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
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 767  169  146  159  159  611  199  389  967  501  479  117 
2 528  170  149  175  152  517  199  373  1860  520  400  110 
3 e480  168  155  185  153  447  200  347  2380  1880  290  110 
4 434  166  164  183  155  409  192  325  1610  2150  239  113 
5 434  164  227  177  146  381  181  303  1390  1630  222  110 
 
6 377  161  306  167  149  353  183  288  1250  1170  224  107 
7 326  162  289  175  152  332  189  279  1100  858  213  104 
8 295  164  255  164  146  316  197  279  878  671  196  104 
9 273  167  238  206  154  311  209  367  703  570  186  104 
10 257  167  228  242  165  292  212  850  579  1230  175  108 
 
11 241  161  213  308  167  279  206  986  598  1360  164  171 
12 226  157  206  288  153  269  198  1250  1520  1110  157  599 
13 220  160  200  256  165  256  189  971  4850  831  153  599 
14 213  161  195  178  161  249  187  687  4200  627  156  472 
15 208  157  196  233  156  249  187  526  3710  524  148  372 
 
16 213  157  198  236  161  249  180  459  2850  465  139  279 
17 206  155  192  172  155  237  191  433  2150  430  171  225 
18 198  156  151  204  160  228  193  925  1620  392  189  199 
19 195  158  185  163  158  238  250  2610  1170  368  168  176 
20 193  156  174  158  162  260  843  2690  956  352  156  189 
 
21 189  152  118  e155  157  269  1650  2200  843  337  145  222 
22 189  153  171  e152  201  260  1740  1690  714  322  142  374 
23 184  159  157  e150  579  248  1510  1230  622  304  141  2870 
24 178  164  152  e150  1130  243  1140  948  628  294  137  2330 
25 178  157  147  e150  1300  248  829  724  766  278  131  1760 
 
26 177  156  152  e150  1300  234  649  609  855  271  129  1120 
27 173  156  151  150  1210  234  551  596  779  261  129  726 
28 172  150  148  150  923  226  491  693  661  254  126  566 
29 168  148  151  151  721  215  440  851  608  246  123  482 
30 169  146  161  156  ---  207  404  770  547  241  121  427 
 
31 167  ---  159  160  ---  201  ---  709  ---  317  122  --- 

TOTAL 8228 4777 5734 5703 10650 9068 13989 26357 43364 20764 5671 15245
MEAN 265 159 185 184 367 293 466 850 1445 670 183 508
MAX 767 170 306 308 1300 611 1740 2690 4850 2150 479 2870
MIN 167 146 118 150 146 201 180 279 547 241 121 104
CFSM .49 .30 .34 .34 .68 .54 .87 1.58 2.69 1.24 .34 .94
IN. .57 .33 .40 .39 .74 .63 .97 1.82 3.00 1.44 .39 1.05

e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1940 - 2000, BY WATER YEAR (WY)
MEAN 234 284 301 298 407 677 636 495 448 292 215 243
MAX 1242 1328 1613 1053 1208 2337 2461 1610 1835 1815 1287 2215
(WY) 1973 1986 1983 1974 1997 1979 1993 1974 1999 1993 1987 1972
MIN 40.3 50.1 42.8 30.5 49.6 120 141 108 101 56.6 39.2 44.0
(WY) 1957 1957 1964 1940 1940 1956 1963 1949 1977 1941 1964 1964

SUMMARY STATISTICS FOR 1999 CALENDAR YEAR FOR 2000 WATER YEAR WATER YEARS 1940 - 2000
ANNUAL TOTAL 215362      169550         
ANNUAL MEAN 590      463          377         
HIGHEST ANNUAL MEAN 992          1993
LOWEST ANNUAL MEAN 112          1963
HIGHEST DAILY MEAN 8860          Jun 14 4850              Jun 13 8860          Jun 14 1999
LOWEST DAILY MEAN 89          Sep 26 104              Sep 7,8,9 15          A
ANNUAL SEVEN-DAY MINIMUM 93          Sep 20 107              Sep 4 23          Jan 2 1940
INSTANTANEOUS PEAK FLOW 5730              Jun 13 11900          Feb 20 1994
INSTANTANEOUS PEAK STAGE 10.69         Jun 13 14.19     Feb 20 1994
INSTANTANEOUS LOW FLOW 67      B     Dec 21 14      C Sep 19 1988
ANNUAL RUNOFF (CFSM) 1.10 .86     .70    
ANNUAL RUNOFF (INCHES) 14.89 11.72     9.52    
10 PERCENT EXCEEDS 1220      1120          810         
50 PERCENT EXCEEDS 312      223          212         
90 PERCENT EXCEEDS 150      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