Standards

(MIDS)Impaired water goalsAnti-Degradation GoalsCoordinated water planning

Page 24: Comp Plan 2020 Public Input Summary

Management IssuesGovernment Relations

Increased Coordination & Collaboration inProjectsProgramsFunding

Page 25: Comp Plan 2020 Public Input Summary
Page 26: Comp Plan 2020 Public Input Summary

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

Page 27: Comp Plan 2020 Public Input Summary

Deteriorating Issues

Retain some of the load by retaining volume

Erosion & Sed. Control

NeedIssue

Page 28: Comp Plan 2020 Public Input Summary

Serious Issues

Infiltrate to predevelopment Soil Hydro group or greater

Retain some of the load by retaining volume

Groundwater

Wetlands & Lakes

Water Quality

NeedIssue

Page 29: Comp Plan 2020 Public Input Summary

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

Page 30: Comp Plan 2020 Public Input Summary

Serious ConditionSerious ConditionGroundwater

SustainableSustainableFloodplain

DeterioratingSustainableErosion & Sed. Control

SustainableSustainableWildlife

Serious ConditionDeterioratingWetlands & Lakes

Serious ConditionSustainableWater Quality

SustainableSustainableDitches & Drainage

20102000Resource

Page 31: Comp Plan 2020 Public Input Summary
Page 32: Comp Plan 2020 Public Input Summary

Questions?

www.cooncreekwd.org

[email protected]

Page 33: Comp Plan 2020 Public Input Summary
Page 34: Comp Plan 2020 Public Input Summary
Page 35: Comp Plan 2020 Public Input Summary

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