Station list     Available data
ROCK RIVER BASIN


05447500       GREEN RIVER NEAR GENESEO, IL

 

LOCATION.-- Lat 41°29'20", long 90°09'27" (NAD of 1927), in NE1/4SW1/4 sec.4, T.17 N., R.3 E., Henry County, Hydrologic Unit 07090007, on right bank at upstream side of bridge on State Highway 82, 1.4 mi upstream from Geneseo Creek, 2.4 mi north of Geneseo, and at mile 14.9.

 

DRAINAGE AREA.-- 1,003 mi2.

 

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

 

DISCHARGE: March 1936 to current year.

 

STAGE: Water years 1994 to current year.

SURFACE-WATER QUALITY

 

SEDIMENT: March 1978 to September 1981.

 

CHEMICAL: Water years 1978-91.

 

REVISED RECORDS.-- WSP 875: 1938. WSP 1508: 1937, 1939-41(M), 1946(P), 1947-49. WDR IL-74-1: Drainage area.

 

GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter and crest-stage gage. Datum of gage is 577.66 ft above NGVD of 1929 (levels by U.S. Army Corps of Engineers). Prior to Oct. 1, 1939, nonrecording gage at present site at datum 27.00 ft. lower. Oct. 1, 1939 to Apr. 3, 1940, nonrecording gage at present site at datum 3.0 ft. higher. Apr. 3, 1940 to Sept. 30, 1997, recording gage at present site at datum 3.0 ft. higher.

 

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 12,100 ft3/s, June 22, 1974, gage height, 19.75 ft, present datum; maximum gage height, 21.59 ft, present datum, Jan. 23, 1969, ice jam; minimum daily discharge, 22 ft3/s, Jan. 18, 1977.

SUSPENDED-SEDIMENT CONCENTRATION: Maximum daily mean, 8,620 mg/L Apr. 14, 1981; minimum daily mean, 17 mg/L Jan. 15, 16, 1979.

SUSPENDED-SEDIMENT LOADS: Maximum daily, 132,000 tons Apr. 14, 1981; minimum daily, 7.3 tons Jan. 15, 16, 1979.

 

REMARKS FOR CURRENT YEAR.-- Records good except those for May 24 - June 27, which are fair, and those for estimated daily discharges, which are poor.

Discharge, cubic feet per second, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
DAILY MEAN VALUES
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
1133 162 e140 150 e90 e110 166 3670 456 222 178 93 
2157 156 e150 159 e100 e100 160 2430 457 208 203 105 
3161 158 e130 135 e110 e98 153 1260 450 202 181 90 
4180 161 e125 120 e120 e96 164 932 444 191 310 83 
5224 166 e120 e150 e140 e110 198 2960 428 186 195 78 
 
6191 164 e130 e140 e125 e107 205 1950 417 180 170 75 
7174 164 e120 e130 e115 e103 196 1280 437 202 161 72 
8161 160 e117 e140 e105 e100 192 993 409 328 145 71 
9164 161 e113 e130 e95 e100 187 3380 428 736 137 70 
10166 162 e110 e120 e90 e105 175 3030 414 825 128 68 
 
11160 163 e110 e130 e86 e115 169 3100 428 649 123 68 
12157 158 e113 e150 e83 e140 160 2890 399 501 144 71 
13154 157 e120 e130 e80 e340 153 1860 383 417 137 81 
14163 159 e130 e115 e79 318 146 1330 370 360 123 92 
15160 159 e140 e103 e79 305 139 1480 347 309 114 82 
 
16159 158 e150 e98 e78 271 140 1080 323 278 106 73 
17155 157 e160 e94 e78 251 149 944 309 258 100 68 
18158 157 180 e90 e78 224 149 841 297 241 92 68 
19154 159 268 e86 e80 208 149 775 340 226 87 66 
20155 159 236 e84 e85 216 158 773 361 212 85 65 
 
21155 157 204 e82 e95 214 158 1160 314 781 81 67 
22e155 159 186 e78 e115 198 150 935 286 416 77 74 
23e155 157 122 e76 e140 184 143 766 262 396 72 73 
24161 160 e140 e74 e190 171 136 698 249 301 68 69 
25183 159 e170 e72 e180 172 138 642 238 250 65 66 
 
26187 e140 e240 e72 e150 169 135 584 284 217 65 69 
27178 e120 e210 e73 e130 160 130 542 284 253 63 83 
28169 e130 e200 e73 e120 166 127 525 256 273 59 89 
29164 e140 e200 e72 --- 191 134 511 250 234 61 75 
30169 e130 199 e76 --- 188 153 485 242 212 62 71 
 
31169 --- 187 e85 --- 174 --- 483 --- 195 67 --- 

TOTAL513146524920328730165404471244289105621025936592275
MEAN166155159106108174157142935233111875.8
MAX2241662681591903402053670457825310105
MIN1331201107278961274832381805965
CFSM0.170.150.160.110.110.170.161.420.350.330.120.08
IN.0.190.170.180.120.110.200.171.640.390.380.140.08

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1936 - 2003, BY WATER YEAR (WY)
MEAN384452457529755102410641001918562382334
MAX213517901905197623183244356235003568294618451777
(WY)199919781983194620011979197319741974199019871970
MIN48.860.457.126.568.817415714012762.961.046.5
(WY)195419541959197719402003200319891977194019881940

SUMMARY STATISTICSFOR 2002 CALENDAR YEARFOR 2003 WATER YEARWATER YEARS 1936 - 2003
ANNUAL TOTAL270000         102166     
ANNUAL MEAN740         280     656         
HIGHEST ANNUAL MEAN1579         1993
LOWEST ANNUAL MEAN159         1940
HIGHEST DAILY MEAN8760             Jun 53670         May 110100         Mar 19 1979
LOWEST DAILY MEAN110      A    Dec 10, 1159         Aug 2822         Jan 18 1977
ANNUAL SEVEN-DAY MINIMUM115             Dec 763         Aug 2524         Jan 17 1977
MAXIMUM PEAK FLOW5340         May 112100      BJun 22 1974
MAXIMUM PEAK STAGE13.09    May 121.59 CJan 23 1969
INSTANTANEOUS LOW FLOW58         Aug 28
ANNUAL RUNOFF (CFSM)0.74    0.280.65    
ANNUAL RUNOFF (INCHES)10.01    3.798.89    
10 PERCENT EXCEEDS1440         467     1460         
50 PERCENT EXCEEDS350         158     385         
90 PERCENT EXCEEDS147         76     97         

A - Estimated due to backwater from ice.

B - Gage height, 19.75 ft., present datum.

C - Present datum, due to backwater from ice, estimated discharge, 8,000 ft3/s.



Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data