Station list     Available data
ILLINOIS RIVER BASIN


05550000       FOX RIVER AT ALGONQUIN, IL

 

LOCATION.-- Lat 42°09'59", long 88°17'25" (NAD of 1927), in NE1/4NW1/4 sec.34, T.43 N., R.8 E., McHenry County, Hydrologic Unit 07120006, on right bank 20 ft upstream from bridge on State Highway 62 (Algonquin Road) in Algonquin, 140 ft upstream from Algonquin Dam, and at mile 81.6.

 

DRAINAGE AREA.-- 1,403 mi2.

 

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

 

DISCHARGE: October 1915 to current year. Monthly discharge only for some periods, published in WSP 1308.

 

STAGE: Water years 1994 to current year.

BIOLOGICAL

 

ALGAE: Pigment and biomass, Water year 1989.

 

REVISED RECORDS.-- WSP 1175: 1916. WDR IL-75-1: Drainage area.

 

GAGE.-- Water-stage recorder, phone telemeter, and concrete dam with adjustable gate. Datum of gage is 729.48 ft above NGVD of 1929. Prior to Oct. 20, 1933, nonrecording gage at site 20 ft downstream at same datum.

 

REMARKS.-- Flow regulated by gate in Algonquin Dam, Stratton Lock and Dam (previously known as McHenry Dam), 16 mi upstream from station, and occasionally affected by wind action.

 

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 6,720 ft3/s, May 22, 2004, gage height 3.09 ft, due to regulation; maximum gage height, 4.50 ft, April 1, 1916; from graph based on gage readings; no flow, Nov. 26, 1952, Nov. 20, 1953, Oct. 25, 1956 and Sept. 9, 14, 1958, result of windstorm.

 

REMARKS FOR CURRENT YEAR.-- Records poor.

Discharge, cubic feet per second, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004
DAILY MEAN VALUES
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
1136 232 601 607 441 666 2210 1000 5750 1680 e360 553 
2129 322 594 600 394 741 2120 988 5630 1420 e360 542 
3110 620 575 622 363 1010 2040 900 5370 1320 e380 539 
4166 1010 498 637 341 1440 1890 729 5000 1250 e480 510 
5190 1460 502 578 338 1850 1700 690 4560 1300 e580 471 
 
6183 1620 470 557 336 2510 1440 661 e3900 1360 e510 419 
7157 1570 467 581 332 2610 1130 728 e3500 1330 e450 455 
8158 1540 480 574 329 2690 1060 634 e3350 1260 e440 467 
9168 1460 504 557 327 2650 972 597 e3250 1170 e450 429 
10168 1190 785 481 330 2470 960 760 e3150 1170 e455 382 
 
11144 903 1330 463 332 2150 961 1120 e3300 1140 e460 355 
12146 787 1530 472 330 2080 934 1170 e3800 1100 e465 350 
13144 825 1420 473 328 1990 849 1430 e3900 985 e470 335 
14222 789 1270 471 337 1910 780 1870 3770 957 e470 307 
15199 799 1200 465 336 1740 738 2200 3380 878 e460 279 
 
16212 788 1160 466 329 1070 702 2310 3060 834 e450 363 
17190 762 1170 473 330 966 701 2660 2800 814 e420 386 
18158 859 1090 466 336 1070 600 3750 2610 727 e400 357 
19193 856 1060 455 343 1040 567 3980 2570 621 e390 329 
20163 826 778 451 356 1060 708 4030 2490 506 e380 319 
 
21189 872 742 443 369 1090 722 4020 2540 535 e370 301 
22195 829 749 360 374 1010 835 5090 3010 e550 e360 305 
23181 761 737 332 399 999 874 5430 3070 e560 e350 290 
24168 772 610 327 425 1080 938 5560 3200 e540 e350 263 
25183 797 577 327 431 1100 939 e5400 3190 e520 e360 253 
 
26170 812 582 327 464 1360 952 e5200 3100 e490 e380 237 
27170 784 574 332 521 1800 1060 e5050 3000 e460 e410 228 
28131 769 598 327 563 1900 851 e5000 2880 e420 587 279 
29159 700 619 336 599 2090 720 e5000 2600 e380 604 232 
30174 625 600 363 --- 2230 917 e5200 2080 e370 557 206 
 
31171 --- 609 434 --- 2310 --- 6020 --- e370 563 --- 

TOTAL522726939244811435711033506823187089177103810270171372110741
MEAN1698987904633801635106228773460872443358
MAX2221620153063759926902210602057501680604553
MIN1102324673273276665675972080370350206
CFSM0.120.640.560.330.271.170.762.052.470.620.320.26
IN.0.140.710.650.380.291.340.852.362.750.720.360.28

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1916 - 2004, BY WATER YEAR (WY)
MEAN623820783715876164117001185890611468505
MAX365024923105267536134162496137863610290229642926
(WY)198719861983196019381918199319732000193819241972
MIN31.814718514216827423715011057.731.452.9
(WY)195719541940194019401934193419341934193419341934

SUMMARY STATISTICSFOR 2003 CALENDAR YEARFOR 2004 WATER YEARWATER YEARS 1916 - 2004
ANNUAL TOTAL193708       409055           
ANNUAL MEAN531       1118           901           
HIGHEST ANNUAL MEAN1936           1993
LOWEST ANNUAL MEAN202           1934
HIGHEST DAILY MEAN2000           May 13,146020               May 316610           Apr 2 1979
LOWEST DAILY MEAN90           Sep 6110               Oct 312           A
ANNUAL SEVEN-DAY MINIMUM102           Sep 6153               Oct 119           Oct 16 1956
MAXIMUM PEAK FLOW6720        B    May 226720        BMay 22 2004
MAXIMUM PEAK STAGE3.32   C    May 224.50   DApr 1 1916
INSTANTANEOUS LOW FLOW62               Oct 30.00      E
ANNUAL RUNOFF (CFSM)0.3780.797    0.642    
ANNUAL RUNOFF (INCHES)5.14  10.85      8.72      
10 PERCENT EXCEEDS1020       2920           2030           
50 PERCENT EXCEEDS410       614           604           
90 PERCENT EXCEEDS144       248           192           

A - Aug. 30, 31, 1934; July 28, 1942.

B - Gage height 3.09 ft, due to regulation.

C - Discharge 4,770 ft3/s, due to regulation.

D - From graph based on gage readings.

E - Nov. 26, 1952; Nov. 20, 1953; Oct. 25, 1956 and Sept. 9, 14, 1958; result of windstorms.



Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data