Land Drainage and Estuarine Salinity Response

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by Jerad D. Bales, US Geological Survey, United States,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering:

Abstract: An investigation is being conducted to (1) quantify the short-term effects of freshwater agricultural drainage on salinity in a tidal creek and (2) evaluate the off-site effects of water-control structures on flow and water quality in channels that drain cropland in the Albemarle-Pamlico region of North Carolina. A continuous record of velocity is being obtained in three canals. Salinity is being recorded at two locations in the receiving water, and water-surface elevations are being measured in the canals and at two receiving-water sites. These data should provide insight into the mechanisms responsible for salinity fluctuations in the tidal creeks that receive artificial drainage.

Subject Headings: Drainage | Salinity | Estuaries | Tides | Salt water | Rivers and streams | Agriculture | Canals | Water quality | North Carolina

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