Final Environmental Impact Statement. Pembilier Lake and Dam, Pembina River Basin, North Dakota.
Abstract
The project would include a rolled earth type dam across the Pembina River about 2 miles southwest of Walhalla, North Dakota. The reservoir would have a controlled storage capacity of 147,000 acre-feet of which 15,000 acre-feet would be in an 800 surface area conservation pool. Flood storage would result in a 72-percent reduction in projected average annual equivalent damages through the control of floods with a frequency of once in 36 years or less, and the reduction of larger less frequent floods. The project would result in the permanent inundation of about 800 acres of the valley, including 365 acres of woodland, 355 acres of agricultural lands, and 9.5 miles of free flowing river. At design flood-pool, an additional 2,400 acres of the valley and 11.5 miles of river would be inundated for varying durations. Flood storage would result in the modification and destruction of existing valley habitat and would significantly affect wildlife populations beyond the limits of the design flood pool. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1977
- Accession Number
- ADA121523
Entities
Organizations
- St. Paul District, U.S. Army Corps of Engineers