05580950 DATA: Discharge Tables, 2004

Station list Available data
ILLINOIS RIVER BASIN


LOCATION.-- Lat 40°28'16", long 89°01'48" (NAD of 1927), in NE1/4NW1/4 sec.7, T.23 N., R.2 E., McLean County, Hydrologic Unit 07130009, on left bank at Bloomington-Normal Sanitary District sewage-treatment plant, 250 ft upstream from bridge on Interstate 74, 0.4 mi west of Bloomington, and at mile 48.8.

DRAINAGE AREA.-- 34.4 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
	DISCHARGE: October 1974 to current year.
	STAGE: Water years 1994 to current year.

REVISED RECORDS.-- WDR IL-82-2: Drainage area. WDR IL-87-2: 1985.

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 725.11 ft above NGVD of 1929. Prior to Nov. 4, 1987, 200 ft upstream at same datum.

REMARKS.-- Sewage-treatment plant effluent 300 ft upstream contains publicly supplied water from Lake Bloomington and Lake Evergreen and ground-water sources.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 6,600 ft³/s, Dec. 3, 1982, gage height, 14.02 ft, from floodmark; minimum daily, 9.0 ft³/s, Dec. 25, 1976.

REMARKS FOR CURRENT YEAR.-- Records fair. Effluent from sewage-treatment plant upstream averaged 33.1 ft³/s and contains publicly supplied water from Lake Bloomington and Lake Evergreen and ground-water sources.

Discharge, cubic feet per second, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	21	21	26	30	23	28	103	62	141	24	22	22
2	20	22	25	32	26	27	80	70	94	27	23	21
3	20	38	25	32	30	26	69	46	74	112	23	20
4	20	46	29	74	25	164	59	50	62	73	91	19
5	18	91	53	43	24	274	53	39	54	33	22	17

6	19	29	36	33	25	94	52	35	48	28	19	18
7	18	25	30	31	25	66	49	31	47	27	17	18
8	19	22	29	34	24	57	45	30	46	26	17	19
9	19	21	36	32	25	49	42	29	46	132	19	17
10	20	21	71	30	25	42	39	37	249	201	19	17

11	19	24	39	32	26	40	37	50	142	99	18	16
12	18	23	33	33	25	36	38	64	74	72	18	16
13	19	22	32	31	24	33	37	53	59	68	18	17
14	108	22	32	31	24	46	37	168	53	48	17	16
15	28	22	33	29	23	35	35	67	75	34	17	63

16	24	22	41	29	22	49	34	44	51	30	18	239
17	22	66	32	46	23	45	34	38	45	28	20	43
18	21	477	37	32	32	46	31	213	39	27	21	29
19	22	111	31	30	50	37	30	104	34	26	20	25
20	22	62	29	28	72	34	54	62	31	25	54	24

21	22	44	29	29	43	31	38	48	43	26	21	23
22	22	39	47	27	34	31	31	44	34	27	19	23
23	21	97	93	27	33	32	29	80	29	25	20	22
24	21	67	50	26	32	39	92	60	29	22	158	22
25	99	43	38	25	30	52	122	299	40	22	393	22

26	27	35	37	26	29	282	52	83	28	22	137	22
27	24	31	35	27	28	110	38	61	26	23	57	22
28	25	28	57	25	27	187	36	50	26	23	42	21
29	23	28	41	25	27	133	34	42	26	23	56	21
30	22	27	35	24	---	191	73	747	24	39	30	22

31	22	---	31	23	---	163	---	352	---	24	26	---

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1975 - 2004, BY WATER YEAR (WY)
MEAN	35.5	45.0	50.0	39.8	57.2	78.7	69.9	76.4	55.7	45.6	44.4	40.4
MAX	152	203	201	130	148	238	146	181	118	135	138	178
(WY)	1987	1986	1983	1993	1976	1979	1979	1984	1993	2003	1981	1993
MIN	17.1	17.5	14.0	15.5	22.5	29.6	28.1	28.0	21.1	17.2	16.5	17.0
(WY)	1975	1977	1977	1977	1980	1981	1977	1987	1988	1994	1988	1998

SUMMARY STATISTICS	FOR 2003 CALENDAR YEAR		FOR 2004 WATER YEAR		WATER YEARS 1975 - 2004
ANNUAL TOTAL	18623		18148
ANNUAL MEAN	51.0		49.6		53.2
HIGHEST ANNUAL MEAN					99.6	1993
LOWEST ANNUAL MEAN					31.7	2000
HIGHEST DAILY MEAN	1450	Jul 10	747	May 30	2500	Mar 4 1979
LOWEST DAILY MEAN	18	A	16	B	9.0	Dec 25 1976
ANNUAL SEVEN-DAY MINIMUM	19	Oct 5	17	Sep 8	11	Jul 31 2001
MAXIMUM PEAK FLOW			2600	May 30	6600	Dec 3 1982
MAXIMUM PEAK STAGE			8.54	May 30	14.02 C	Dec 3 1982
INSTANTANEOUS LOW FLOW			5.0	Oct 8
10 PERCENT EXCEEDS	78		91		96
50 PERCENT EXCEEDS	32		31		31
90 PERCENT EXCEEDS	22		20		18

Discharge, cubic feet per second, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	21	21	26	30	23	28	103	62	141	24	22	22
2	20	22	25	32	26	27	80	70	94	27	23	21
3	20	38	25	32	30	26	69	46	74	112	23	20
4	20	46	29	74	25	164	59	50	62	73	91	19
5	18	91	53	43	24	274	53	39	54	33	22	17

