Station list
05446500 ROCK RIVER NEAR JOSLIN, IL
LOCATION.--Lat 41°33'21", long 90°11'08", in NE¼NE¼ sec.18, T.18 N., R.3 E., Rock Island County, Hydrologic Unit 07090005,
near center of span on downstream side of bridge on State Highway 92, 1.8 mi east of Joslin, 14.5 mi downstream from Rock
Creek, and at mile 26.9.
DRAINAGE AREA.--9,549 mi2.
PERIOD OF RECORD.--October 1939 to current year.
REVISED RECORDS.--WDR IL-79-1: Drainage area.
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 564.06 ft above sea level (levels by U.S. Army Corps of
Engineers). Prior to Apr. 6, 1940, nonrecording gage at same site and datum.
REMARKS.--Records good except those for Dec. 19 - Sept. 9, which are fair, and those for estimated daily discharges, which are
poor. Some diurnal fluctuation caused by powerplants upstream from station. U.S. Army Corps of Engineers satellite telemeter
at station.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998
DAILY MEAN VALUES
|
---|
DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP
|
---|
|
1 | 3330 | 3590 | 3780 | e3900 | e3700 | 8290 | 12600 | 17100 | 9240 | 17700 | 4620 | 5380 |
2 | 3110 | 3430 | 3780 | 3750 | e4100 | 8280 | 15500 | 16600 | 8940 | 15400 | 4690 | 4950 |
3 | 3110 | 3260 | 3800 | 3420 | e4800 | 8500 | 16500 | 16200 | 8820 | 13800 | 4730 | 4980 |
4 | 3050 | 3250 | 3930 | 3850 | e5500 | 8530 | 16600 | 15800 | 8640 | 14100 | 4960 | 4580 |
5 | 3230 | 3030 | 3930 | 4440 | e5800 | 8630 | 16500 | 15300 | 7860 | 14700 | 5650 | 4320 |
|
6 | 3060 | 3180 | 3850 | 5400 | 5970 | 8460 | 16600 | 15300 | 8280 | 14300 | 5660 | 4210 |
7 | 2690 | 3580 | 3890 | 6950 | 5990 | 8200 | 16700 | 15400 | 7540 | 14000 | 8310 | 4190 |
8 | 3160 | 3470 | 3860 | e7700 | 5870 | 8410 | 17100 | 16700 | 7530 | 14200 | 9850 | 4140 |
9 | 2790 | 3840 | 3810 | e8200 | 5670 | 9200 | 18100 | 19300 | 7710 | 14000 | 9790 | 4160 |
10 | 2840 | 3950 | 3830 | e8500 | 5140 | 10500 | 20100 | 20700 | 8260 | 13100 | 8710 | 4110 |
|
11 | 2890 | 4010 | 3790 | e8000 | 5600 | 10600 | 20900 | 20900 | 9810 | 12100 | 8560 | 3980 |
12 | 2790 | 3890 | 3880 | e6400 | 6420 | 10000 | 20900 | 20200 | 10300 | 11800 | 8280 | 3810 |
13 | 2810 | 3750 | 3760 | e5100 | 7400 | 9140 | 20400 | 18700 | 10800 | 11200 | 7790 | 3860 |
14 | 2790 | 3600 | 3790 | e4300 | 8250 | 8800 | 20300 | 17100 | 11100 | 10200 | 7580 | 4020 |
15 | 2880 | 3250 | 3740 | e3700 | 8290 | 8620 | 20900 | 16600 | 11400 | 9990 | 6540 | 4860 |
|
16 | 2800 | 3710 | 3610 | e3300 | 8140 | 8210 | 21300 | 15900 | 11400 | 9050 | 6760 | 5170 |
17 | 2700 | 3570 | 3620 | e3600 | 7870 | 7320 | 21300 | 15300 | 10500 | 8720 | 6570 | 5270 |
18 | 2960 | 3670 | 3660 | e3900 | 7380 | 8920 | 22000 | 13900 | 11500 | 8000 | 6440 | 5580 |
19 | 2720 | 3230 | 3460 | e4400 | 7490 | 8830 | 22500 | 12900 | 11300 | 7990 | 6280 | 5730 |
20 | 2620 | 3370 | 3360 | e4300 | 7590 | 10100 | 22100 | 13000 | 13900 | 7650 | 5960 | 5780 |
|
21 | 2660 | 3390 | 3320 | e4100 | 7680 | 10400 | 21400 | 12200 | 12000 | 7760 | 5810 | 5540 |
22 | 2670 | 3410 | 3430 | e3950 | 7570 | 10700 | 21200 | 11700 | 12700 | 7540 | 5600 | 5280 |
