Document Type

Technical Report

Publication Date

7-1-1971

Keywords

impoundments, trace metals, water quality, reservoirs, dissolved oxygen

Abstract

Impoundment of the Caddo River near Arkadelphia, Arkansas began in August, 1969. Detailed patterns of the dissolved oxygen distribution in this reservoir are presented for the period September, 1969 through April, 1971. Although the reservoir had not reached normal pool elevation, thermal stratification accompanied by severe hypolimnic oxygen depletion has been observed. The dissolved oxygen data show that an under flow occurs in the fall of the year and carries dissolved oxygen into the hypolimnic zone. The gradients of dissolved oxygen concentration observed during the winter indicate that the reservoir does not undergo complete mixing. A short summary of the results of trace elements and other water quality parameters is also included.

Report Number

PUB009

Page

45

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