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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°54'02.7", Longitude  89°49'48.8" NAD83
Drainage area 708,600  square miles
Gage datum 340.73 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 -> 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
1 157,000 149,000 211,000 315,000 363,000 319,000 306,000 207,000 158,000 163,000 154,000 158,000
2 158,000 151,000 210,000 315,000 366,000 317,000 308,000 204,000 158,000 160,000 159,000 156,000
3 155,000 151,000 211,000 318,000 366,000 318,000 309,000 200,000 158,000 159,000 164,000 157,000
4 153,000 151,000 213,000 322,000 365,000 318,000 309,000 195,000 156,000 158,000 170,000 159,000
5 152,000 151,000 216,000 324,000 361,000 317,000 307,000 192,000 154,000 159,000 174,000 158,000
6 151,000 151,000 220,000 325,000 358,000 316,000 303,000 189,000 153,000 159,000 176,000 157,000
7 150,000 152,000 224,000 326,000 355,000 315,000 297,000 188,000 151,000 161,000 173,000 156,000
8 148,000 151,000 226,000 327,000 354,000 314,000 291,000 185,000 149,000 163,000 168,000 154,000
9 144,000 150,000 226,000 325,000 354,000 312,000 286,000 182,000 146,000 163,000 162,000 152,000
10 142,000 150,000 228,000 324,000 353,000 309,000 282,000 181,000 146,000 163,000 159,000 150,000
11 141,000 152,000 231,000 323,000 351,000 308,000 278,000 179,000 147,000 162,000 157,000 147,000
12 140,000 154,000 235,000 325,000 348,000 310,000 274,000 175,000 149,000 163,000 156,000 146,000
13 140,000 154,000 240,000 329,000 347,000 311,000 269,000 172,000 149,000 165,000 155,000 143,000
14 140,000 155,000 244,000 334,000 344,000 309,000 264,000 168,000 150,000 165,000 156,000 141,000
15 140,000 156,000 247,000 338,000 341,000 310,000 260,000 165,000 154,000 166,000 157,000 140,000
16 138,000 157,000 253,000 340,000 341,000 312,000 258,000 164,000 156,000 165,000 158,000 140,000
17 136,000 158,000 259,000 341,000 342,000 313,000 256,000 165,000 159,000 165,000 158,000 141,000
18 136,000 160,000 265,000 339,000 346,000 312,000 252,000 164,000 163,000 165,000 159,000 141,000
19 137,000 163,000 272,000 337,000 347,000 311,000 246,000 162,000 163,000 163,000 162,000 139,000
20 137,000 166,000 277,000 337,000 348,000 310,000 241,000 160,000 161,000 161,000 163,000 137,000
21 137,000 171,000 281,000 338,000 345,000 307,000 239,000 159,000 160,000 160,000 163,000 137,000
22 137,000 181,000 284,000 340,000 341,000 304,000 236,000 157,000 160,000 159,000 163,000 138,000
23 136,000 192,000 285,000 343,000 338,000 304,000 233,000 155,000 159,000 158,000 163,000 137,000
24 138,000 200,000 285,000 346,000 332,000 307,000 232,000 152,000 160,000 157,000 162,000 137,000
25 141,000 203,000 285,000 347,000 326,000 308,000 231,000 150,000 161,000 156,000 161,000 138,000
26 142,000 205,000 287,000 349,000 323,000 309,000 228,000 149,000 162,000 155,000 159,000 136,000
27 141,000 207,000 290,000 349,000 321,000 311,000 223,000 149,000 164,000 156,000 158,000 136,000
28 141,000 208,000 294,000 349,000 321,000 311,000 219,000 149,000 165,000 155,000 159,000 140,000
29 140,000 175,000 298,000 352,000 321,000 308,000 216,000 152,000 165,000 154,000 160,000 145,000
30 141,000   304,000 358,000 321,000 304,000 213,000 155,000 166,000 153,000 159,000 150,000
31 144,000   311,000   321,000   210,000 157,000   153,000   154,000