Accession Number:

ADA110270

Title:

Grand Forks - East Grand Forks Urban Water Resources Study. Water Supply Appendix.

Descriptive Note:

Final rept. 1978-1980.

Corporate Author:

CORPS OF ENGINEERS ST PAUL MN ST PAUL DISTRICT

Personal Author(s):

Report Date:

1981-07-01

Pagination or Media Count:

429.0

Abstract:

This appendix consists of three reports Water Supply Study-Problem IdentificationAlternative FormulationEvaluation Water Supply Study Final Report 1980 and Low-Flow Frequency Analysis of the Red River of the North at Grand Forks and Red Lake River at East Grand Forks. A low-flow study of drought flows on the Red and Red Lake Rivers found that river flow, plus storage provided by the cities low-head dams, would satisfy 2030 demands during a 50-year drought. The uncertain future of the Garrison Diversion Unit made it an unsatisfactory alternative water source. The Elk Valley and Beach Ridge aquifers were unsuitable because of inadequate recharge rates. The most economical treatment and supply alternative would be for the two cities to develop a combined system in 2005. A water conservation program was proposed which could reduce demand and costs. A five-stage drought emergency plan of action was developed to cope with drought conditions more severe than the 50-year design event.

Subject Categories:

  • Hydrology, Limnology and Potamology
  • Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE