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Title: Fluorometric techniques for tracing reservoir inflows
Authors: Environmental and Water Quality Operational Studies (U.S.)
Johnson, Marc C.
Keywords: Fluorimetry
Fluid dynamics
Water quality
Issue Date: Apr-1984
Publisher: Environmental Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Description: Instruction Report
Abstract: A reservoir's storage capacity, trophic state, and water quality are affected by tributary inflows which transport suspended and dissolved materials into and through the reservoir. The impact these materials have on reservoir and release water quality depends on how the inflow moves through and mixes within the reservoir. The movement of the inflow in a reservoir is often influenced by such factors as irregular morphometry, variable stratification, and engineering activities (e.g., preimpoundment clearing of trees, submerged cofferdams, and project operation). A reliable means of determining how inflows move and mix within a reservoir is to conduct field investigations using a fluorescent dye as a tracer. This report presents a methodology for conducting such a study. Included is information on the characteristics of fluorescent dyes, the principles and equipment of field fluorometry, methods for properly marking an inflow with dye, sampling methods, and guidance on data analysis.
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