23 | 2730 | 3310 | 3440 | e3850 | 7470 | 10500 | 21800 | 11500 | 11900 | 7160 | 5350 | 4750 |
24 | 2820 | 3470 | 3480 | e3750 | 7190 | 10100 | 21900 | 10500 | 11100 | 7450 | 4810 | 4510 |
25 | 3140 | 3730 | 3620 | e3650 | 7310 | 9790 | 21400 | 10800 | 11100 | 6830 | 5210 | 4580 |
|
26 | 3400 | 3510 | 3600 | e3600 | 7290 | 9400 | 20600 | 9900 | 10900 | 6670 | 5970 | 4450 |
27 | 3400 | 3580 | 3540 | e3600 | 7520 | 8890 | 19700 | 9920 | 14000 | 6680 | 5900 | 4280 |
28 | 3470 | 3680 | e3450 | e3550 | 8120 | 9140 | 19400 | 9750 | 18300 | 6700 | 5730 | 4300 |
29 | 3500 | 3600 | e3400 | e3550 | --- | 9150 | 18900 | 9510 | 19100 | 5680 | 5850 | 4350 |
30 | 3710 | 3650 | e3450 | e3550 | --- | 9070 | 18200 | 9720 | 19200 | 5760 | 5860 | 4480 |
|
31 | 3600 | --- | e3600 | e3550 | --- | 9620 | --- | 9350 | --- | 5020 | 5530 | --- |
TOTAL | 93430 | 105960 | 113460 | 143810 | 187120 | 284300 | 583400 | 447750 | 335130 | 315250 | 199350 | 139600
|
MEAN | 3014 | 3532 | 3660 | 4639 | 6683 | 9171 | 19450 | 14440 | 11170 | 10170 | 6431 | 4653
|
MAX | 3710 | 4010 | 3930 | 8500 | 8290 | 10700 | 22500 | 20900 | 19200 | 17700 | 9850 | 5780
|
MIN | 2620 | 3030 | 3320 | 3300 | 3700 | 7320 | 12600 | 9350 | 7530 | 5020 | 4620 | 3810
|
CFSM | .32 | .37 | .38 | .49 | .70 | .96 | 2.04 | 1.51 | 1.17 | 1.06 | .67 | .49
|
IN. | .36 | .41 | .44 | .56 | .73 | 1.11 | 2.27 | 1.74 | 1.31 | 1.23 | .78 | .54
|
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1940 - 1998, BY WATER YEAR (WY)
|
---|
MEAN | 4449 | 5141 | 4999 | 5267 | 6246 | 10900 | 10840 | 8354 | 6978 | 5741 | 4351 | 4178
|
MAX | 17110 | 16700 | 14780 | 15820 | 14030 | 22500 | 26950 | 26030 | 22780 | 24000 | 12420 | 13470
|
(WY) | 1987 | 1986 | 1983 | 1973 | 1997 | 1948 | 1993 | 1973 | 1996 | 1993 | 1993 | 1972
|
MIN | 1381 | 1626 | 1519 | 1172 | 1554 | 2803 | 3877 | 2032 | 2052 | 1902 | 1349 | 1084
|
(WY) | 1957 | 1950 | 1959 | 1940 | 1940 | 1954 | 1940 | 1958 | 1977 | 1965 | 1958 | 1958
|
SUMMARY STATISTICS | FOR 1997 CALENDAR YEAR | FOR 1998 WATER YEAR | WATER YEARS 1940 - 1998 |
---|
ANNUAL TOTAL | 2655240 | | 2948560 | | |
|
ANNUAL MEAN | 7275 | | 8078 | | 6452 |
|
HIGHEST ANNUAL MEAN | | | | | 14560 | 1993
|
LOWEST ANNUAL MEAN | | | | | 2587 | 1964
|
HIGHEST DAILY MEAN | 40000 A | Feb 23 | 22500 | Apr 19 | 44700 | Mar 22 1948
|
LOWEST DAILY MEAN | 2620 | Oct 20 | 2620 | Oct 20 | 834 | Jan 3 1940
|
ANNUAL SEVEN-DAY MINIMUM | 2720 | Oct 17 | 2720 | Oct 17 | 977 | Jan 1 1940
|
INSTANTANEOUS PEAK FLOW | | | 22600 | Apr 19 | 46500 B | Mar 26 1993
|
INSTANTANEOUS PEAK STAGE | | | 13.03 | Apr 19 | 18.88 C | Feb 23 1997
|
INSTANTANEOUS LOW FLOW | | | 2560 | Oct 17 | |
|
ANNUAL RUNOFF (CFSM) | .76 | | .85 | | .68 |
|
ANNUAL RUNOFF (INCHES) | 10.34 | | 11.49 | | 9.18 |
|
10 PERCENT EXCEEDS | 11200 | | 16600 | | 12800 |
|
50 PERCENT EXCEEDS | 5700 | | 6440 | | 4890 |
|
90 PERCENT EXCEEDS | 3320 | | 3380 | | 2000 |
|
A - Estimated due to backwater from ice.
B - Gage height, 18.35 ft, affected by levee break.
C - Backwater from ice.