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Case Studies
Water Management Associations
Clark Fork Delta Restoration Combats Erosion of Wildlife Habitat
A short documentary film chronicles the multi-million-dollar effort to shore up islands and wildlife habitat that have been extensively eroding in the Clark Fork Delta where the Clark Fork River meets Lake Pend Oreille near Hope, Idaho.

Roughly 12-15 acres have been lost annually because of impacts from the operation of several dams on the watershed, says Kathy Cousins, Idaho Fish and Game Department mitigation biologist. The result has been losses of soil, native riparian and wetland vegetation, as well as the quantity and quality of fish, waterfowl and wildlife habitat.

Construction efforts include:
Island shoreline rock protection completed: Area 3 = 17,600 linear feet and Area 7 = 2,890 linear feet
More than 50,000 tons riprap rock placed in Area 3 and Area 7
51,000 willows embedded in rock
330 trees with root-wads embedded into fill/rock
13 Bendway weirs constructed on Area 3
40 acres raised on Area 3
A total of 100,549 plants were planted between April and June of 2015.
Approximately 20,813 shrubs and trees were planted by volunteers, school groups and IDFG staff.
A total of 79,736 emergent plugs were planted by volunteers and two crews from the Northwest Youth Corp.
The invasive reed canarygrass was treated with prescribed burn; the grass clumps were also sprayed with systemic herbicides.

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Minnesota Aquatic Plant Control May Require Permit - Aquatic plants serve many important functions in lakes; they prevent shoreline erosion, stabilize bottom sediments, provide habitat for fish and wildlife, and tie up nutrients that might otherwise grow algae. The removal of too many aquatic plants can impair their ability to perform these important functions.

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