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~~ <br />i- <br /> <br />Footnotes to Table D-7-6 (Continued) <br />D (High runoff potential):'~Soils having very slow infiltration rates <br />~'-' ~ " whe:r~thoroughly wetted and consisting chiefly of clay soils with a <br />high swelling potential, soils with a permanent high water table, <br />soils with a claypan or clay layer at oz near the surface, and <br />shallow soils over nearly impervious material. These soils have a <br />very slow rate of water transmission. <br />Generally, hydrologic group A has an infiltration rate in excess of 3.5 inches <br />per hour, hydrologic group B has an infiltration rate of 2.0 to 3.5 inches per <br />hour, hydrologic group C has an infiltration rate of 0.5 [0 2.0 inches per <br />hour and hydrologic group D has an infiltration rate of less than 0.5 inches <br />per hour. <br />Available Water Capacity: ~-Very Low <br />Low <br />Moderate <br />High <br /><2 inches water/36 inches soil <br />2-4 inches water/36 inches soil <br />G-6 inches water/36 inches soil <br />>6 inches water/36 inches soil <br />-129- <br />REVISED FEB 1 3 '87 <br />