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USGS Daily Statistics for the Nation

The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 05595820 CASEY FORK AT MOUNT VERNON, IL


Jefferson County, Illinois
Hydrologic Unit Code 07140106
Latitude  38°17'12", Longitude  88°52'20" NAD83
Drainage area 76.9  square miles
Contributing drainage area 76.9  square miles
Gage datum 419.57 feet above NAVD88
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00060, Discharge, cubic feet per second,
Day of
month		 Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 1985-10-01 -> 2024-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 80 212 86 202 175 104 38 9.7 16 5.3 33 145
2 61 226 70 115 197 131 102 15 13 14 52 52
3 100 138 162 259 147 89 79 9.8 21 23 24 51
4 145 110 226 399 160 44 56 7.7 17 6.6 17 45
5 205 78 151 173 230 58 23 8.1 9.9 5.6 22 74
6 130 130 122 173 145 48 28 24 6.4 6.5 25 107
7 89 234 148 98 136 30 52 9 5.7 5.9 18 46
8 63 116 95 87 168 93 88 31 91 7.8 14 30
9 50 84 192 79 170 89 44 15 77 36 14 53
10 75 93 206 221 76 49 62 10 12 11 13 29
11 172 90 105 252 102 50 39 6.9 16 15 48 50
12 128 107 273 145 88 60 55 10 6.4 8.1 90 62
13 238 132 160 102 141 40 68 29 5.2 20 38 48
14 162 180 238 232 169 43 24 65 6.1 35 229 46
15 118 122 146 155 135 23 24 89 5.9 16 152 152
16 85 115 86 163 197 45 78 96 9.5 14 104 99
17 89 137 114 133 462 144 88 82 21 16 92 93
18 133 124 308 78 334 117 25 41 9.5 19 62 102
19 165 75 392 151 107 131 13 13 5.1 12 150 65
20 127 112 330 149 41 127 26 9.2 22 8.1 143 46
21 99 138 175 152 37 35 63 15 5.3 8.7 31 122
22 147 175 106 128 80 68 19 37 8.8 7.7 56 172
23 182 121 154 169 39 33 13 10 36 32 30 84
24 105 161 162 188 34 121 12 7.5 25 15 32 118
25 80 267 223 194 74 76 16 8.3 46 11 67 128
26 119 115 157 214 164 126 45 51 49 56 63 100
27 117 100 156 169 118 60 23 44 11 113 133 135
28 121 127 172 238 91 27 17 13 6.8 31 160 172
29 56 44 174 390 82 27 29 20 7.5 19 85 145
30 100   314 297 48 29 26 11 5 33 137 69
31 142   281   91   28 13   53   77