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<br />*TAYLOR SCHWARTZ EQUATION USED BY DOUGLAS COUNTY AND USGS TO CALCULATE LAG TIME FOR HEC-HMS <br />MODELS: T1ag= Ct * (L *Lca)o,3 WHERE Ct = 0.6/S0,5 <br /> <br />,. <br /> <br /> SUB-BASIN DATA VARIABLES USED IN 'TAYLOR SCHWARTZ EQUATION* TO <br /> CALCULATE LAG TIME <br />BASINI Total Slope Trag Using Kn Equation <br />AREA la Basin lea <br />SUBBASIN CN (Average) <br />10 (SQ MI) (IN) Length (FT) FT/FT Prebum Postburn Postburn in <br /> (FT) in Hours in Hours Minutes <br />4-MILE CREEK 8.35 <br />FB1 0.95 90.40 0.21 7744 4034 0.020 3,21 1.81 108.87 <br />FB2 1.75 90.40 0.21 14301 6951 0.020 4.73 2.67 160.13 <br />FB3 5.65 90.40 0.21 32265 9711 0.020 6.93 3.91 234.79 <br />HORSE CREEK 9.72 <br />HB1 6.06 73.26 0,18 36187 I 13982 0.020 I 8.13 4.59 275.46 <br />HB2 3.66 91.08 0.82 23943 12502 0.020 6.83 3.85 231.24 <br />WEST CREEK 69.32 <br />WB1 9.23 84.85 0.41 33392 12649 0.039 6.85 3.86 231,86 <br />WB2 4.00 87.03 0.33 18427 7498 0.045 4.61 2.60 156,12 <br />WB3 1.67 95.15 0.04 10269 4393 0.034 3.33 1.88 112.76 <br />WB4 10.45 82.16 0.50 43166 19489 0.029 9,07 5.12 307.09 <br />WB5 9.28 85.22 0.39 29891 12209 0.037 6.58 3.72 222.97 <br />WB6 4,62 83.00 0.47 17441 8431 0,041 4.77 2.69 161.58 <br />WB7 4.32 87.80 0,30 30636 11927 0.039 6.52 3.68 220,92 <br />WB8 8.39 61.38 1.25 37370 12499 0.026 7.58 7.58 454.82 <br />WB9 4.78 78.00 0.65 28584 13090 0.029 6.92 6.92 415.25 <br />WB10 6.13 58.00 1.37 21777 8548 0.022 5.75 5.75 345.10 <br />WB11 6.45 58.00 1.37 ' 26649 12033 0.029 6.57 6.57 394.43 <br />TROUT CREEK 135.04 <br />TB1 9.39 66.77 1.06 21522 10275 0.045 5,39 3,04 182.62 <br />TB2 4.82 66.47 1.07 20534 10194 0.039 5.42 3.06 183.48 <br />TB3 10.50 66.27 1.07 27396 12524 0,029 6.72 3.80 227.74 <br />TB4 7.05 72.90 0.84 31051 14666 0.027 7.47 4.22 253.12 <br />TB5 9.55 59.53 1.32 28299 13894 0.024 7.24 7.24 434.59 <br />TB6 9.08 63.50 1.17 29360 14035 0.037 6.86 ' 6.86 411,30 <br />TB7 6.71 63.50 1.17 31020 11222 0.030 6.72 3.79 227,58 <br />TB8 7.38 63.50 1.17 23454 8550 0.080 4.74 4.74 284.50 <br />TB9 6.08 63.50 1.17 20945 8696 0.090 4.50 4,50 270.23 <br />TB10 6,97 60.24 1.29 25963 9871 0,062 5.37 5.37 322.18 <br />TB11 10.74 60.34 1.29 28527 13644 0.052 6.35 6.35 380,71 <br />TB12 7.95 58.00 1.37 33929 14671 0.039 7.23 7.23 433.83 <br />TB13 6.15 58.00 1,37 22352 10003 0.039 5.54 5.54 332.25 <br />TB14 7.19 58.00 1.37 23497 8737 0,047 5.21 5.21 312.83 <br />TB15 2.45 58.00 1.37 23669 8454 0.040 5.31 5.31 318,67 <br />TB16 8.82 58.00 1.37 35169 16393 0.032 7.86 7.86 471.88 <br />TB17 8.14 58.00 1.37 21927 9986 0.027 5.85 5,85 351,28 <br />TB18 6.07 58.00 1.37 21586 10063 0.022 6.06 6.06 363.32 <br /> <br />BASIN CHARACTERISTICS <br />DOUGLAS COUNTY HAYMAN 'FIRE AREA, POST BURN CONDITION <br />