05548280 DATA: Discharge Tables, 2002

Station list Available data
ILLINOIS RIVER BASIN

05548280 NIPPERSINK CREEK NEAR SPRING GROVE, IL


LOCATION.-- Lat 42°26'36", long 88°14'51" (NAD of 1927), in NE1/4NW1/4 sec.25, T.46 N., R.8 E., McHenry County, Hydrologic Unit 07120006, on right bank at upstream side of bridge on Winn Road, 0.6 mi west of Spring Grove, and at mile 7.4.

DRAINAGE AREA.-- 192 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
	DISCHARGE: August 1966 to current year.
	STAGE: Water years 1994-2002.
SURFACE-WATER QUALITY
	CHEMICAL: Water years 1976-91.
	SEDIMENT: Dec. 1997 to May 1999.
PRECIPITATION: October 1999 to current year.

REVISED RECORDS.-- WSP 2115: 1969-70(M). WDR IL-75-1: Drainage area. WDR IL-85-2: 1966-67(M), 1971.

GAGE.-- Water stage recorder, phone telemeter, rain gage, and crest-stage gage. Datum of gage is 746.00 ft above NGVD of 1929.

REMARKS.-- Suspended-sediment samples were collected twice weekly with more frequent samples collected during high runoff periods. Collection, computation, and publication of precipitation data do not necessarily conform to standards used by the National Weather Service. Precipitation data could be subject to error for days with freezing and/or thawing of precipitation.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 2,910 ft³/s, Sept. 26, 1986, gage height, 14.26 ft; minimum discharge, 6.6 ft³/s, Aug. 7, 1988.
SUSPENDED-SEDIMENT CONCENTRATION: Maximum daily, 244 mg/L, May 17, 1999; minimum daily, 8 mg/L, Nov. 24, 1998.
SUSPENDED-SEDIMENT LOAD: Maximum daily, 247 tons, May 17, 1999; minimum daily, 1.9 tons, Nov. 24, 1998.
PRECIPITATION: Maximum daily total, 2.82 in., June 12, 2000.

EXTREMES OUTSIDE PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Flood in April 1960 reached a stage of 13.7 ft, from information by local resident, and flood in July 1938 reached a stage of about 4 to 6 ft higher than that in April 1960.

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

DISCHARGE, in CFS, WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	100	197	181	e103	113	124	122	167	108	79	45	44
2	99	169	167	105	107	137	131	168	97	74	39	81
3	97	160	163	102	103	140	137	163	108	68	35	121
4	94	154	156	102	95	129	131	151	373	64	38	88
5	87	150	159	101	97	131	127	142	732	60	43	70

6	85	148	149	101	95	121	119	136	846	61	44	60
7	84	136	134	97	93	119	133	125	631	61	42	55
8	83	132	132	97	94	168	205	120	440	62	41	51
9	76	136	131	100	96	370	466	131	303	62	40	49
10	77	131	130	99	130	442	541	119	242	57	39	47

11	85	124	121	97	161	391	447	120	243	55	39	43
12	92	126	128	96	155	284	322	205	238	54	38	43
13	110	131	160	97	137	247	249	222	208	53	50	43
14	163	154	159	98	128	221	224	196	215	53	72	41
15	137	183	149	102	120	212	205	175	216	52	65	41

16	114	170	139	101	115	187	191	160	181	51	53	40
17	102	156	135	100	112	175	167	175	155	50	49	40
18	95	147	134	e93	111	168	164	188	144	49	44	42
19	91	148	132	e97	122	160	231	175	133	47	41	51
20	87	145	133	94	173	156	226	165	123	46	39	99

21	84	143	125	92	230	151	209	155	111	48	41	112
22	85	129	124	91	224	143	213	149	107	46	109	82
23	156	125	e120	94	198	139	199	140	102	41	143	69
24	304	143	117	96	184	129	187	130	95	39	145	57
25	544	206	115	97	168	120	177	144	91	41	130	52

26	533	200	e115	96	157	117	159	165	91	45	94	50
27	437	194	e111	97	150	117	155	147	87	50	70	47
28	321	173	109	99	141	120	201	132	84	52	58	47
29	248	164	105	99	---	121	205	134	82	52	52	69
30	212	172	e105	97	---	134	184	127	81	49	49	80

31	206	---	e103	105	---	126	---	117	---	47	46	---

TOTAL	5088	4646	4141	3045	3809	5499	6427	4743	6667	1668	1833	1814
MEAN	164.1	154.9	133.6	98.23	136.0	177.4	214.2	153.0	222.2	53.81	59.13	60.47
MAX	544	206	181	105	230	442	541	222	846	79	145	121
MIN	76	124	103	91	93	117	119	117	81	39	35	40
CFSM	0.85	0.81	0.70	0.51	0.71	0.92	1.12	0.80	1.16	0.28	0.31	0.31
IN.	0.99	0.90	0.80	0.59	0.74	1.07	1.25	0.92	1.29	0.32	0.36	0.35

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1966 - 2002, BY WATER YEAR (WY)
MEAN	104.8	124.6	142.2	121.2	168.7	246.3	257.1	185.2	185.8	115.4	87.87	112.9
MAX	473	372	493	316	455	554	652	542	646	522	258	579
(WY)	1987	1986	1983	1974	1971	1979	1993	1974	2000	1993	1972	1972
MIN	30.7	36.3	29.9	28.7	35.8	62.2	83.8	55.0	34.6	26.0	25.3	21.1
(WY)	1989	1972	1990	1977	1978	1968	1989	1989	1988	1988	1988	1988

SUMMARY STATISTICS	FOR 2001 CALENDAR YEAR		FOR 2002 WATER YEAR		WATER YEARS 1966 - 2002
ANNUAL TOTAL	61582		49380
ANNUAL MEAN	168.7		135.3		154.3
HIGHEST ANNUAL MEAN					288	1974
LOWEST ANNUAL MEAN					52.4	1977
HIGHEST DAILY MEAN	1090	Feb 26	846	Jun 6	2660	Jun 15 1999
LOWEST DAILY MEAN	52	Aug 14	35	Aug 3	10	Aug 6 1988
ANNUAL SEVEN-DAY MINIMUM	59	Aug 9	40	Aug 2	14	Aug 2 1988
MAXIMUM PEAK FLOW			893	Jun 6	2910	Sep 26 1986
MAXIMUM PEAK STAGE			8.47	Jun 6	14.26	Sep 26 1986
INSTANTANEOUS LOW FLOW			34	Aug 3	6.6	Aug 7 1988
ANNUAL RUNOFF (CFSM)	0.88		0.70		0.80
ANNUAL RUNOFF (INCHES)	11.93		9.57		10.92
10 PERCENT EXCEEDS	279		212		310
50 PERCENT EXCEEDS	137		120		102
90 PERCENT EXCEEDS	72		47		43