Accession Number : ADA219221


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


Corporate Author : ARMY ENGINEER DISTRICT ROCK ISLAND IL


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a219221.pdf


Report Date : May 1988


Pagination or Media Count : 740


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.


Descriptors :   *WATER , *ENVIRONMENTAL IMPACT STATEMENTS , *CONTROL , *IOWA , *PLANNING , EROSION , FLOW , FLOODS , CONSERVATION , LAKES , DREDGING , RECREATION , SEDIMENTATION , SOCIAL SCIENCES , ROCK , AUGMENTATION , RED(COLOR) , DAMAGE , WATERFOWL , IMPACT


Subject Categories : Hydrology, Limnology and Potamology
      Water Pollution and Control


Distribution Statement : APPROVED FOR PUBLIC RELEASE