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Estimated sediment deposition in Lake Corpus Christi, Texas, 1972-85

Open-File Report 87-239

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Abstract

Investigation of sediment deposition in Lake Corpus Christi, Texas, was initiated by studying the published and unpublished sediment data for the 1972-85 water yr for stations located upstream and downstream of the lake. Regression analysis was used to fill in the missing data. Data were tabulated for monthly discharge (acre-ft) and sediment load (tons, acre-ft, and percent by weight). Yearly totals and cumulative averages were computed and included in the tables. An estimated 10,300 acre-ft (wet volume) of sediment has been deposited in Lake Corpus Christi during the 14-yr period of record (1972-85), an average of 736 acre-ft/yr (wet volume). An earlier study by the U.S. Soil Conservation Service, based on 1942-48 changes of lake bottom contours, estimated that 736 acre-ft/yr of suspended sediment had entered Lake Corpus Christi during that 6-yr period. Some difference was found in comparison of the results of the U.S. Geological Survey (Water Resources Division) study and the McCaughan and Etheridge Consulting Engineers study. Total sediment outflow from Lake Corpus Christi was estimated at 177 acre-ft (dry) by the Geological Survey and 1,070 acre-ft (dry) by McCaughan and Etheridge Consulting Engineers. This difference may be due to construction of a new dam, completed in 1958, that is higher and inundated the old dam. (USGS)

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Estimated sediment deposition in Lake Corpus Christi, Texas, 1972-85
Series title:
Open-File Report
Series number:
87-239
Edition:
-
Year Published:
1987
Language:
ENGLISH
Publisher:
U.S. Geological Survey,
Description:
v, 26 leaves :map ;28 cm.