05548280 DATA: Discharge Tables, 2001

Station list Available data
ILLINOIS RIVER BASIN

05548280 NIPPERSINK CREEK NEAR SPRING GROVE, IL

LOCATION.-- Lat 42°26'36", long 88°14'51", 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 1994-2001.

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 sea level.

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 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	137	111	124	112	168	392	180	148	181	103	64	55
2	128	113	123	110	211	325	175	128	224	94	68	55
3	109	113	118	107	251	333	164	116	228	100	75	59
4	143	107	113	117	142	348	160	107	195	110	70	70
5	147	108	103	113	114	317	157	98	232	94	66	63

6	155	110	101	110	108	266	183	100	354	93	63	60
7	144	221	112	109	106	237	186	116	322	113	60	113
8	132	219	102	104	113	226	e177	137	267	114	57	188
9	132	258	103	92	416	211	175	117	223	100	58	266
10	142	353	99	102	684	199	177	113	190	94	73	278

11	124	298	81	102	701	220	204	160	166	89	63	206
12	116	238	106	97	544	239	381	183	378	73	58	143
13	127	207	123	97	387	265	312	166	581	64	55	107
14	126	173	118	101	308	255	244	145	458	64	52	93
15	117	150	110	108	273	280	207	141	302	67	53	168

16	119	144	111	115	244	365	196	122	277	67	107	161
17	118	135	99	114	210	342	189	110	233	72	108	189
18	119	131	95	112	205	300	189	101	218	77	83	210
19	118	133	115	106	187	279	185	96	206	76	74	274
20	118	132	110	95	172	261	202	94	190	73	71	236

21	110	118	115	100	161	252	238	103	184	71	67	191
22	110	118	108	97	155	245	254	127	176	72	74	277
23	112	111	119	91	146	238	335	118	166	101	77	294
24	118	107	118	85	186	225	275	134	155	104	70	314
25	118	106	116	80	739	208	232	248	146	91	69	283

26	120	116	118	84	1090	190	217	255	129	79	86	209
27	121	121	121	78	789	184	170	243	122	73	81	115
28	113	119	120	81	556	179	e155	209	119	69	70	105
29	113	120	125	88	---	176	e152	176	112	70	64	103
30	111	124	125	137	---	174	150	154	111	67	63	101

31	113	---	118	177	---	174	---	142	---	65	58	---

TOTAL	3830	4614	3469	3221	9366	7905	6221	4407	6845	2599	2157	4986
MEAN	124	154	112	104	334	255	207	142	228	83.8	69.6	166
MAX	155	353	125	177	1090	392	381	255	581	114	108	314
MIN	109	106	81	78	106	174	150	94	111	64	52	55
CFSM	.64	.80	.58	.54	1.74	1.33	1.08	.74	1.19	.44	.36	.87
IN.	.74	.89	.67	.62	1.81	1.53	1.21	.85	1.33	.50	.42	.97

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1966 - 2001, BY WATER YEAR (WY)
MEAN	103	124	142	122	170	248	258	186	185	117	88.7	114
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 2000 CALENDAR YEAR		FOR 2001 WATER YEAR		WATER YEARS 1966 - 2001
ANNUAL TOTAL	72285		59620
ANNUAL MEAN	198		163		155
HIGHEST ANNUAL MEAN					288	1974
LOWEST ANNUAL MEAN					52.4	1977
HIGHEST DAILY MEAN	2650	Jun 14	1090	Feb 26	2660	Jun 15 1999
LOWEST DAILY MEAN	63 A	Jan 26,27	52	Aug 14	10	Aug 6 1988
ANNUAL SEVEN-DAY MINIMUM	64	Jan 24	59	Aug 9	14	Aug 2 1988
MAXIMUM PEAK FLOW			1200	Feb 26	2910	Sep 26 1986
MAXIMUM PEAK STAGE			9.59	Feb 26	14.26	Sep 26 1986
INSTANTANEOUS LOW FLOW			30	Jan 28	6.6	Aug 7 1988
ANNUAL RUNOFF (CFSM)	1.03		.85		.81
ANNUAL RUNOFF (INCHES)	14.01		11.55		10.95
10 PERCENT EXCEEDS	379		277		312
50 PERCENT EXCEEDS	118		121		101
90 PERCENT EXCEEDS	75		72		43

A - Estimated.