2008 to 2013

AgendaReview Planning & Management Approach

Review the Issues and What’s Been Done

Review the Current Issues

Things in the works

Questions

Identified Issues on 3/25/08Milfoil, weeds, invasive spp.

Water Clarity

Muck

Water Quality/Nonpoint pollution

Water Level

Garbage & Trash

Concern Shallow Lake ‘Switches’Clearwater State Turbid State

Large aquatic plant community

Low algal productivity

Large grazer population (zooplankton)

Low aquatic plant productivity

High algal productivity

Low grazer productivity

2007

Clear scientific understanding of switch into turbid state

Unclear understanding of reverse switch back to healthy water quality

1. Invasive Species Strategy

2. Trends in Water Clarity

3. Muck

Not an Issue that can be

addressed

Muck

Nature of shallow lake

Boat channel excavated in 2008

Requires permit from state – contrary to fishery objectives

4. Non-Point Source PollutionActivity 2009 2010 2011 2012Water Quality Monitoring (9.16) * * *Buffer Strips (9.05)

2 ? ?

Rain Gardens (9.06)

3

Inspect Ponds (9.12) * *

4. Water Quality

Nonpoint Source Pollution/Stormwater Management

Objective Goal 1990-2006 Avg

2008-2012Avg

Total Phosphorus (TP)

40 ug/L 30 ug/L 27.9 ug/L

Chlorophyll-a <15 ug/L 11.6 ug/L 6.6 ug/L

Secchi Disk Transparency

> 6 ft 5.3 ft 8.4 ft

Dissolved Oxygen (DO)

5 mg/L daily avg 8.5 mg/L daily 6.9 mg/L

Treatment of 32% of direct discharge

1 – 2 Buffer strips established each

year

< 1 0

5. Garbage & Trash

Activity 2009 2010 2011 2012

Enforcement Blitz * * * *

Increase Garbage Pick up

* * * *

More Garbage Cans * * * *

6. Water Level Trends

6. Water Level Needs

Know groundwater issues

Follow development of County Geologic Atlas

Follow City and State groundwater appropriation to the Northeast of the Lake (Supply side)

Conserve water

INFILTRATE! Soak It In!

Conclusions

Water quality is very good

Noticeable improvements occurred in 2011 and 2012

Invasive aquatic plants continue to be a challenge

Effects of groundwater on Lake levels is a concern

CCWD Plans & ActionsAnnual

MonitoringLake Level

Lake Water Quality

Lake Vegetation Management

InspectionsLake Outlet & Dam

Grant availabilityDemonstration

Education

Next 3 YearsLake Vegetation Management Plan

Update Lake Management Plan

Develop Aquatic Invasive Species Plan

Groundwater - Surface Water Study

Update Stormwater Management Plan

Watershed Restoration and Protection Plan (TMDL)

Assess berm for Repairs

2013

2014

2015