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USGS NRP Tucson: Sediment Impacts from Disturbed and Undisturbed Lands

Scenes from USGS NRP Tucson.

The Sediment Impacts from Disturbed and Undisturbed Lands project pages are currently being archived and will be removed in the near future (Fall 2017).

The acquisition and meaningful interpretation of sediment data from areas disturbed by land-use activities or natural processes are two of the most deficient areas of recognizing nonpoint-source pollution in the United States. The comparison of sediment data from disturbed and undisturbed areas provides a means to (1) evaluate the effects that land-use activities cause, (2) investigate the geomorphic processes that regulate the detachment and transport of sediment, and (3) develop strategies for remedial action to reduce excessive sediment discharges. This information is especially necessary to minimize sediment discharges and sorbed chemical loads from surface-mine, industrial, agricultural, and urban areas. Objectives of this project are to (1)evaluate the extent and utility of sediment data from a variety of land-use areas; (2) predict the movement of sediment from drainange basins affected by those land uses; and (3) assess existing techniques and develop new ones based on geomorphic principles and the application of statistics, geochemistry, and botany to the limited data available as aids in improving our interpretive capabilities.

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