05572000 DATA: Discharge Tables, 2005

ILLINOIS RIVER BASIN

05572000 SANGAMON RIVER AT MONTICELLO, IL


LOCATION.-- Lat 40°01'51", long 88°35'20" (NAD of 1927), in NE1/4SW1/4 sec.12, T.18 N., R.5 E., Piatt County, Hydrologic Unit 07130006, on right downstream side of highway bridge, 0.5 mi west of Monticello, and at mile 162.2.

DRAINAGE AREA.-- 550 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
	DISCHARGE: February 1908 to December 1912, June 1914 to current year. Monthly discharge only for some periods, published in WSP 1308. Published as "near Monticello" 1910-12.
	STAGE: Water years 1994 to current year.
SURFACE-WATER QUALITY
	CHEMICAL: Water years 1990-92, 1997-98, and 2001 to current year.
	MISCELLANEOUS: Water years 2004 and 2005; Contaminants in streambed sediments, July 1996; contaminants in fish tissue, July 1996; streambank sediment size, October 1997; streambed sediment size, October 1997.
BIOLOGICAL
	ALGAE: Water years 1996-98 and 2002-05.
	BENTHIC MACROINVERTEBRATES: Water years 1996-98 and 2002-05.
	FISH: Water years 1997-98 and 2002-05
	HABITAT: Water years 1996-98 and 2002-05.

REVISED RECORDS.-- WSP 525: 1920. WSP 1115: 1946-47. WSP 1208: 1915-16, 1918-20, 1927, 1929, 1939. WSP 1508: 1908(M), 1917, 1928(M). WDR IL-81-2: 1909(P), 1912(P), 1915(P), 1919-32(P), 1935(P), 1937-38(P), 1940-41(P), 1944(P), 1946-47(P). WDR IL-89-2: 1988.

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 625.89 ft above NGVD of 1929 (625.66 ft NAVD 1988). Prior to Sept. 30, 1964, nonrecording gage at site 0.2 mi downstream at same datum. Oct. 1, 1964, to Oct. 22, 1971, nonrecording gage at present site and datum.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 19,000 ft³/s, Oct. 4, 1926, gage height, 18.50 ft, from graph based on gage readings, site then in use; maximum gage height, 19.06 ft, Apr. 13, 1994, discharge, 15,900 ft³/s; no flow Aug. 28, Sept. 5, 11, 17, 18, Oct. 30, 31, Nov. 1, 1988.

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

Discharge, cubic feet per second, WATER YEAR OCTOBER 2004 TO SEPTEMBER 2005 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	15	514	3110	e230	370	548	409	342	129	124	47	7.4
2	14	798	2870	246	343	503	431	316	124	92	38	6.9
3	13	1100	2520	377	327	452	413	295	124	67	30	6.2
4	14	1250	2220	1160	320	422	450	276	125	54	27	5.8
5	13	1260	1850	2360	344	404	424	261	121	50	25	5.5

6	12	1050	1460	4440	456	387	384	249	115	45	21	5.2
7	12	824	e1800	4740	675	379	358	241	109	41	20	4.9
8	14	645	2650	3960	1150	365	334	236	103	39	25	4.6
9	13	513	2880	2980	1570	346	313	230	100	34	22	4.2
10	12	432	3270	2280	1680	326	296	228	103	29	18	4.0

11	12	389	2600	2010	1490	318	284	221	120	25	15	3.8
12	15	349	1920	3170	1120	313	314	220	107	30	14	3.6
13	20	306	1400	6620	1060	299	380	209	105	36	15	3.2
14	20	273	1000	9360	2140	278	356	199	191	48	16	4.5
15	20	251	774	10800	2450	262	350	192	251	58	19	6.6

16	26	238	662	7530	2540	252	324	186	219	47	22	5.2
17	30	231	593	3880	2400	249	300	178	172	40	21	7.3
18	49	234	543	2670	1980	247	288	170	138	40	18	8.3
19	121	321	493	1960	1450	244	276	176	119	96	78	16
20	136	427	449	1330	1030	237	267	196	106	170	27	11

21	157	474	401	909	875	227	380	287	98	80	20	10
22	134	430	380	729	857	226	620	268	90	55	19	11
23	119	372	279	595	848	299	821	225	83	113	16	11
24	111	442	e260	511	795	500	949	199	76	172	16	7.7
25	102	944	e240	e480	729	624	858	181	71	97	14	20

26	105	1260	e230	e470	670	766	687	167	66	70	13	17
27	197	1590	e220	e460	618	738	561	158	61	56	11	14
28	268	2230	e210	e470	580	647	468	151	55	111	9.8	23
29	373	2410	e210	473	---	547	408	146	52	146	9.1	23
30	450	2780	e210	440	---	485	373	140	128	93	8.0	18

31	527	---	e220	404	---	448	---	134	---	62	7.7	---

TOTAL	3124	24337	37924	78044	30867	12338	13076	6677	3461	2220	661.6	278.9
MEAN	101	811	1223	2518	1102	398	436	215	115	71.6	21.3	9.30
MAX	527	2780	3270	10800	2540	766	949	342	251	172	78	23
MIN	12	231	210	230	320	226	267	134	52	25	7.7	3.2
CFSM	0.18	1.47	2.22	4.58	2.00	0.72	0.79	0.39	0.21	0.13	0.04	0.02
IN.	0.21	1.65	2.57	5.28	2.09	0.83	0.88	0.45	0.23	0.15	0.04	0.02

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1908 - 2005, BY WATER YEAR (WY)
MEAN	170	249	350	435	587	714	798	723	511	282	148	113
MAX	2868	2842	2155	2636	1937	2472	2753	3609	2081	1585	1486	2427
(WY)	1927	1986	1928	1950	2001	1979	1922	1908	1974	1993	1981	1926
MIN	1.32	5.50	3.67	3.43	10.0	20.2	57.6	42.6	19.3	3.85	1.76	0.48
(WY)	1989	1915	1964	1977	1931	1931	1931	1934	1934	1988	1988	1988

SUMMARY STATISTICS	FOR 2004 CALENDAR YEAR		FOR 2005 WATER YEAR		WATER YEARS 1908 - 2005
ANNUAL TOTAL	241659		213008.5
ANNUAL MEAN	660		584		420
HIGHEST ANNUAL MEAN					1105	1927
LOWEST ANNUAL MEAN					68.0	1934
HIGHEST DAILY MEAN	5070	Mar 29	10800	Jan 15	18700	Oct 4 1926
LOWEST DAILY MEAN	12	A	3.2	Sep 13	0.00	B
ANNUAL SEVEN-DAY MINIMUM	13	Oct 5	4.0	Sep 8	0.07	Sep 11 1988
MAXIMUM PEAK FLOW			11100	Jan 15	19000 C	Oct 4 1926
MAXIMUM PEAK STAGE			17.77	Jan 15	19.06 D	Apr 13 1994
INSTANTANEOUS LOW FLOW			3.0	Sep 13, 15
ANNUAL RUNOFF (CFSM)	1.20		1.06		0.764
ANNUAL RUNOFF (INCHES)	16.34		14.41		10.38
10 PERCENT EXCEEDS	1920		1580		1100
50 PERCENT EXCEEDS	297		238		159
90 PERCENT EXCEEDS	28		14		12

	A - Oct. 6, 7, 10, 11.
	B - Aug. 28, Sept. 5, 11, 17, 18, Oct. 30 to Nov. 1, 1988.
	C - Gage height, 18.50 ft. from graph based on gage readings. Site then in use.
	D - Discharge 15,900 ft³/s.

Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data