05440700 DATA: Discharge Tables, 2001

Station list Available data
ROCK RIVER BASIN

05440700 ROCK RIVER AT BYRON, IL

LOCATION.-- Lat 42°07'23", long 89°15'21", in NW1/4SW1/4 sec.32, T.25 N., R.11 E., Ogle County, Hydrologic Unit 7090005, at bridge on State Highway 72, 0.3 mi south of Byron, 1.2 mi upstream from Mill Creek, 1.3 mi downstream from Stillman Creek, and at mile 120.3.

DRAINAGE AREA.-- 7,990 mi².

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

DISCHARGE: May 2000 to current year.

STAGE: Water years 2000-2001.

SURFACE-WATER QUALITY

CHEMICAL: 1978-1988. Additional data for water years 1964, 1971-1977 are published in Water-Resources Investigations 78-23 and 79-24 as site P 14.

GAGE.-- Water-stage recorder, phone telemeter, and raingage. Datum of gage is 666.13 ft above sea level.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 35,400 ft³/s, June 14, 2000, gage-height, 16.12 ft; minimum discharge, 2,600 ft³/s, Aug. 1, 15, 2001.

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

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	5710	4090	4480	e3100	e4400	12100	8490	8670	8000	7230	2720	3520
2	5450	4140	4460	e3100	e4400	11000	8100	8320	8520	7090	3880	3350
3	5170	3840	4430	e3100	e4400	10700	7860	8110	8860	7020	4700	3300
4	5470	3730	4460	e3000	e4500	11700	7760	8490	8650	6750	4740	3210
5	5590	3700	4370	e3100	e4600	10700	7770	9280	9000	6530	4750	3290

6	5560	3640	e4500	e3200	e4700	9520	8030	9720	10200	6300	4890	3410
7	4910	4340	e3400	e3300	e5200	8870	8270	9850	10400	6190	4780	3440
8	4630	4700	e3600	e3500	e7000	8460	7790	9680	10200	5910	4470	4400
9	4600	4990	e4200	e3500	12500	7990	7850	9250	9740	5720	4070	5470
10	4530	5780	e3900	e3500	17000	7690	8580	9090	9300	5520	3710	6140

11	4420	6210	e3600	e3400	17600	7760	9360	9550	8790	5260	3470	5890
12	4330	6140	e2800	e3400	18400	8190	10900	10100	8750	5040	3460	5910
13	4290	5920	e3000	e3400	17100	8990	11800	10100	9910	4880	3340	5740
14	4220	5670	e3000	e3400	13500	9220	12200	9860	9580	4610	3260	5340
15	4130	5440	e3100	e3400	11500	9410	12100	9660	9440	4340	2900	5110

16	4100	5340	e3000	e3400	10800	10900	11900	9240	9610	4150	3100	4860
17	4150	5190	e3000	e3400	10300	11600	11400	8820	9600	3840	3230	4600
18	4370	4770	e3100	e3400	9690	11400	11200	8320	9610	3640	3220	4730
19	4290	4820	e3100	e3500	9470	11300	10800	7920	9470	3580	3200	5670
20	4360	4860	e3000	e3500	8880	11200	10600	7580	9250	3600	3280	6490

21	4130	4630	e3000	e3500	8020	11100	10700	7800	9080	3560	3240	e7000
22	4070	4540	e2900	e3600	7880	10900	10500	8090	9040	3510	3100	e7600
23	4020	4530	e2900	e3600	7580	10700	10900	8430	8910	3720	3150	e8000
24	4030	4700	e2900	e3600	7800	10400	10500	8530	8630	3770	3350	e8200
25	4060	4630	e2800	e3500	17700	10100	10300	8750	8330	3520	3390	e8000

26	4440	4740	e2800	e3500	18300	9830	10200	8690	8160	3500	3580	e7600
27	4380	4830	e2800	e3400	16000	9570	9780	8680	7970	3450	3700	e7400
28	4280	4750	e2800	e3400	14100	9280	9520	8630	7850	3400	3670	e7200
29	4230	4570	e2900	e3900	---	9010	9230	8400	7720	3300	3920	e6900
30	4160	4510	e2900	e4200	---	8840	8920	7980	7500	3170	4020	e6600

31	4130	---	e2900	e4400	---	8640	---	7750	---	2950	3750	---

TOTAL	140210	143740	104100	107200	293320	307070	293310	273340	270070	145050	114040	168370
MEAN	4523	4791	3358	3458	10480	9905	9777	8817	9002	4679	3679	5612
MAX	5710	6210	4500	4400	18400	12100	12200	10100	10400	7230	4890	8200
MIN	4020	3640	2800	3000	4400	7690	7760	7580	7500	2950	2720	3210
CFSM	.57	.60	.42	.43	1.31	1.24	1.22	1.10	1.13	.59	.46	.70
IN.	.65	.67	.48	.50	1.37	1.43	1.37	1.27	1.26	.68	.53	.78

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 2000 - 2001, BY WATER YEAR (WY)
MEAN	4523	4791	3358	3458	10480	9905	9777	8817	15110	6689	4182	5740
MAX	4523	4791	3358	3458	10480	9905	9777	8817	21220	8699	4685	5868
(WY)	2001	2001	2001	2001	2001	2001	2001	2001	2000	2000	2000	2000
MIN	4523	4791	3358	3458	10480	9905	9777	8817	9002	4679	3679	5612
(WY)	2001	2001	2001	2001	2001	2001	2001	2001	2001	2001	2001	2001

SUMMARY STATISTICS	FOR 2001 WATER YEAR		WATER YEARS 2000 - 2001
ANNUAL TOTAL	2359820
ANNUAL MEAN	6465
HIGHEST ANNUAL MEAN			6465	2001
LOWEST ANNUAL MEAN			6465	2001
HIGHEST DAILY MEAN	18400	Feb 12	34700	Jun 14 2000
LOWEST DAILY MEAN	2720	Aug 1	2720	Aug 1 2001
ANNUAL SEVEN-DAY MINIMUM	2840 A	Dec 22	2840	Dec 22 2000
MAXIMUM PEAK FLOW	21000	Feb 25	35400	Jun 14 2000
MAXIMUM PEAK STAGE	11.74	Feb 25	16.12	Jun 14 2000
INSTANTANEOUS LOW FLOW	2600	Aug 1, 15	2600	A
ANNUAL RUNOFF (CFSM)	.81
ANNUAL RUNOFF (INCHES)	10.99
10 PERCENT EXCEEDS	10500		12000
50 PERCENT EXCEEDS	5340		5910
90 PERCENT EXCEEDS	3230		3400

A - Aug. 1, 15, 2001.