Illinois Low Flow-Frequency Estimates of the 7 Day Low Flow For a 10 Year Recurrence (7DayQ10)
[Ft3/s, cubic feet per second; mi2, square miles; Ft3/s/mi2, cubic feet per second per square mile]
[Stations are located in Illinois unless otherwise indicated.]
Allen & Cowan Singh et al Singh et al Singh et al
Lara (1970) Singh(1973) Singh(1983) (1984) (1988a) (1988b) (1993)
Drainage Lara (1970) 7DayQ10 7DayQ10 7DayQ10 7DayQ10 7DayQ10 7DayQ10 7DayQ10
Station Number Station Name (mi2) 7Q10 (Ft3/s) (Ft3/s) (Ft3/s) (Ft3/s) (Ft3/s) (Ft3/s) (Ft3/s)
                   
3336000 Wabash River at Covington, IN 8,218.00   723.0       756.00  
3336500 Bluegrass Creek at Potomac 35.00 0 0.0 0.0       0.00  
3336645 Middle Fork Vermilion River Above Oakwood 432.00              
3336900 Salt Fork near St. Joseph 134.00   3.6       4.10  
3337000 Boneyard Creek at Urbana 4.46 0.17 0.8 0.7       0.56  
3337500 Saline Branch at Urbana 68.00 0.02 1.4 1.0       2.40  
3338000 Salt Fork near Homer 340.00 0.023 7.8 13.5       22.70  
3338500 Vermilion River near Catlin 9.58 0.012 0.1 19.0       30.20  
3339000 Vermilion River near Danville 1,279.00 0.0115 14.7 33.0       42.20  
3339150 Little Vermilion River near Newport, IN 240.00   0.0       0.00  
3340500 Wabash River at Montezuma, IN 11,118.00   886.0       895.00  
3341420 Brouilletts Creek near Universal, IN 331.00   1.1       1.10  
3341500 Wabash River at Terre Haute, IN 12,265.00   1,008.0       1,040.00  
3342000 Wabash River at Riverton, IN 13,161.00   1,249.0       1,274.00  
3343000 Wabash River at Vincennes, IN 13,706.00   1,326.0       1,337.00  
3343400 Embarras River near Camargo 186.00   0.0       0.51  
3344000 Embarras River near Diona 919.00   3.2       4.90  
3344500 Range Creek near Casey 7.60 0 0.0 0.0       0.00  
3345000 Embrass River near Newton 1,392.00   13.2       13.20  
3345500 Embarras River at Ste. Marie 1,516.00 0.0085 12.9 16.6       16.60  
3346000 North Fork Embarras River near Oblong 318.00 0.00045 0.1 0.0       0.17  
3346500 Embrass River at Lawrenceville 2,333.00   35.0       35.30  
3377500 Wabash River at Mount Carmel 28,635.00   2,490.0       2,504.00  
3378000 Bonpas Creek at Browns 228.00 0 0.0 0.0       0.00  
3378500 Wabash River at New Harmony, IN 29,234.00   2,620.0       2,634.00  
3378635 Little Wabash River near Effingham 240.00   0.0       0.00  
3378900 Little Wabash River at Louisville 745.00   0.0       0.60  
3379500 Little Wabash River below Clay City 1,131.00 0.0005 0.6 0.5       1.40  
3380350 Skillet Fork near Iuka 208.00   0.0       0.00  
3380475 Horse Creek near Keenes 97.20   0.0       0.00  
3380500 Skillet Fork at Wayne City 464.00 0 0.0 0.0       0.05  
3381500 Little Wabash River at Carmi 3,102.00 0.00043 1.3 5.7       6.80  
3382000 Middle Fork Saline River near Harrisburg 198.00   1.1       0.65  
3382100 South Fork Saline River near Carrier Mills 147.00   0.5       2.30  
3382170 Brush Creek near Harco 13.30   0.0       0.00  
3382350 North Fork Saline River near Ridgeway 423.00   0.0       0.00  
3382500 Saline River near Junction 1,051.00   2.4       4.20  
3382510 Eagle Creek near Equality 8.51   0.0       0.00  
3384450 Lusk Creek near Eddyville 42.90   0.0       0.00  
3384500 Ohio River at Golconda 143,900.00   12,610.0       14,610.00  
3385000 Hayes Creek at Glendale 19.10 0 0.0 0.0       0.00  
