Accession Number:

ADA219221

Title:

Water Control Plan, Lake Red Rock, Iowa. Final Supplemental Environmental Impact Statement

Descriptive Note:

Corporate Author:

ARMY ENGINEER DISTRICT ROCK ISLAND IL

Personal Author(s):

Report Date:

1988-05-01

Pagination or Media Count:

740.0

Abstract:

The Water Control Plan examines a range of alternatives for the regulation fo Lake Red Rock. Plans were formulated which would address sedimentation within the pool and also would attempt to maximize the multiple uses of the lake. The study of alternatives included pool raises, dredging, and dry pool. Each alternative was evaluated according to its costs, its effect on the environment, flood damages, erosion and recreation, and social impacts. The plans were compared against the base condition and, based upon analysis, the dredging and dry pool alternatives were eliminated from further consideration. Dredging was found to be far more costly than the expected benefits, and the dry pool was eliminated because it did not provide a low-flow augmentation capability. The final recommendation plan 7 has been modified to be a one-step conservation pool raise to elevation 734 feet. The final plan includes a 2-foot fall pool raise for the benefit of migrating waterfowl and improvements in the regulation schedule. Keywords Water conservation environment impacts Lake red rock, Iowa, conservation pool Sedimentation.

Subject Categories:

  • Hydrology, Limnology and Potamology
  • Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE