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Beaver Subcommittee Report
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The original Dam height was assessed at 7 feet.
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Skip Lisle was hired to install a flow device to regulate pond height.
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Since January the Dam has
been successfully
maintained at a lower height. During hard
rains the dam has washed out
naturally and the beavers have rebuilt.
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The hydrology section of the report examines several
possible solutions for maximizing flow
through the creek. A combination of flood wall extension and bank overflow was
agreed to be of greatest value in terms of cost and system benefit.
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Water Quality
Beaver dams act as a natural filter and have
been shown to improve water quality.
Concerns remain about stagnation/oxygenation.
The report outlines a proposal for vertical
profile testing during the summer months in which
there is low flow using volunteer and student
effort.
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Creek Walk
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Bank Stabilization/BurrowingConcerns have been raised about beavers
burrowing in the east bank. Muskrats also tunnel in banks and along dams. This is a drawing of a typical tunnel from a muskrat
management article
http://wdfw.wa.gov/wlm/living/muskrats.pdf
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Beaver or Muskrat: The solution is the Same
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Impacts on Other Species
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Trees & Vegetation
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Bird Species
Photos: Cheryl Reynolds
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Population & Dispersal
Beaver Populations Grow Slowly
•Adults are monogamous; breed once per year
•Kits remain with parents for 2-3 years
•Highly Territorial: One colony/2-4 miles
•Dispersers travel 2-30 miles
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Educational Opportunities
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Volunteers•Creek Cleanup
•Paddlers Cleanup
•Willow Planting
•Beaver Docents
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Project Costs
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Grants & Funding
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President: Heidi PerrymanVice President Public Relations: Linda Meza
Vice President Wildlife: Cheryl ReynoldsTreasurer: Donna Mahoney
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Liability
• Consult City Attorney• Use knowledgeable
Experts• Protect Public• Demonstrate good
faith efforts• Consider EIR
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Economic Impacts
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Public Relations
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Management Strategy
Addressing the Problems
• Protection from flooding• Control burrowing• Prevent Erosion• Monitor Water quality
Reaping The Benefits
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Relocation
• Use only Hancock traps
• Hire skilled expert
• Assess relocation site
• Relocate in Fall
• Know risks
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Why live with beavers?
ECOLOGICAL BENEFIT
WILDLIFE VIEWING
EDUCATION
TOURISM
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