3385500 Lake Glendale Inlet near Dixon Springs 1.05   0.0       0.00  
3386000 Lake Glendale Outlet near Dixon Springs 1.98   0.0       0.00  
3386500 Sugar Creek near Dixon Springs 9.93 0 0.0 0.0       0.00  
3611500 Ohio River at Metropolis 203,000.00   44,820.0       53,820.00  
3612000 Cache River at Forman 244.00 0 0.0 0.0       0.00  
5414820 Sinsinawa River near Menominee 39.60         5.00    
5415000 Galena River at Buncombe, WI 125.00   11.7     14.00    
5415500 East Fork Galena River at Council Hill 17.60   2.3     2.30    
5419000 Apple River near Hanover 247.00 0.06 14.8 20.1     20.10    
5420000 Plum River below Carroll Creek near Savanna 230.00 0.038 8.7 10.7     11.20    
5420500 Mississippi River at Clinton, IA 85,600.00   13,970.0     13,990.00    
5434500 Pecatonica River at Martintown, WI 1,034.00   153.0     153.00    
5435000 Cedar Creek near Winslow 1.31   0.0     0.00    
5435500 Pecatonica River at Freeport 1,326.00 0.14 185.6 181.0     181.00    
5437000 Pecatonica River at Shirland 2,550.00 0.155 395.3 393.0     408.00    
5437500 Rock River at Rockton 6,363.00 0.125 795.4 795.0     859.00    
5437695 Keith Creek at Eighth St. at Rockford 13.40         0.30    
5437950 Kishwaukee River near Huntley 14.40       1.30      
5438050 North Branch Kishwaukee River near Harvard 21.10       0.14      
5438100 Kishwaukee River near Marengo 89.70       7.20      
5438150 S. Branch Kishwaukee River (E.) below Union 73.50       1.40      
5438192 Rush Creek near Garden Prairie 29.50       2.00      
5438201 Kishwaukee River at Garden Prairie 222.00       14.00      
5438215 Coon Creek at New Lebanon 16.30       0.14      
5438230 Burlington Creek near Hampshire 15.20       0.11      
5438250 Coon Creek at Riley 85.10   2.6   3.00 2.50    
5438320 Piscasaw Creek at Chemung 52.90       4.50      
5438400 Piscasaw Creek near Capron 90.70       10.00      
5438430 Piscasaw Creek near Belvidere 128.00       11.00      
5438500 Kishwaukee River at Belvidere 538.00 0.0615 33.1 34.3   36.00 35.60    
5438550 Beaver Creek near Poplar Grove 26.10       1.30      
5438575 Beaver Creek near Belvidere 64.20       2.00      
5438600 Kishwaukee River above S. Branch nr. Perryville 655.00       47.00      
5439000 South Branch Kishwaukee River at Dekalb 77.70 0.000275 0.0 0.1   0.07 0.20    
5439130 Virgil ditch No. 3 at Virgil 25.70       0.15      
5439200 Union Drainage ditch No. 3 near Maple Park 58.00       0.84      
5439300 E. Branch of S. Branch Kishwaukee River at Sycamore 107.00       2.10      
5439350 S. Branch Kishwaukee River at Genoa 249.00       9.70      
5439450 Owens Creek near Kirkland 44.50       0.09      
5439500 South Branch Kishwaukee River near Fairdale 387.00 0.017 6.6 9.9   11.00 12.70    
5440000 Kishwaukee River near Perryville 1,099.00 0.0525 57.7 62.3   71.00 69.10    
5440400 E. Branch Killbuck Creek near Creston 31.40       0.08      
5440500 Killbuck Creeknear Monroe Center 117.00 0.026 3.0 3.1   3.00 3.10    
5440520 Killbuck Creek near New Milford 136.00       5.60      
5441000 Leaf River at Leaf River 103.00 0.105 10.8 8.4     8.60    
5441500 Rock River at Oregon 8,203.00 0.135 1107.4 1,100.0     1,148.00    
5442000 Kyte River near Flagg Center 116.00 0 0.0 3.3     6.00    
5443500 Rock River at Como 8,753.00 0.15 1313.0 1,097.0     1,167.00    
5444000 Elkhorn Creek near Penrose 146.00 0.0925 13.5 15.5     15.00    
5445500 Rock Creek near Morrison 158.00 0.086 13.6 13.6     14.00    
5446500 Rock River near Joslin 9,520.00 0.12 1142.4 1,306.0     1,376.00    
5447000 Green River at Amboy 201.00 0.021 4.2 4.9     5.90    
5447500 Green River near Geneseo 1,003.00 0.0375 37.6 49.2     50.00    
5448000 Mill Creek at Milan 62.40 0.0021 0.1 0.1     0.30    
5466000 Edwards River near Orion 155.00 0.011 1.7 1.7     1.80    
5466500 Edwards River near New Boston 445.00 0.016 7.1 6.8     6.90    
5467000 Pope Creek near Keithsburg 174.00 0.012 2.1 1.9     2.00    
5467500 Henderson Creek near Little York 151.00 0.00017 0.0 0.0     0.03    
5468000 North Henderson Creek near Seaton 67.10 0.0022 0.1 0.0     0.00    
5468500 Cedar Creek at Little York 130.00 0.014 1.8 7.4     7.70    
5469000 Henderson Creek near Oquawka 432.00 0.0063 2.7 7.8     8.10    
5469500 South Henderson Creek at Biggsville 82.90 0 0.0 0.0     0.00    
5474500 Mississippi River at Keokuk 119,000.00   15,170.0     15,260.00    
5495500 Bear Creek near Marcelline 349.00 0 0.0 0.0     0.05    
5502020 Hadley Creek near Barry 40.90   0.0     0.00    
5502040 Hadley Creek at Kinderhook 72.70 0 0.0 0.0     0.00    
5512500 Bay Creek at Pittsfield 39.40 0.00021 0.0 0.0     0.00    
5513000 Bay Creek at Nebo 161.00 0.0003 0.0 0.0     0.20    
5519500 West Creek near Schneider, IN 54.70   4.4       6.30  
5520000 Singleton Ditch at Illinoi 220.00   12.7       21.70  
5520500 Kankakee River at Momence 2,294.00 0.016 36.7 411.0       426.00  
5525000 Iroquois River at Iroquois 686.00 0.021 14.4 9.1       15.00  
5525500 Sugar Creek at Milford 446.00 0.009 4.0 3.5       3.60  
5526000 Iroquois River near Chebanse 2,091.00 0.01 20.9 16.6       30.00  
5526500 Terry Creek near Custer Park 12.10 0 0.0 0.0       0.03  
5527500 Kankakee River near Wilmington 5,150.00 0.08 412.0 451.0 480.00     480.00 496.00
5527800 Des Plaines River at Russell 123.00   0.0 0.20       0.40
5528000 Des Plaines River near Gurnee 232.00 0 0.0 0.1 32.00       37.00
5528500 Buffalo Creek near Wheeling 19.60   0.2 0.00       0.30
5529000 Des Plaines River near Des Plaines 360.00 0.05 18.0 4.3 40.90       55.00
5529500 Mc Donald Creek near Mount Prospect 7.90   0.0 0.00       0.00
5530000 Weller Creek at Des Plaines 13.20 0.085 1.1 0.0 0.00       0.10
5530500 Willow Creek near Park Ridge 19.70 0.0014 0.0 0.0 31.00       40.00
5530990 Salt Creek at Rolling Meadows 30.50             0.20
5531500 Salt Creek at Western Springs 114.00 0 0.0 14.9 36.00       38.00
5532000 Addison Creek at Bellwood 17.90   1.8 2.90       2.20
5532500 Des Plaines River at Riverside 630.00 0.005 3.2 18.4 113.00       139.00
5533000 Flag Creek near Willow Springs 16.50   2.5 7.40       9.00
5534500 North Branch Chicago River at Deerfield 19.70   0.0 0.00       0.30
5535000 Skokie River at Lake Forest 13.00   1.3 0.30       0.40
5535070 Skokie River near Highland Park 21.10   1.3 0.60       0.70
5535500 West Fk Of N Br Chicago River at Northbrook 11.50   1.4 2.20       2.70
5536000 North Branch Chicago River at Niles 100.00 0.01 1.0 7.6 16.50       17.00
5536105 Nb Chicago River at Albany Avenue at Chicago 113.00              
5536195 Little Calumet River at Munster Lansing STP 90.00   5.7 5.70       6.90
5536210 Thorn Creek near Chicago Heights 17.20   0.5 0.30       0.30
5536215 Thorn Creek at Glenwood 24.70 0.34 8.4 14.0 14.00       16.00
5536235 Deer Creek near Chicago Heights 23.10 0.0034 0.1 3.0 0.30       0.23
5536255 Butterfield Creek at Flossmoor 23.50 0.0028 0.1 1.0 0.00       0.00
5536265 Lansing Ditch near Lansing 8.80 0.0056 0.0 0.0 0.20       0.20
5536270 North Creek near Lansing 16.80 0.0018 0.0 0.1 1.00       1.40
5536275 Thorn Creek at Thornton 104.00 0.073 7.6 21.3 19.60       20.50
5536290 Little Calumet River at South Holland 205.00 10.3 2111.5 34.0 31.60       29.00
5536340 Midlothian Creek at Oak Forest 12.60 0.0025 0.0 0.0 0.00       0.25
5536500 Tinley Creek near Palos Park 11.20   0.0 0.00       0.00
5536995 Chicago Sanitary & Ship Canal at Romeoville 739.00              
5537000 Chicago Sanitary & Ship Canal at Lockport 739.00   1,700.0 1,700.00       1,755.00
5537500 Long Run near Lemont 20.90   0.0 0.30       0.40
5539000 Hickory Creek at Joliet 107.00 0.028 3.0 1.9 3.00       4.00
5539900 West Branch Du Page River near West Chicago 28.50   3.2 10.40       9.00
5540060 Kress Creek at West Chicago 18.10              
5540091 Spring Brook at Forest Preserve near Warrenville 6.83              
5540095 West Branch Du Page River near Warrenville 90.40   13.6 23.00       20.00
5540130 West Branch Du Page River near Naperville 123.00              
5540160 East Branch Du Page River near Downers Grove 26.60              
5540195 St. Joseph Creek at Route 34 at Lisle 11.10              
5540250 East Branch Du Page River at Bolingbrook 75.80              
5540275 Spring Brook at 87th Street near Naperville 9.90              
5540500 Du Page River at Shorewood 324.00 0.051 16.5 45.0 78.00       87.00
5542000 Mazon River near Coal City 455.00 0 0.0 0.0       0.20  
5543500 Illinois River at Marseilles 8,259.00   3,240.0 3,200.00     3,180.00 3,185.00
5546500 Fox River at Wilmot 868.00   62.0 67.00       73.00
5547350 Grass Lake Outlet at Lotus Woods 919.00              
5547755 Squaw Creek at Round Lake 17.20              
5548280 Nippersink Creek near Spring Grove 192.00   18.6 21.60       21.60
5548500 Fox River at Johnsburg 1,205.00              
5549000 Boone Creek near McHenry 15.50 0.25 3.9 3.7 3.70       3.70
5550000 Fox River at Algonquin 1,403.00 0.033 46.3 51.0         115.00
5550500 Poplar Creek at Elgin 35.20   1.0 0.50       0.50
5551000 Fox River at South Elgin 1,556.00              
5551200 Ferson Creek near St. Charles 51.70   0.2 0.36       1.00
5551700 Blackberry Creek near Yorkville 70.20   2.5 3.40       4.50
5552500 Fox River at Dayton 2,642.00 0.063 166.4 198.0 236.00       260.00
5554000 N Fork Vermilion R. near Charlotte 186.00 0 0.0 0.0       0.00  
5554500 Vermilion River at Pontiac 579.00 0.0003 0.2 0.2       1.20  
5555300 Vermilion River near Leonore 1,251.00              
5555500 Vermilion River at Lowell 1,278.00 0.0065 8.3 7.3       6.60  
5556500 Big Bureau Creek at Princeton 196.00 0.0018 0.4 0.9     0.90    
5557000 West Bureau Creek at Wyanet 86.70 0 0.0 0.0     0.00    
5557500 East Bureau Creek near Bureau 99.00 0 0.0 0.0     0.00    
5558000 Bureau Creek at Bureau 485.00 0.04 19.4 16.9     31.00    
5558500 Crow Creek near Henry 56.20 0.00025 0.0 0.0     0.00    
