05548280 DATA: Discharge Tables, 2000

Station list Available data
ILLINOIS RIVER BASIN

05548280 NIPPERSINK CREEK NEAR SPRING GROVE, IL

LOCATION.-- Lat 42°26'37", 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 1994-2000.

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.--
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, 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 1999 TO SEPTEMBER 2000 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	172	67	73	76	e65	176	76	130	490	207	201	88
2	131	61	67	81	e64	160	78	125	838	206	170	85
3	117	60	70	89	e64	145	77	122	1100	485	138	86
4	133	63	66	94	e65	135	69	113	787	462	124	75
5	149	65	133	86	e66	125	73	103	560	403	130	72

6	125	57	159	83	e68	120	70	99	479	326	175	65
7	112	58	142	78	e68	118	67	94	384	267	159	66
8	109	61	123	79	e66	106	86	98	306	240	157	65
9	94	67	113	82	e69	103	99	122	261	231	134	66
10	91	63	110	99	e71	88	99	287	230	491	122	67

11	88	55	111	114	76	87	99	336	222	731	115	72
12	92	60	106	107	75	88	97	395	635	656	110	192
13	84	61	98	101	77	88	94	336	1850	438	114	174
14	80	59	92	89	81	87	90	249	2650	318	106	154
15	81	59	96	93	78	87	85	203	1990	274	104	151

16	81	59	101	86	78	86	75	182	1340	244	89	126
17	78	61	91	80	75	86	79	172	831	209	123	108
18	78	64	e88	e75	82	84	82	351	594	193	141	190
19	81	69	e85	e72	94	84	116	869	468	184	122	151
20	75	57	e83	e69	84	106	384	1160	407	178	111	180

21	76	57	e80	e68	81	114	615	868	377	169	105	247
22	68	60	e77	e68	108	109	586	586	329	150	103	227
23	62	70	e74	e67	233	102	425	465	299	142	103	487
24	65	81	e72	e66	367	101	312	360	299	136	100	417
25	71	73	e72	e64	435	104	245	277	334	134	98	322

26	65	73	e73	e63	374	97	203	238	312	131	90	226
27	70	71	e74	e63	308	96	173	258	282	121	90	198
28	76	68	e74	e64	240	90	155	288	247	114	89	170
29	69	66	e74	e65	207	88	142	310	242	112	88	161
30	76	66	e76	e66	---	84	134	286	225	104	89	144

31	65	---	76	e66	---	82	---	291	---	172	88	---

TOTAL	2814	1911	2829	2453	3819	3226	4985	9773	19368	8228	3688	4832
MEAN	90.8	63.7	91.3	79.1	132	104	166	315	646	265	119	161
MAX	172	81	159	114	435	176	615	1160	2650	731	201	487
MIN	62	55	66	63	64	82	67	94	222	104	88	65
CFSM	.47	.33	.48	.41	.69	.54	.87	1.64	3.36	1.38	.62	.84
IN.	.55	.37	.55	.48	.74	.63	.97	1.89	3.75	1.59	.71	.94

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1966 - 2000, BY WATER YEAR (WY)
MEAN	102	123	143	122	165	248	260	187	184	118	89.3	113
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 1999 CALENDAR YEAR		FOR 2000 WATER YEAR		WATER YEARS 1966 - 2000
ANNUAL TOTAL	67431		67926
ANNUAL MEAN	185		186		155
HIGHEST ANNUAL MEAN					288	1974
LOWEST ANNUAL MEAN					52.4	1977
HIGHEST DAILY MEAN	2660	Jun 15	2650	Jun 14	2660	Jun 15 1999
LOWEST DAILY MEAN	45	Sep 25	55	Nov 11	10	Aug 6 1988
ANNUAL SEVEN-DAY MINIMUM	49	Sep 19	59	Nov 11	14	Aug 2 1988
INSTANTANEOUS PEAK FLOW			2860	Jun 14	2910	Sep 26 1986
INSTANTANEOUS PEAK STAGE			13.71	Jun 14	14.26	Sep 26 1986
INSTANTANEOUS LOW FLOW			53	Nov 11,14,20,21	6.6	Aug 7 1988
ANNUAL RUNOFF (CFSM)	.96		.97		.80
ANNUAL RUNOFF (INCHES)	13.06		13.16		10.94
10 PERCENT EXCEEDS	352		379		313
50 PERCENT EXCEEDS	119		101		100
90 PERCENT EXCEEDS	61		66		42