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• Mr. Archer <br />10 July 90 <br />Page 2 <br />The "as functioning" pond is nearly rectangular in shape. The <br />embankment break-in-slope and waterline expressions are slightly <br />irregular and rounded at the corners. Therefore, the areas computed <br />from measurements that define a trapezoidal embankment break-in-slope <br />and rectangular waterline are reduced five percent to accommodate these <br />irregularities. Water depth at the center of the pond is estimated to <br />be three feet. <br />A. Total volume = 0.537 acft <br />• ti <br />C <br /> omputa <br />ons: <br /> Area at embankment break-in-slope (measured) <br /> 57 X 103 = 5871 5871 X .95 = 5577 sgft <br /> Area at top of drainage pipe (calculated) <br /> 51.4 X 95 = 4883 4883 X .95 = 4639 sgft <br /> Area at waterline (measured) <br /> 38.5 X 82 = 3157 3157 X .95 = 2999 sgft <br /> Area at pond bottom (calculated) <br /> 20.4 X 67.3 = 1373 X .95 = 1304 sgft <br /> Volume from embankment break-in-slope to <br /> waterline <br /> 0.5 (2999 + 5577) X 3.95 (measured) = 16,938 <br /> tuft or 0.389 acft <br /> Volume of water <br /> 0.5 (1304 + 2999) X 3 (estimated) = 6,455 tuft <br /> or 0.148 acft <br /> Total volume 0.389 + 0.148 = 0.537 acft <br /> B. Embankment shape is trapezoidal, average width <br /> 57 feet and 103 feet in length, an area of 5577 sgft <br /> C. The excavation is 3.95 feet (measured) plus 3.0 <br /> feet (estimated water depth) deep = 6.95 ft <br /> D. Impoundment sideslopes are variable from 1.7 <br />• to 3.5 horizontal: 1 vertical. <br />