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DRAINAGE CRITERIA MANUAL (V. 3) CONSTRUCTION BEST MANAGEMENT PRACTICES <br />1p <br />CHECK DAM <br />Definition <br />Small temporary dam constrixted across a swate or drainage.ditch. <br />Pur ose <br />To reduce the velocity of stornrwater flows and erosion of the swale or ditch. <br />ROCK CHECK DAM <br /> <br />4 -to 6- Inch <br />L. - The distance such that poor 1 <br />A nnrol A nro of omi ia1 alavzdinn <br />From: Virginia Soil and Water Conservation Commission, 1985 <br />Figure C-21-Check Dam <br /> <br />C-60 9-1-99 <br />Urban Drainage and Flood Control District <br />SPACING BETWEEN CHECK DAMS