Progress report on Black Mesa monitoring program; 1977

Open-File Report 78-459


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Monitoring of coal mine operations on Black Mesa, Ariz., was started in 1971 to determine the effects of strip mining on water resources in the area. Monitoring on and near the mesa includes measurements of ground-water levels and quality and quantity, sediment concentration, and chemical quality of surface water. The surface-water monitoring consists of: (1) rainfall-runoff characteristics near the mine, and (2) surface-flow conditions and water-quality characteristics at Moenkopi Wash at Moenkopi. Three watersheds of about 400 acres each are instrumented for the collection of flow data, precipitation data, and water samples for determination of chemical quality and sediment concentration. Each watershed is equipped with a data-collection platform that transmits data via satellite to a computer that provides near-real time information ground-water withdrawal on the regional potentiometric surface in the aquifer on a continuing basis. The available data are insufficient to assess the effects of mining on the quantity , sediment concentration, or chemical quality of runoff. Water levels in seven wells have not shown significant declines but water levels in other wells have declined as much as 7 feet. (Woodard-USGS)
Publication type Report
Publication Subtype USGS Numbered Series
Title Progress report on Black Mesa monitoring program; 1977
Series title Open-File Report
Series number 78-459
DOI 10.3133/ofr78459
Edition -
Year Published 1978
Language ENGLISH
Publisher U.S. Geological Survey,
Description vi, 38 p. :ill., 2 fold. maps ;27 cm.
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