Design Aid for Determining Width of Buffers

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Watershed planners need a tool for determining width of water quality buffers and filter strips that is accurate enough for developing cost-effective site designs and easy enough to use for making quick determinations on a large number and variety of sites.

This paper desribes a graphical design aid developed for estimating the width needed to achieve target trapping efficiencies for different pollutants under a broad range of site conditions.