Lake Winnebago Water Clarity and Aquatic Plant Growth During 2010
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Transcript of Lake Winnebago Water Clarity and Aquatic Plant Growth During 2010
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Lake Winnebago Water Clarity and Aquatic Plant Growth During 2010
Impacts to Beneficial Uses and Aquatic Plant
Management Options
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Sub-Agenda• Two Major Questions submitted to Senator
Hopper’s office• Beneficial Uses • Water Quality• Roles of Aquatic Plants• Impacts to Beneficial Uses• Aquatic Plant Management (APM) Options• Long Term Funding Sources• Questions and Answers
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Question #1
• Why isn't the DNR/Corps of Engineers being held accountable for the plan on the water level?
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Water Level Management
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Question #2
• Why can't we KILL the weeds?
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Beneficial Uses of Our Waters
• Scenic Beauty• Swimming• Boating• Fishing• Hunting
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Water Quality
• All water quality data collected by DNR is available to everyone.
• http://dnr.wi.gov/lakes/Projects/ByCounty.aspx
– Calumet County (2 Mi from Neenah)– Winnebago County (3 Mi from Oshkosh)– Fond du Lac (Deep Hole-South End)
• Or search “Water quality Reports”
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Lake Winnebago Near Fond du LacWater Clarity 1990-2010
April through October
0
2
4
6
8
10
12
14
Secch
i D
ep
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ft)
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Finding Data
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Finding Data
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Finding Data
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Finding Data
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Water Quality Cont’d
• Data do not always reflect observations• 1960’s
– Algae blooms
• 1972 Clean Water Act– Direct discharge (waste water treatment
facilities) pollution targeted• Industrial facilities, Governments, Municipalities,
some Agricultural facilities
• 1980’s/1990’s– Urban and rural runoff targeted
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The Role of Aquatic Plants
• Absorb wind/wave energy• Maintain Clear water• Oxygen production• Habitat
– Fish/other aquatic life– Wildlife
• Nutrient absorption
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Submerged Aquatic Plants Typically Become Established
May - June• Plants require sufficient sunlight in early growth phases
• Occurs at depths of lake where light supports photosynthesis
• Turbidity can prevent light reaching aquatic plants
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Recreational Response
• “Bad for swimming and boating.”• “Cancellation of backyard activities.”• “Loss of revenue from anglers and
other recreational users.”• “Bad for tourism.”
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Fishery Response
• Numerous reports state this is the best fishing (bluegills and perch) that people can remember
• Lake-wide Fishery Assessments– Perch, bluegill and crappie numbers on the rise
• Near shore areas – Spawning, refuge, feeding
• Increase in fish numbers coincides with increased water clarity and the increase in rooted aquatic vegetation.
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Fishery Response
• The total impact to the local economy is:
• $234,000,000 annually• Supports 4,300 jobs
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Wildlife Response
Best waterfowl hunting in many years• Increase in migratory waterfowl numbers
coincides with increased water clarity and the increase in rooted aquatic vegetation.
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Our Mission and Challenge• To manage the system in a manner that
considers all of our beneficial uses so we all may enjoy this great resource.– Short-term
• Aquatic plant management and APM permits– Long-term
• Lake and aquatic plant management planning
– Grant Program
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Aquatic Plant Management and Protection Program
• Manual Removal• Chemical Control (NR 107 Permit)• Mechanical Harvesting (NR 109
Permit)
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Aquatic Plant Manual Removal• Waterfront Landowner
may cut, rake, and remove aquatic plants in a 30’ area without a permit.
• Cannot use external or auxiliary power: must be a hand-held device.
• Vegetation must be removed from the water body.
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South End Lake Winnebago- June 23rd 2010
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Same Location June 25th
• Following Rain Event and Wind Shift
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Blue Green Algae (Shoreline)
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Brighton Beach, Menasha
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Filamentous Algae Accumulation
• West Shore Lake Winnebago- July 2010
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West Shore Lake Winnebago
• Filamentous Algae
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Navigation Relief
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Chemical Treatment Millers Bay
• Contact Herbicides and Algaecide
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Aquatic Plant Harvester
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Harvester Conveyer- Loader
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Aquatic Plant Chemical Control Permit Application
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Aquatic Plant Management Information
• Chuck Fitzgibbon– 920-424-3061– [email protected]
• http://dnr.wi.gov/lakes/plants/• Search “aquatic plants” on the DNR
home page.
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Grant Program
• Small Scale, Large Scale, Lake Protection, Aquatic Invasive Species (AIS)
• Qualified Sponsor– Counties, cities, villages, tribes, qualified
non profit organizations• Detailed information available:
– http://dnr.wi.gov/lakes/grants/– Search “Lake Grants” DNR home page
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Grant Program• Small Scale Lake Planning Grants
– Education, obtain and distribute information, develop management goals
– 75% of project up to $3,000– Deadlines: February 1 and August 1
• Large Scale Lake Planning Grants– Conduct technical studies – Determine elements of/or complete a
comprehensive Lake Management Plan– 75% of project up to $10,000– Deadlines: February 1 and August 1
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Grant Program
• Lake Protection Grants– Land acquisition, wetland and shoreland
restoration, local regulation/ordinance development
– 75% of project up to $200,000• Maximum amounts are dependant on
specific project category
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Contacts for the Grant Program
• For Large and Small Scale Lake Planning Grants:– Jay Schiefelbein
• 920-662-5175 or 920-303-5449• [email protected]
– Ted Johnson• 920-787-4686 x3017• [email protected]
• For AIS Grants:– Brenda Nordin
• 920-662-5110• [email protected]
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Questions/Comments