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<br /> TABLE 11-2 <br /> BASIN PARAMETERS <br /> Present Conditions Future Conditions <br /> Impervious InfiltratIon Rates -:.,', Impervious I nfll tratlon Rates -k'''' <br /> Area Area Fo Fc Area Fo Fc <br />Bas I n (Sq. M1.) % I nch/H r I nch/H r % Inch/Hr I nch/H r <br />- <br /> 2.38 9 2.28 1.08 21 1.5 .~ <br /> 2.38 9 6.0~', 2.70-:, 21 6.01, 2.7", <br />2 1.30 21 7.8 2.4 39 7.8 1.6 <br />3 1.49 23 7.8 2.4 40 7.8 1.6 <br />4 1. 18 10 3.66 0.84 .- 3.3 0.72 <br /> II <br />5 1.66 14 5.1 1.3 23 4.8 1.26 <br />6 1.94 32 4.68 1.26 45 4.08 .96 <br />., 0..51 23 , HI 0.72 36 " I. .6 <br />I .J. IV ~.- <br />Q , en 'C 0 ., n c.c. j,..., 2.28 .6 <br />U 1..:1;1 JU L. j V..VV -, <br />9 0.50 34 2.7 0.66 48 2.28 .6 <br />10 L13 26 3.48 0.9 36 3.36 .9 <br />11 0.16 30 3.06 0.72 43 2.28 .6 <br /> <br />* Forested areas <br /> <br />Fo Initial Infiltration Rate - Inches per hour <br /> <br />Fe Steady State InfIltration (reached In about 10 to 20 mlnutes after <br />begInning of storm) - Inches per hour <br /> <br />..,. For pervious areas <br />Infiltration rates obtained from field ring infiltrometers <br /> <br />, <br />\!) <br />