5559000 Gimlet Creek at Sparland 5.70 0.00039 0.0 0.0     0.00    
5559500 Crow Creek near Washburn 115.00   0.0       0.00  
5560500 Farm Creek at Farmdale 27.40 0.00022 0.0 0.0       0.00  
5561000 Ackerman Creek at Farmdale 11.20   0.0       0.00  
5561500 Fondulac Creek near East Peoria 5.54   0.0       0.00  
5562000 Farm Creek at East Peoria 61.20 0.00011 0.0 0.0       0.00  
5563000 Kickapoo Creek at Kickapoo 119.00 0.0073 0.9 0.5     0.53    
5563500 Kickapoo Creek at Peoria 297.00 0.01 3.0 1.0     1.10    
5564400 Money Creek near Towanda 49.00   0.0       0.00  
5564500 Money Creek above Lake Bloomington 53.10 0 0.0 0.0       0.00  
5565000 Hickory Creek above Lake Bloomington 9.81 0 0.0 0.0       0.00  
5566000 East Branch Panther Creek near Gridley 6.30 0 0.0 0.0       0.00  
5566500 East Branch Panther Creek at El Paso 30.50 0 0.0 0.0       0.00  
5567000 Panther Creek nearEl Paso 93.90 0.0005 0.0 0.0       0.00  
5567500 Mackinaw River near Congerville 767.00 0.0043 3.3 0.5       1.20  
5568000 Mackinaw River near Green Valley 1,089.00 0.021 22.9 25.2       25.20  
5568500 Illinois River at Kingston Mines 15,819.00 0.015 237.3 3,000.0     3,050.00 3,050.00  
5568800 Indian Creek near Wyoming 62.70   0.1     0.20    
5569500 Spoon River at London Mills 1,072.00   9.8     10.40    
5570000 Spoon River at Seville 1,636.00 0.012 19.6 19.0     22.00    
5570910 Sangamon River at Fisher 240.00           0.03  
5571000 Sangamon River near Mahomet 362.00 0.0023 0.8 0.4       0.45  
5571500 Goose Creek near DeLand 47.90   0.0       0.00  
5572000 Sangamon River at Monticello 550.00 0.0048 2.6 2.1       1.90  
5572450 Friends Creek at Argenta 111.00   0.0       0.00  
5572500 Sangamon River near Oakley 774.00           5.80  
5573540 Sangamon River at Route 48 at Decatur 938.00              
5574000 South Fork Sangamon River near Nokomis 11.00   0.0       0.00  
5574500 Flat Branch near Taylorville 276.00 0 0.0 0.0       0.00  
5575500 South Fork Sangamon River at Kincaid 562.00 0.00044 0.2 0.8       1.50  
5575800 Horse Creek at Pawnee 52.20   0.0       0.00  
5576000 South Fork Sangamon River near Rochester 867.00 0.00035 0.3 0.8       0.89  
5576500 Sangamon River at Riverton 2,618.00 0.0075 19.6 37.2       59.50  
5577500 Spring Creek at Springfield 107.00 0 0.0 0.0       0.00  
5578500 Salt Creek near Rowell 335.00 0.0088 2.9 2.2       6.40  
5579500 Lake Fork near Cornland 214.00 0.0087 1.9 2.0       2.40  
5580000 Kickapoo Creek at Waynesville 227.00 0.0029 0.7 0.5       1.20  
5580500 Kickapoo Creek near Lincoln 306.00 0.0085 2.6 2.5       3.20  
5580950 Sugar Creek near Bloomington 34.40           15.60  
5581500 Sugar Creek near Hartsburg 333.00 0.02 6.7 11.9       15.70  
5582000 Salt Creek near Greenview 1,804.00 0.035 63.1 68.6       86.00  
5582500 Crane Creek near Easton 26.50 0 0.0 0.9       0.89  
5583000 Sangamon River near Oakford 5,093.00 0.027 137.5 206.0       238.00  
5584400 Drowning Fork at Bushnell 26.30   0.0     0.00    
5584500 La Moine River at Colmar 655.00 0.0025 1.6 0.8     2.00    
5585000 La Moine River at Ripley 1,293.00 0.008 10.3 9.0     11.00    
5585500 Illinois River at Meredosia 26,028.00   3,500.0     3,700.00    
5586000 N Fork Mauvaise Terre Creek near Jacksonville 29.10   0.0     0.00    
5586100 Illinois River at Valley City 26,743.00              
