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 2001 TO SEP 2002 Day OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP ------------------------------------------------------------------------------------------------------------------------------------ 1 5.3 6.6 4.9 4.9 4.7 4.9 12 49 264 16 6.7 6.3 2 5.3 6.1 5.6 4.9 4.7 5.0 16 45 231 13 11 6.3 3 5.3 5.8 5.8 4.9 4.6 5.1 20 43 194 11 12 6.3 4 5.3 5.7 5.6 4.9 4.8 4.9 24 40 181 11 9.8 6.3 5 5.3 5.6 5.4 4.9 5.0 4.9 24 56 176 12 8.3 6.3 6 5.1 5.8 5.4 4.9 4.9 4.9 26 76 192 11 7.7 6.9 7 5.2 7.7 5.5 4.9 4.9 5.1 24 96 210 11 7.2 6.8 8 5.0 6.5 5.3 5.3 4.9 5.0 22 94 203 12 7.0 8.5 9 5.5 5.9 5.3 5.4 4.6 5.0 19 79 169 20 6.9 6.6 10 5.4 5.8 5.3 5.3 4.6 4.9 26 71 120 18 6.9 6.3 11 5.1 5.7 5.3 5.3 4.6 4.9 27 57 102 17 6.8 6.3 12 5.0 5.8 5.2 5.3 4.8 5.0 27 45 101 16 9.9 6.0 13 5.0 5.5 5.2 5.3 4.8 5.5 30 49 104 10 6.5 6.0 14 4.9 5.3 5.3 5.5 4.8 5.4 40 75 109 10 6.5 6.3 15 4.9 4.6 5.2 5.3 4.6 5.4 60 103 113 11 6.4 6.3 16 4.9 4.6 5.0 5.4 4.8 5.3 55 114 111 10 6.5 7.3 17 5.0 4.7 5.0 5.1 4.9 5.5 38 129 106 9.4 6.6 8.1 18 5.1 4.7 4.9 5.0 4.9 5.5 22 156 98 9.0 6.5 23 19 4.9 4.5 5.0 5.0 4.9 5.8 18 191 93 8.8 6.4 11 20 5.0 4.6 5.1 5.2 4.9 5.5 17 210 85 8.8 6.7 7.1 21 5.3 4.7 5.1 5.2 4.9 5.7 15 210 79 8.2 6.8 6.7 22 5.3 6.4 4.9 5.2 4.9 6.4 13 161 72 9.9 6.7 6.3 23 6.3 7.8 5.1 5.2 5.1 7.0 15 124 62 7.5 6.5 6.3 24 7.7 5.4 4.9 4.9 5.1 8.3 19 97 53 7.3 6.5 6.3 25 6.3 5.5 5.2 4.9 4.9 7.6 17 84 45 7.5 6.4 6.2 26 5.1 5.3 4.9 4.9 5.3 7.2 21 81 40 6.7 6.4 5.9 27 6.0 4.9 4.9 5.1 4.9 7.5 30 94 35 6.3 6.3 6.0 28 6.5 5.0 5.1 5.2 4.9 8.5 27 123 29 6.3 6.3 5.8 29 5.1 5.0 4.9 4.9 ------ 9.1 29 166 25 6.3 6.3 5.8 30 5.9 5.0 4.9 5.2 ------ 9.9 40 216 21 6.5 6.4 5.8 31 11 ------ 4.9 4.8 ------ 10 ------ 263 ------ 7.0 6.3 ------ TOTAL 173.0 166.5 160.1 158.2 135.7 190.7 773 3,397 3,423 324.5 223.2 215.1 MEAN 5.58 5.55 5.16 5.10 4.85 6.15 25.8 110 114 10.5 7.20 7.17 MAX 11 7.8 5.8 5.5 5.3 10 60 263 264 20 12 23 MIN 4.9 4.5 4.9 4.8 4.6 4.9 12 40 21 6.3 6.3 5.8 AC-FT 343 330 318 314 269 378 1,530 6,740 6,790 644 443 427 CAL YEAR 2001 TOTAL 7,647.40 MEAN 21.0 MAX 319 MIN 4.0 AC-FT 15,170 WTR YEAR 2002 TOTAL 9,340.00 MEAN 25.6 MAX 264 MIN 4.5 AC-FT 18,530