Vegetated Filter Strip System Design Manual
Design Tables

Discharge Rate to Infiltration Area Infiltration Area Required Based on Saturated Hydraulic Conductivity of the Following Soil Texture Classes*
Sandy Clay Loam Clay Loam Silty Clay Loam
Table 6.3 Infiltration Area Required Based on Saturated Hydraulic Conductivity of Soil Texture Classes
m3/s gal/min m2 ft2 m2 ft2 m2 ft2
1.00E-04 1.59 83.75 901.52 156.74 1687.18 240.38 2587.55
2.00E-04 3.17 167.50 1803.05 313.48 3374.36 480.77 5175.10
3.00E-04 4.76 251.26 2704.57 470.22 5061.54 721.15 7762.64
4.00E-04 6.34 335.01 3606.10 626.96 6748.71 961.54 10350.19
5.00E-04 7.93 418.76 4507.62 783.70 8435.89 1201.92 12937.74
6.00E-04 9.51 502.51 5409.15 940.44 10123.07 1442.31 15525.29
7.00E-04 11.10 586.26 6310.67 1097.18 11810.25 1682.69 18112.84
8.00E-04 12.68 670.02 7212.19 1253.92 13497.43 1923.08 20700.38
9.00E-04 14.27 753.77 8113.72 1410.66 15184.61 2163.46 23287.93
1.00E-03 15.85 837.52 9015.24 1567.40 16871.79 2403.85 25875.48
1.50E-03 23.78 1256.28 13522.86 2351.10 25307.68 3605.77 38813.22
2.00E-03 31.70 1675.04 18030.49 3134.80 33743.57 4807.69 51750.96
2.50E-03 39.63 2093.80 22538.11 3918.50 42179.47 6009.62 64688.70
3.00E-03 47.55 2512.56 27045.73 4702.19 50615.36 7211.54 77626.44
3.50E-03 55.48 2931.32 31553.35 5485.89 59051.25 8413.46 90564.18
4.00E-03 63.40 3350.08 36060.97 6269.59 67487.15 9615.38 103501.92
4.50E-03 71.33 3768.84 40568.59 7053.29 75923.04 10817.31 116439.66
5.00E-03 79.25 4187.60 45076.21 7836.99 84358.93 12019.23 129377.40
5.50E-03 87.18 4606.37 49583.84 8620.69 92794.83 13221.15 142315.14
6.00E-03 95.10 5025.13 54091.46 9404.39 101230.72 14423.08 155252.88
6.50E-03 103.03 5443.89 58599.08 10188.09 109666.61 15625.00 168190.63
7.00E-03 110.95 5862.65 63106.70 10971.79 118102.51 16826.92 181128.37
7.50E-03 118.88 6281.41 67614.32 11755.49 126538.40 18028.85 194066.11
8.00E-03 126.80 6700.17 72121.94 12539.18 134974.29 19230.77 207003.85
8.50E-03 134.73 7118.93 76629.56 13322.88 143410.19 20432.69 219941.59
9.00E-03 142.65 7537.69 81137.19 14106.58 151846.08 21634.62 232879.33
9.50E-03 150.58 7956.45 85644.81 14890.28 160281.97 22836.54 245817.07
0.01 158.50 8375.21 90152.43 15673.98 168717.87 24038.46 258754.81
0.02 237.75 12562.81 135228.64 23510.97 253076.80 36057.69 388132.21
0.02 317.00 16750.42 180304.86 31347.96 337435.74 48076.92 517509.62
0.03 396.26 20938.02 225381.07 39184.95 421794.67 60096.15 646887.02
0.03 475.51 25125.63 270457.29 47021.94 506153.61 72115.38 776264.42
0.04 554.76 29313.23 315533.50 54858.93 590512.54 84134.62 905641.83
0.04 634.01 33500.84 360609.72 62695.92 674871.47 96153.85 1035019.23
0.05 713.26 37688.44 405685.93 70532.92 759230.41 108173.08 1164396.63
0.05 792.51 41876.05 450762.14 78369.91 843589.34 120192.31 1293774.04
0.06 871.76 46063.65 495838.36 86206.90 927948.28 132211.54 1423151.44
0.06 951.01 50251.26 540914.57 94043.89 1012307.21 144230.77 1552528.85
0.07 1030.26 54438.86 585990.79 101880.88 1096666.14 156250.00 1681906.25
0.07 1109.51 58626.47 631067.00 109717.87 1181025.08 168269.23 1811283.65
0.08 1188.77 62814.07 676143.22 117554.86 1265384.01 180288.46 1940661.06
0.08 1268.02 67001.68 721219.43 125391.85 1349742.95 192307.69 2070038.46
0.09 1347.27 71189.28 766295.64 133228.84 1434101.88 204326.92 2199415.87
0.09 1426.52 75376.88 811371.86 141065.83 1518460.82 216346.15 2328793.27
0.10 1505.77 79564.49 856448.07 148902.82 1602819.75 228365.38 2458170.67
0.10 1585.02 83752.09 901524.29 156739.81 1687178.68 240384.62 2587548.08
0.15 2377.53 125628.14 1352286.43 235109.72 2530768.03 360576.92 3881322.12
0.20 3170.04 167504.19 1803048.58 313479.62 3374357.37 480769.23 5175096.15
0.25 3962.55 209380.23 2253810.72 391849.53 4217946.71 600961.54 6468870.19
0.30 4755.06 251256.28 2704572.86 470219.44 5061536.05 721153.85 7762644.23
0.35 5547.57 293132.33 3155335.01 548589.34 5905125.39 841346.15 9056418.27
0.40 6340.08 335008.38 3606097.15 626959.25 6748714.73 961538.46 10350192.31
0.45 7132.59 376884.42 4056859.30 705329.15 7592304.08 1081730.77 11643966.35
0.50 7925.10 418760.47 4507621.44 783699.06 8435893.42 1201923.08 12937740.38

Soil texture class and typical hydraulic conductivity values under saturated soil conditions derived from Rawls et al (1982) for all textures except silt, which is taken from Carsel & Parrish (1988).

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Creation Date: 04 July 2005
Last Reviewed: 16 August 2007