Salt Lake County Public Works Department Engineering Division #320 BIG COTTONWOOD CREEK @ CANYON MOUTH USGS #: 10168499 DAILY DISCHARGE IN CUBIC FEET PER SECOND WATER YEAR OCT 2002 TO SEP 2003 Day OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP ------------------------------------------------------------------------------------------------------------------------------------ 1 8.6 5.8 5.8 5.5 6.4 5.9 9.6 12 234 9.0 6.3 8.3 2 9.7 11 5.8 5.4 7.2 5.8 14 10 194 16 6.3 8.2 3 7.4 9.4 5.8 5.5 6.5 5.8 13 10 163 8.9 6.3 8.1 4 6.8 5.8 5.7 5.6 6.4 5.8 7.3 13 132 7.7 6.3 7.8 5 6.5 5.8 5.8 5.8 6.3 5.8 6.5 13 106 7.8 6.2 8.0 6 6.3 5.8 5.7 5.5 6.0 5.8 6.3 9.6 94 7.8 6.3 8.1 7 6.6 7.8 5.8 5.4 6.4 5.8 6.3 10 88 9.4 6.3 8.0 8 6.3 7.6 7.3 5.6 5.8 5.7 6.3 14 79 11 6.3 7.8 9 6.3 8.3 7.7 5.5 5.8 5.8 6.9 17 73 7.4 6.3 7.8 10 6.5 6.1 7.9 5.8 5.9 5.8 9.2 19 65 6.8 6.3 14 11 8.8 5.9 8.1 5.7 6.1 5.8 11 19 58 6.7 6.3 8.4 12 6.2 5.7 7.8 5.6 6.0 5.8 12 20 53 6.6 6.3 6.8 13 5.9 5.8 7.8 5.6 6.5 6.0 18 27 44 6.5 6.3 6.6 14 6.3 5.8 7.7 5.8 6.8 6.7 25 49 38 6.7 6.3 6.3 15 7.6 5.6 8.7 5.8 6.7 6.8 26 93 35 6.6 6.5 6.3 16 7.2 5.7 9.7 5.7 6.6 13 11 127 30 6.5 6.8 6.3 17 6.8 5.8 11 5.6 6.4 11 7.9 139 28 6.3 6.7 6.4 18 6.8 5.8 11 5.7 6.3 8.7 8.5 146 24 6.3 6.5 6.3 19 6.9 5.8 9.8 5.9 6.3 7.4 8.3 134 20 6.3 6.5 6.3 20 7.1 5.8 10 8.3 6.3 7.0 8.0 117 17 6.3 6.4 6.3 21 6.8 6.0 9.5 7.2 6.3 6.9 8.8 121 20 6.3 6.7 6.3 22 8.5 5.8 9.5 5.8 6.2 6.9 11 143 16 6.3 6.9 6.3 23 12 5.8 9.3 5.8 6.2 8.0 11 177 37 6.3 6.8 6.3 24 7.5 6.0 8.6 5.8 6.2 8.2 8.9 202 35 6.3 6.8 6.2 25 7.7 5.8 7.4 5.8 6.0 7.3 12 212 25 6.3 6.8 5.8 26 6.9 5.8 5.5 5.8 5.9 8.4 17 234 22 6.3 6.8 6.1 27 6.4 5.6 5.6 5.9 5.8 8.0 15 248 18 6.2 8.9 6.3 28 7.5 5.8 5.7 7.0 5.8 7.7 13 269 13 6.1 9.6 6.3 29 7.5 5.8 5.6 6.3 ------ 7.2 13 288 11 6.0 10 6.3 30 6.9 5.8 5.5 6.3 ------ 7.0 14 284 10 6.2 11 6.3 31 6.0 ------ 5.8 7.8 ------ 7.7 ------ 260 ------ 6.9 8.8 ------ TOTAL 224.3 189.3 232.9 184.8 175.1 219.5 344.8 3,436.6 1,782 225.8 216.6 214.3 MEAN 7.24 6.31 7.51 5.96 6.25 7.08 11.5 111 59.4 7.28 6.99 7.14 MAX 12 11 11 8.3 7.2 13 26 288 234 16 11 14 MIN 5.9 5.6 5.5 5.4 5.8 5.7 6.3 9.6 10 6.0 6.2 5.8 AC-FT 445 375 462 367 347 435 684 6,820 3,530 448 430 425 CAL YEAR 2002 TOTAL 9,486.90 MEAN 26.0 MAX 264 MIN 4.6 AC-FT 18,820 WTR YEAR 2003 TOTAL 7,446.00 MEAN 20.4 MAX 288 MIN 5.4 AC-FT 14,770