2011 Crooked Lake Comprehensive Management Plan Update

Tim Kelly

Coon Creek Watershed District November 17,

2011

Outline

1) Review Planning & Management Approach

2) Review the Issues and What’s Been Done so far

3) Questions

Full Plan onlinewww.cooncreekwd.org

>News & Information >Plans & Reports

>Crooked Lake Comprehensive

Management Plan 2008-2013 or http://moourl.com/

CrookedLakePlan

Plan Approach (2008)

Management factors

Social factorsPhysical factors

Plan

Develop Strategy

Implement

Monitor

Evaluate

Assess Needs

AdaptiveManagement

Problems, Issues, Concerns

1. Invasive Species: Eurasian water milfoil & curly leaf pondweed

3. Nonpoint Source Pollution/Water Quality

6. Water Levels (Public Workshop results

3/2008)

Water Levels

Water LevelsActivity Pla

n2009 2010 2011 2012

Inspect Dam

9.07

* * * *

Monitor Ground Water

9.10

* * * *

Monitor Lake Levels

9.15

* * * *

Dam Inspection

Fair ConditionProblems

Animal BurrowsTrees & Vegetation

2012 CCWD beginning process of evaluating rehab options and needs

Groundwater Monitoring

2010Refine water BudgetInvestigate Lake ‘Recharge Area’

Crooked Lake Water Source

Groundwater56%

Precipitation44%

Crooked Lake Water Sources

Lake ‘Recharge Area’

Shallow Groundwater Levels

-40.0

-35.0

-30.0

-25.0

-20.0

-15.0

-10.0

-5.0

0.0

5.0

10.0

3/31

/11

4/30

/11

5/30

/11

6/29

/11

7/29

/11

8/28

/11

9/27

/11

10/2

7/11

11/2

6/11

Date

Wat

er T

able

Dep

th (

in)

0.0

0.5

1.0

1.5

2.0

2.5

3.0

Pre

cip

(in

)

Water Level Precip

Bunker Lake Area

2011 Lake Levels (Apr – Nov)

860.50

860.70

860.90

861.10

861.30

861.50

861.70

6. Water Levels (1985-2011)Crooked Lake - period of record

858.0

859.0

860.0

861.0

862.0

Elev

ation

(ft)

2011 Top Tens

100 yrs 158 yrs

Mar Wettest 9th

May Wettest 3rd 7th

Jul Wettest 1st 3rd

Sep Driest 1st 5th

Oct Driest 3rd

CLAA Needs1. Watch city councils & DNR Water Use

webpage for Appropriation Permits (pumping) Northeast of Lake

2. Conserve (ground) Water

3. Soak It In!1. Plant (shoreland) Buffers/Rain gardens2. Aerate lawns 3. Move downspout extenders onto lawn or

garden

Water Quality

4. Non-Point Source Pollution

Activity 2009 2010 2011 2012Water Quality Monitoring (9.16)

* * *

Buffer Strips (9.05)

<N=2

? ?

Rain Gardens (9.06)

*N=3

Inspect Ponds (9.12) * * *

2. Clarity2006 2008 2009 2011

Overall B- B B B

TP C B C B

Chlorophyll-a

A A A A

Clarity C B- B B

Invasive Species

Treatment PlanAnnual Treatment

@15% (9.01)

Plant Survey (9.02)

Assess Capability for Plant Restoration (9.17)

Yes Implement (9.17)

No Reassess Strategy

Apply for 20% treatment(9.03)

Boat Inspection (9.04)

2011 Treatment

Other AIS

Zebra MusselsLegislative Package this coming session

“We can’t do this alone, because the problem is too big”

Steve Hirsch, Director of MDNR Division of Ecological and Water Resources

Questions?