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USGS Daily Statistics for Illinois

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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 07020500 Mississippi River at Chester, IL


Randolph County, Illinois
Hydrologic Unit Code 07140105
Latitude  37°54'02.67", Longitude  89°49'48.76" NAD83
Drainage area 708,600  square miles
Gage datum 340.72 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 1941-10-01 -> 2022-09-30)

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
1 158,000 149,000 213,000 316,000 363,000 318,000 309,000 209,000 159,000 165,000 155,000 159,000
2 159,000 151,000 212,000 316,000 365,000 317,000 311,000 206,000 159,000 162,000 160,000 158,000
3 156,000 151,000 212,000 318,000 364,000 317,000 312,000 202,000 160,000 160,000 166,000 159,000
4 154,000 151,000 214,000 322,000 363,000 318,000 311,000 197,000 158,000 160,000 171,000 161,000
5 153,000 151,000 217,000 324,000 360,000 316,000 309,000 192,000 156,000 160,000 176,000 159,000
6 152,000 152,000 221,000 326,000 355,000 315,000 304,000 190,000 154,000 161,000 178,000 159,000
7 151,000 152,000 224,000 327,000 352,000 315,000 298,000 188,000 152,000 163,000 175,000 157,000
8 148,000 151,000 226,000 328,000 350,000 314,000 292,000 186,000 150,000 165,000 169,000 155,000
9 145,000 150,000 226,000 327,000 350,000 313,000 286,000 184,000 147,000 165,000 164,000 154,000
10 142,000 150,000 228,000 325,000 349,000 310,000 281,000 183,000 147,000 165,000 160,000 151,000
11 142,000 152,000 231,000 325,000 347,000 309,000 278,000 180,000 149,000 164,000 158,000 149,000
12 141,000 154,000 236,000 327,000 345,000 311,000 273,000 176,000 150,000 165,000 157,000 147,000
13 141,000 154,000 242,000 331,000 344,000 311,000 268,000 173,000 151,000 167,000 157,000 145,000
14 141,000 154,000 246,000 336,000 342,000 310,000 264,000 169,000 151,000 167,000 157,000 142,000
15 141,000 155,000 250,000 341,000 339,000 312,000 260,000 166,000 155,000 168,000 158,000 141,000
16 139,000 156,000 255,000 342,000 339,000 314,000 258,000 165,000 158,000 167,000 159,000 142,000
17 138,000 157,000 262,000 343,000 341,000 316,000 256,000 166,000 161,000 167,000 160,000 142,000
18 137,000 160,000 268,000 342,000 344,000 315,000 252,000 165,000 165,000 166,000 161,000 142,000
19 138,000 163,000 275,000 340,000 346,000 314,000 246,000 163,000 165,000 165,000 164,000 140,000
20 138,000 167,000 281,000 340,000 347,000 313,000 241,000 161,000 163,000 163,000 165,000 138,000
21 138,000 172,000 285,000 340,000 345,000 310,000 238,000 160,000 162,000 162,000 165,000 137,000
22 138,000 182,000 288,000 342,000 341,000 307,000 236,000 158,000 161,000 161,000 165,000 139,000
23 137,000 193,000 289,000 346,000 337,000 307,000 234,000 156,000 161,000 160,000 165,000 138,000
24 139,000 200,000 288,000 348,000 332,000 310,000 234,000 153,000 161,000 159,000 164,000 138,000
25 142,000 203,000 287,000 350,000 326,000 312,000 234,000 151,000 162,000 157,000 162,000 139,000
26 142,000 206,000 288,000 352,000 323,000 312,000 231,000 150,000 164,000 157,000 161,000 138,000
27 140,000 208,000 290,000 351,000 321,000 315,000 225,000 151,000 166,000 157,000 159,000 137,000
28 140,000 210,000 295,000 351,000 320,000 315,000 220,000 151,000 167,000 156,000 161,000 141,000
29 140,000 178,000 299,000 354,000 321,000 311,000 218,000 153,000 167,000 155,000 161,000 147,000
30 140,000   305,000 359,000 321,000 308,000 215,000 157,000 167,000 154,000 161,000 152,000
31 143,000   312,000   321,000   212,000 159,000   154,000   155,000