5586500 Hurricane Creek near Roodhouse 2.30   0.0     0.00    
5586800 Otter Creek near Palmyra 61.10   0.0     0.00    
5587000 Macoupin Creek near Kane 868.00 0.0011 1.0 2.0     2.40    
5587060 Illinois River at Hardin 28,690.00              
5587500 Mississippi River at Alton 171,500.00   21,470.0     21,490.00    
5587900 Cahokia Creek at Edwardsville 212.00         0.47    
5588000 Indian Creek at Wanda 36.70 0.0035 0.1 0.0     0.00    
5589500 Canteen Creek at Caseyville 22.60   0.1     0.00    
5590000 Kaskaskia Ditch at Bondville 12.40 0.0025 0.0 0.1     0.05    
5590400 Kaskaskia River near Pesotum 109.00         13.00    
5590800 Lake Fork at Atwood 149.00         0.00    
5591200 Kaskaskia River at Cooks Mills 473.00         10.30    
5591500 Asa Creek at Sullivan 8.05 0 0.0 0.0     0.00    
5591550 Whitley Creek near Allenville 34.60         0.00    
5591700 West Okaw River near Lovington 112.00         0.00    
5592000 Kaskaskia River at Shelbyville 1,054.00 0.0002 0.2 10.0     10.00    
5592050 Robinson Creek near Shelbyville 93.10         0.00    
5592100 Kaskaskia River near Cowden 1,330.00         17.00    
5592300 Wolf Creek near Beecher City 47.90   0.0     0.00    
5592500 Kaskaskia River at Vandalia 1,940.00 0.0075 14.6 25.7     39.00    
5592800 Hurricane Creek near Mulberry Grove 152.00         0.20    
5592900 Ef Kaskaskia River near Sandoval (Fairman) 113.00         0.00    
5593000 Kaskaskia River at Carlyle 2,719.00 0.0008 2.2 50.0     50.00    
5593520 Crooked Creek near Hoffman 254.00         2.00    
5593575 Little Crooked Creek near New Minden 84.30   0.0     0.00    
5593600 Blue Grass Creek near Raymond 17.30   0.0     0.00    
5593900 East Fork Shoal Creek near Coffeen 55.50   0.0     0.00    
5594000 Shoal Creek near Breese 735.00 0.0029 2.1 0.2     1.90    
5594090 Sugar Creek at Albers 124.00         0.21    
5594100 Kaskaskia River near Venedy Station 4,393.00         68.00    
5594330 Mud Creek near Marissa 72.40         0.00    
5594450 Silver Creek near Troy 154.00   0.0     0.10    
5594800 Silver Creek near Freeburg 464.00         1.00    
5595000 Kaskaskia River at New Athens 5,181.00 0.0013 6.7 93.0     99.00    
5595200 Richland Creek near Hecker 129.00         5.00    
5595270 Plum Creek Tributary near Tilden 0.59         0.00    
5595500 Marys River near Sparta 17.80 0 0.0         0.00  
5595730 Rayse Creek near Waltonville 88.00              
5595800 Sevenmile Creek near Mt. Vernon 21.10   0.0       0.00  
5595820 Casey Fork at Mt. Vernon 76.90              
5596000 Big Muddy River near Benton 502.00 0.00025 0.1 30.6       32.00  
5596500 Tilley Creek near West Frankfort 3.87   0.0       0.00  
5597000 Big Muddy River at Plumfield 753.00 0 0.0 31.0       37.00  
5597500 Crab Orchard Creek near Marion 31.70   0.0       0.00  
5598500 Beaucoup Creek near Pinckneyville 231.00   0.0       0.00  
5599000 Beaucoup Creek near Matthews 292.00 0 0.0 0.0       0.00  
5599500 Big Muddy River at Murphysboro (BASE) 2,170.00   35.2       55.00  
5600000 Big Creek near Wetaug 32.20   0.0       0.00  
7010000 Mississippi River at St. Louis, MO 697,000.00   45,970.0     46,500.00    
7020500 Mississippi River at Chester 708,600.00   46,840.0     47,600.00 47,600.00  
7022000 Mississippi River at Thebes 713,200.00     47,810.0       48,610.00