Accession Number:

ADA371403

Title:

Aggradation, Degradation, and Water Quality Conditions.

Descriptive Note:

Final rept.

Corporate Author:

ARMY ENGINEER DISTRICT OMAHA NE

Personal Author(s):

Report Date:

1993-03-01

Pagination or Media Count:

176.0

Abstract:

The purpose of this study is to compile a record of pertinent data and information relative to aggradation, degradation, and water quality within the system of six Missouri River mainstem reservoirs and to analyze these data to determine trends in geomorphologic changes during the period of record. Specific objectives include a Evaluate changes in channel geometry for survey ranges along the study reaches of the Missouri River mainstem reservoirs. b Analyze the reservoir volume by segment data to determine the depletion of reservoir capacity within each bounded volume segment. c Analyze the spatial and temporal trends in the 50 percent coarser bed material gradation by plotting sediment grain size data versus distance along the river for the period of record. d Plot cumulative streambank erosion data, identifying any spatial or temporal trends in the shoreline erosion processes. e Prepare and evaluate stage trends and tailwater trends of each dam. f Provide an overview of water quality conditions in the lakes. Four states are included in the study area 1 Montana, 2 North Dakota, 3 South Dakota, and 4 Nebraska. The study reach begins at the head of Fort Peck Lake River Mile RM 2067.8 and extends downstream along the Missouri River to Ponca, Nebraska 1960 RM 753.6, spanning a distance of 1,314 valley miles.

Subject Categories:

  • Hydrology, Limnology and Potamology
  • Civil Engineering
  • Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE