Provisional Monthly Streamflow Network - Data Details, Illinois State Water Survey

Water and Atmospheric Resources Monitoring Program (WARM)

Weather Soil Groundwater Sediment Streamflow Reservoirs

Provisional Monthly Streamflow Network - Tabular Data: August 2024

     Choose another month

 

Long-term monthly flows for period of record (cfs)

Station Drainage area
(sq. mi.)
Years of record Monthly mean flow (cfs) Mean flow* Median (50% exceedence) flow 90% exceedence flow 10% exceedence flow USGS
Station No.
 Rock River at Rockton

6,363

85

6,816

3,323

2,914

1,280

5,564

5437500

 Rock River near Joslin

9,549

85

10,140

5,044

4,217

2,057

9,290

5446500

 Pecatonica River at Freeport

1,326

110

1,336

806

672

332

1,695

5435500

 Green River near Geneseo

1,003

88

312

397

259

99

1,073

5447500

 Edwards River near New Boston

445

90

75

156

84

20

422

5466500

 Kankakee River at Momence

2,294

109

1,259

1,150

942

617

1,940

5520500

 Iroquois River near Chebanse

2,091

101

213

501

240

64

1,325

5526000

 Fox River at Dayton

2,642

110

1,454

1,061

734

303

2,080

5552500

 Vermilion River at Pontiac

579

82

17

128

34

8

348

5554500

 Spoon River at Seville

1,636

110

558

495

304

80

965

5570000

 LaMoine River at Ripley

1,293

103

343

338

189

35

971

5585000

 Bear Creek near Marcelline

349

80

114

94

51

1

294

5495500

 Mackinaw River near Congerville

767

80

46

162

62

13

398

5567500

 Salt Creek near Greenview

1,804

83

732

616

363

163

1,226

5582000

 Sangamon River at Monticello

550

115

52

144

49

12

463

5572000

 So. Fork Sangamon near Rochester

867

75

156

212

68

6

512

5576000

 Illinois River at Valley City

26,743

86

11,454

13,691

11,930

7,619

22,380

5586100

 Macoupin Creek near Kane

868

96

46

206

76

14

535

5587000

 Vermilion River near Danville

1,290

103

304

390

174

51

1,001

3339000

 Kaskaskia River at Vandalia

1,940

55

690

955

894

103

2,168

5592500

 Shoal Creek near Breese

735

83

152

217

77

17

664

5594000

 Embarras River at Ste. Marie

1,516

113

180

418

188

61

924

3345500

 Skillet Fork at Wayne City

464

108

456

148

25

1

483

3380500

 Little Wabash below Clay City

1,131

110

349

398

117

16

1,218

3379500

 Big Muddy at Plumfield

794

54

487

303

226

56

660

5597000

 Cache River at Forman

244

102

17

71

24

4

196

3612000



Choose another month

Station Numbers are linked to the U.S. Geological Survey, providing more information about each station.

Notes:
Much below normal flow = 90-100% chance of exceedence.
Below normal flow = 70-90% chance of exceedence.
Normal flow = 30-70% chance of exceedence.
Above normal flow = 10-30% chance of exceedence.
Much above normal flow = 0-10% chance of exceedence.
* As reported in U.S. Geological Survey (USGS) Water Resources Data, Illinois, Water Year 2022.

For best results when printing this page, change your layout to "Landscape".

Streamflow Data



Illinois State Water Survey

2204 Griffith Dr., MC-674
Champaign, IL 61820-7463
217-244-5459
Email us with questions or comments.

 

© 2022 University of Illinois Board of Trustees. All rights reserved.
For permissions information, contact the Illinois State Water Survey.
Terms of use | Privacy Policy | Web Administrator.