05440700 DATA: Discharge Tables, 2003

Station list Available data
ROCK RIVER BASIN

05440700 ROCK RIVER AT BYRON, IL


LOCATION.-- Lat 42°07'23", long 89°15'21" (NAD of 1927), 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 to current year.
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 NGVD of 1929.

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, 1,190 ft³/s, Sept. 9, 2003.

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

Discharge, cubic feet per second, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	3280	3710	3490	2970	e2200	e2500	4020	3550	5630	2370	2540	e1320
2	4320	3650	3120	2840	e2300	e2500	3920	4130	5140	2320	2300	e1300
3	4610	3670	e3400	2780	e2500	e2500	3780	4850	4760	2330	2180	e1320
4	5150	3570	e3000	2600	e2700	e2600	3800	5060	4270	2300	2140	e1320
5	6060	3510	e3200	2650	e3000	e2400	3910	5940	4420	2470	2210	1320

6	6190	3660	e3000	2890	e3400	e2300	3870	6670	4060	2490	2130	1330
7	5840	3540	e2800	2940	e3400	e2200	3830	6580	3730	2600	2000	1300
8	5470	3250	e3000	2870	e3300	e2300	3860	6440	3800	2800	2000	1250
9	5650	3120	e3200	2910	e3200	e2500	3880	6610	3600	3420	2020	1210
10	5220	3450	e2700	3070	e3100	e2400	3730	7700	3720	3650	1980	1290

11	4810	3490	e2900	e2900	e3000	e2400	3720	8700	3600	3670	1920	1280
12	4240	3430	e3100	e2600	e2900	e2400	3690	8390	3240	3220	1870	1330
13	3900	3410	e3300	e2600	e2900	e2400	3620	8560	3180	3020	1840	1450
14	3720	3340	e3200	e2600	e2900	e2400	3740	8570	3170	2930	1860	1590
15	3670	3240	3160	e2600	e2900	e2500	3710	9110	3100	3630	1880	1990

16	3600	3350	2960	e2700	e3200	e2600	3150	8970	3100	4430	1840	1880
17	3620	3300	2910	e2800	e3200	e2900	2920	8720	2980	3730	1740	1660
18	3620	3270	3180	e2800	e2900	e3400	3060	8150	3130	3140	1680	1740
19	3630	3390	3430	e2700	e2700	3890	2820	7780	3150	3040	1680	1870
20	3550	3270	3690	e2700	e2600	3970	2840	7540	3240	2990	1680	1700

21	3520	3220	3610	e2600	e2500	3930	3140	7530	2900	2640	1670	1470
22	3480	3280	3560	e2500	e2500	3820	3240	7480	2590	2640	e1500	1580
23	3520	3250	3390	e2400	e2500	3800	3250	7230	2590	2820	e1460	1650
24	3530	3190	3090	e2300	e2500	3790	3330	6950	2480	2600	1670	1530
25	3860	3140	3250	e2200	e2700	3700	3600	6510	2270	2590	e1400	1390

26	3710	3120	3250	e2200	e2700	3950	3520	6130	2780	2470	e1440	1530
27	3480	3040	3240	e2200	e2600	4000	3690	5820	2640	2260	1460	1550
28	3520	3010	3020	e2200	e2600	3910	3580	5640	2320	2140	e1380	1380
29	3470	3240	3000	e2200	---	4000	3300	5400	2550	2140	e1250	1470
30	3840	3090	3150	e2100	---	3990	3070	5230	2460	2130	e1280	1530

31	3810	---	3100	e2200	---	4030	---	5450	---	2080	e1300	---

TOTAL	129890	100200	98400	80620	78900	95980	105590	211390	100600	87060	55300	44530
MEAN	4190	3340	3174	2601	2818	3096	3520	6819	3353	2808	1784	1484
MAX	6190	3710	3690	3070	3400	4030	4020	9110	5630	4430	2540	1990
MIN	3280	3010	2700	2100	2200	2200	2820	3550	2270	2080	1250	1210
CFSM	0.52	0.42	0.40	0.33	0.35	0.39	0.44	0.85	0.42	0.35	0.22	0.19
IN.	0.60	0.47	0.46	0.38	0.37	0.45	0.49	0.98	0.47	0.41	0.26	0.21

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 2000 - 2003, BY WATER YEAR (WY)
MEAN	5169	4876	4165	3588	6358	7130	7471	7737	11260	4896	3623	4038
MAX	6794	6495	5963	4706	10480	9905	9777	8817	21220	8699	4685	5868
(WY)	2002	2002	2002	2002	2001	2001	2001	2001	2000	2000	2000	2000
MIN	4190	3340	3174	2601	2818	3096	3520	6819	3353	2808	1784	1484
(WY)	2003	2003	2003	2003	2003	2003	2003	2003	2003	2003	2003	2003

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR		FOR 2003 WATER YEAR		WATER YEARS 2000 - 2003
ANNUAL TOTAL	2084620		1188460
ANNUAL MEAN	5711		3256
HIGHEST ANNUAL MEAN					6465	2001
LOWEST ANNUAL MEAN					3256	2003
HIGHEST DAILY MEAN	29600	Jun 5	9110	May 15	34700	Jun 14 2000
LOWEST DAILY MEAN	2370	Aug 19	1210	Sep 9	1210	Sep 9 2003
ANNUAL SEVEN-DAY MINIMUM	2540	Aug 7	1280	Sep 5	1280	Sep 5 2003
MAXIMUM PEAK FLOW			9290	May 15	35400	Jun 14 2000
MAXIMUM PEAK STAGE			8.11	May 15	16.12	Jun 14 2000
INSTANTANEOUS LOW FLOW			1190	Sep 9	1190	Sep 9 2003
ANNUAL RUNOFF (CFSM)	0.71		0.41
ANNUAL RUNOFF (INCHES)	9.71		5.53
10 PERCENT EXCEEDS	9390		5090		9450
50 PERCENT EXCEEDS	4650		3090		4420
90 PERCENT EXCEEDS	2880		1680		2500