Upper Nisqually River Levee Retrofit EA
The National Park Service (NPS) has prepared an Environmental Assessment (EA) to analyze the potential impacts and benefits of a proposal submitted by Pierce County Planning and Public Works (Pierce County) to retrofit the upper Nisqually River levee with deflectors in Mount Rainier National Park. Pierce County maintains the levee within the park under a right-of-way (ROW) permit. The primary purpose of the proposed action would be to reduce the effects of erosional flows that have resulted in repetitive damage to the levee and to reduce the long term maintenance frequency of this nearly one-mile long flood control facility.
This EA evaluates three alternatives: Alternative A (no action), including continued maintenance and repairs; Alternative B, representing the installation of rock deflectors; and Alternative C, the installation of engineered log jams near Sunshine Point in addition to deflectors, adjacent to the upstream end of the levee, located in the park.
If you wish to comment on this proposal, you may post comments by selecting Document List from the left navigation bar, or mail comments to: Superintendent, Mount Rainier National Park, 55210 238th Ave. E., Ashford, Washington, 98304. This EA will be available for public review and comment for 30 days, ending at 11:00 pm (Pacific Time) on Novermber 28.