Station list     Available data
ROCK RIVER BASIN


05438500       KISHWAUKEE RIVER AT BELVIDERE, IL



LOCATION.-- Lat 42°15'22", long 88°51'50", in SE1/4SE1/4 sec.27, T.44 N., R.3 E., Boone County, Hydrologic Unit 07090006, on left bank at Belvidere sewage-treatment plant, 1.3 mi downstream from bridge on State Street in Belvidere, 3.0 mi downstream from Piscasaw Creek, and at mile 21.9.

DRAINAGE AREA.-- 538 mi2.

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
 

DISCHARGE: October 1939 to current year.

 

STAGE: Water years 1994-2000.


REVISED RECORDS.-- WSP 1175: 1946. WSP 1508: 1940, 1942-43, 1947(M). WSP 1728: 1940(M). WDR IL-75-1: Drainage area. WDR IL-00: 1999.

GAGE.-- Water-stage recorder, phone telemeter and crest-stage gage. Datum of gage is 738.34 ft above sea level (U.S. Army Corps of Engineers bench mark). Sept. 29, 1939, to Sept. 30, 1942, nonrecording gage at site 1.3 mi upstream at datum 3.99 ft higher, and Oct. 1, 1942, to Sept. 30, 1973, nonrecording gage at present site and datum.

EXTREMES OUTSIDE PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Flood of Jan. 24, 1938, reached a stage of 16.9 ft, backwater from ice, from information by sewage-treatment plant employees.

REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor.

REVISIONS.-- The minimum discharge for water year 1999 has been revised to 86 ft3/s, Sept. 26, 1999; revised daily discharges, in cubic feet per second, for periods in August and September, 1999, are given below. These figures supersede those published in the 1999 annual table.
Aug. 24...386 Sept. 1...150 Sept. 9...101 Sept. 17....99 Sept. 25....91
25...315 2...141 10....98 18....97 26....89
26...262 3...134 11....98 19....96 27...120
27...211 4...127 12...102 20....95 28...483
28...186 5...120 13...108 21....98 29..1140
29...171 6...118 14...109 22....95 30..1020
30...152 7...112 15...104 23....94
31...148 8...108 16...102 24....92
TOTAL MEAN MAX MIN CFSM IN
August 1999 5727 185 386 146 .34 .40
September 1999 5541 185 1140 89 34 38
Water year 1999 228125 625 8860 89 1.16 15.77
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
DAILY MEAN VALUES
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
1767 169 146 159 159 611 199 389 967 501 479 117 
2528 170 149 175 152 517 199 373 1860 520 400 110 
3e480 168 155 185 153 447 200 347 2380 1880 290 110 
4434 166 164 183 155 409 192 325 1610 2150 239 113 
5434 164 227 177 146 381 181 303 1390 1630 222 110 
 
6377 161 306 167 149 353 183 288 1250 1170 224 107 
7326 162 289 175 152 332 189 279 1100 858 213 104 
8295 164 255 164 146 316 197 279 878 671 196 104 
9273 167 238 206 154 311 209 367 703 570 186 104 
10257 167 228 242 165 292 212 850 579 1230 175 108 
 
11241 161 213 308 167 279 206 986 598 1360 164 171 
12226 157 206 288 153 269 198 1250 1520 1110 157 599 
13220 160 200 256 165 256 189 971 4850 831 153 599 
14213 161 195 178 161 249 187 687 4200 627 156 472 
15208 157 196 233 156 249 187 526 3710 524 148 372 
 
16213 157 198 236 161 249 180 459 2850 465 139 279 
17206 155 192 172 155 237 191 433 2150 430 171 225 
18198 156 151 204 160 228 193 925 1620 392 189 199 
19195 158 185 163 158 238 250 2610 1170 368 168 176 
20193 156 174 158 162 260 843 2690 956 352 156 189 
 
21189 152 118 e155 157 269 1650 2200 843 337 145 222 
22189 153 171 e152 201 260 1740 1690 714 322 142 374 
23184 159 157 e150 579 248 1510 1230 622 304 141 2870 
24178 164 152 e150 1130 243 1140 948 628 294 137 2330 
25178 157 147 e150 1300 248 829 724 766 278 131 1760 
 
26177 156 152 e150 1300 234 649 609 855 271 129 1120 
27173 156 151 150 1210 234 551 596 779 261 129 726 
28172 150 148 150 923 226 491 693 661 254 126 566 
29168 148 151 151 721 215 440 851 608 246 123 482 
30169 146 161 156 --- 207 404 770 547 241 121 427 
 
31167 --- 159 160 --- 201 --- 709 --- 317 122 --- 

TOTAL822847775734570310650906813989263574336420764567115245
MEAN2651591851843672934668501445670183508
MAX767170306308130061117402690485021504792870
MIN167146118150146201180279547241121104
CFSM.49.30.34.34.68.54.871.582.691.24.34.94
IN..57.33.40.39.74.63.971.823.001.44.391.05

e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1940 - 2000, BY WATER YEAR (WY)
MEAN234284301298407677636495448292215243
MAX124213281613105312082337246116101835181512872215
(WY)197319861983197419971979199319741999199319871972
MIN40.350.142.830.549.612014110810156.639.244.0
(WY)195719571964194019401956196319491977194119641964

SUMMARY STATISTICSFOR 1999 CALENDAR YEARFOR 2000 WATER YEARWATER YEARS 1940 - 2000
ANNUAL TOTAL215362     169550         
ANNUAL MEAN590     463         377         
HIGHEST ANNUAL MEAN992         1993
LOWEST ANNUAL MEAN112         1963
HIGHEST DAILY MEAN8860         Jun 144850             Jun 138860         Jun 14 1999
LOWEST DAILY MEAN89         Sep 26104             Sep 7,8,915         A
ANNUAL SEVEN-DAY MINIMUM93         Sep 20107             Sep 423         Jan 2 1940
INSTANTANEOUS PEAK FLOW5730             Jun 1311900         Feb 20 1994
INSTANTANEOUS PEAK STAGE10.69        Jun 1314.19    Feb 20 1994
INSTANTANEOUS LOW FLOW67      B    Dec 2114      CSep 19 1988
ANNUAL RUNOFF (CFSM)1.10.86    .70    
ANNUAL RUNOFF (INCHES)14.8911.72    9.52    
10 PERCENT EXCEEDS1220     1120         810         
50 PERCENT EXCEEDS312     223         212         
90 PERCENT EXCEEDS150     150         68         
A - Dec. 30, 1939; Jan. 7, 1940.
B - Result of freezeup.
C - Observed.

Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data