6	19	29	36	33	25	94	52	35	48	28	19	18
7	18	25	30	31	25	66	49	31	47	27	17	18
8	19	22	29	34	24	57	45	30	46	26	17	19
9	19	21	36	32	25	49	42	29	46	132	19	17
10	20	21	71	30	25	42	39	37	249	201	19	17

11	19	24	39	32	26	40	37	50	142	99	18	16
12	18	23	33	33	25	36	38	64	74	72	18	16
13	19	22	32	31	24	33	37	53	59	68	18	17
14	108	22	32	31	24	46	37	168	53	48	17	16
15	28	22	33	29	23	35	35	67	75	34	17	63

16	24	22	41	29	22	49	34	44	51	30	18	239
17	22	66	32	46	23	45	34	38	45	28	20	43
18	21	477	37	32	32	46	31	213	39	27	21	29
19	22	111	31	30	50	37	30	104	34	26	20	25
20	22	62	29	28	72	34	54	62	31	25	54	24

21	22	44	29	29	43	31	38	48	43	26	21	23
22	22	39	47	27	34	31	31	44	34	27	19	23
23	21	97	93	27	33	32	29	80	29	25	20	22
24	21	67	50	26	32	39	92	60	29	22	158	22
25	99	43	38	25	30	52	122	299	40	22	393	22

26	27	35	37	26	29	282	52	83	28	22	137	22
27	24	31	35	27	28	110	38	61	26	23	57	22
28	25	28	57	25	27	187	36	50	26	23	42	21
29	23	28	41	25	27	133	34	42	26	23	56	21
30	22	27	35	24	---	191	73	747	24	39	30	22

31	22	---	31	23	---	163	---	352	---	24	26	---

Discharge, cubic feet per second, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	21	21	26	30	23	28	103	62	141	24	22	22
2	20	22	25	32	26	27	80	70	94	27	23	21
3	20	38	25	32	30	26	69	46	74	112	23	20
4	20	46	29	74	25	164	59	50	62	73	91	19
5	18	91	53	43	24	274	53	39	54	33	22	17

6	19	29	36	33	25	94	52	35	48	28	19	18
7	18	25	30	31	25	66	49	31	47	27	17	18
8	19	22	29	34	24	57	45	30	46	26	17	19
9	19	21	36	32	25	49	42	29	46	132	19	17
10	20	21	71	30	25	42	39	37	249	201	19	17

11	19	24	39	32	26	40	37	50	142	99	18	16
12	18	23	33	33	25	36	38	64	74	72	18	16
13	19	22	32	31	24	33	37	53	59	68	18	17
14	108	22	32	31	24	46	37	168	53	48	17	16
15	28	22	33	29	23	35	35	67	75	34	17	63

16	24	22	41	29	22	49	34	44	51	30	18	239
17	22	66	32	46	23	45	34	38	45	28	20	43
18	21	477	37	32	32	46	31	213	39	27	21	29
19	22	111	31	30	50	37	30	104	34	26	20	25
20	22	62	29	28	72	34	54	62	31	25	54	24

21	22	44	29	29	43	31	38	48	43	26	21	23
22	22	39	47	27	34	31	31	44	34	27	19	23
23	21	97	93	27	33	32	29	80	29	25	20	22
24	21	67	50	26	32	39	92	60	29	22	158	22
25	99	43	38	25	30	52	122	299	40	22	393	22

26	27	35	37	26	29	282	52	83	28	22	137	22
27	24	31	35	27	28	110	38	61	26	23	57	22
28	25	28	57	25	27	187	36	50	26	23	42	21
29	23	28	41	25	27	133	34	42	26	23	56	21
30	22	27	35	24	---	191	73	747	24	39	30	22

31	22	---	31	23	---	163	---	352	---	24	26	---

Discharge, cubic feet per second, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	21	21	26	30	23	28	103	62	141	24	22	22
2	20	22	25	32	26	27	80	70	94	27	23	21
3	20	38	25	32	30	26	69	46	74	112	23	20
4	20	46	29	74	25	164	59	50	62	73	91	19
5	18	91	53	43	24	274	53	39	54	33	22	17

6	19	29	36	33	25	94	52	35	48	28	19	18
7	18	25	30	31	25	66	49	31	47	27	17	18
8	19	22	29	34	24	57	45	30	46	26	17	19
9	19	21	36	32	25	49	42	29	46	132	19	17
10	20	21	71	30	25	42	39	37	249	201	19	17

11	19	24	39	32	26	40	37	50	142	99	18	16
12	18	23	33	33	25	36	38	64	74	72	18	16
13	19	22	32	31	24	33	37	53	59	68	18	17
14	108	22	32	31	24	46	37	168	53	48	17	16
15	28	22	33	29	23	35	35	67	75	34	17	63

16	24	22	41	29	22	49	34	44	51	30	18	239
17	22	66	32	46	23	45	34	38	45	28	20	43
18	21	477	37	32	32	46	31	213	39	27	21	29
19	22	111	31	30	50	37	30	104	34	26	20	25
20	22	62	29	28	72	34	54	62	31	25	54	24

21	22	44	29	29	43	31	38	48	43	26	21	23
22	22	39	47	27	34	31	31	44	34	27	19	23
23	21	97	93	27	33	32	29	80	29	25	20	22
24	21	67	50	26	32	39	92	60	29	22	158	22
25	99	43	38	25	30	52	122	299	40	22	393	22

26	27	35	37	26	29	282	52	83	28	22	137	22
27	24	31	35	27	28	110	38	61	26	23	57	22
28	25	28	57	25	27	187	36	50	26	23	42	21
29	23	28	41	25	27	133	34	42	26	23	56	21
30	22	27	35	24	---	191	73	747	24	39	30	22

31	22	---	31	23	---	163	---	352	---	24	26	---