05536215 DATA: Discharge Tables, 2003

Station list Available data
ILLINOIS RIVER BASIN

05536215 THORN CREEK AT GLENWOOD, IL


LOCATION.-- Lat 41°31'49", long 87°37'20" (NAD of 1927), in SW1/4SE1/4 sec.9, T.35 N., R.14 E., Cook County, Hydrologic Unit 07120003, on right bank 20 ft downstream from abandoned Baltimore and Ohio Chicago Terminal Railroad bridge, 0.7 mi north of Chicago Heights, 0.8 mi south of Glenwood, 1.0 mi upstream from Deer Creek, and at mile 9.2.

DRAINAGE AREA.-- 24.7 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
	DISCHARGE: May 1949 to current year. Prior to October 1974, records published with those for streams in the St. Lawrence River basin (WSP 1307, 1727, 1911, 2111, WDR IL 1971-74).
	STAGE: Water years 1994 to current year.

REVISED RECORDS.-- WSP 1437: 1955. WDR IL-75-1: Drainage area.

GAGE.-- Water-stage recorder. Datum of gage is 610.97 ft above NGVD of 1929.

REMARKS.-- Effluent from sewage-treatment plant 1 mi upstream consists of publicly supplied water from Lake Michigan and ground-water sources.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 2,700 ft³/s (estimated), July 18, 1996, gage height unknown; maximum recorded gage height, 11.26 ft, Aug. 17, 1968, may have been higher during period of no gage-height record, July 17-20, 1996; minimum daily, 6.0 ft³/s, July 4, Aug. 21, Sept. 5, 11, 25, 1949.

EXTREMES OUTSIDE PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Flood of Apr. 1947, reached a stage of 12.94 ft, from floodmarks, discharge not determined.

REMARKS FOR CURRENT YEAR.-- Records fair. Effluent from sewage-treatment plant upstream averaged 19.9 ft³/s during the year. The maximum monthly average was 31.2 ft³/s in July and the minimum was 14.7 ft³/s in October.

Discharge, cubic feet per second, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	17	17	17	24	23	21	24	113	24	22	139	80
2	20	17	17	23	22	20	24	42	24	22	147	36
3	17	17	17	23	26	21	24	33	55	22	78	27
4	83	17	16	22	26	21	214	63	29	22	98	22
5	28	21	18	22	22	21	110	213	26	178	52	21

6	21	18	17	23	21	22	46	54	27	83	42	20
7	18	17	18	22	20	23	53	59	26	81	36	21
8	19	17	17	22	20	46	44	46	25	82	30	19
9	18	22	17	21	20	29	36	412	25	61	28	19
10	17	29	17	21	20	25	32	99	25	53	26	19

11	17	19	17	21	20	28	30	210	24	40	36	17
12	18	18	16	20	20	35	28	68	23	31	27	23
13	19	18	17	20	20	76	27	46	23	27	24	20
14	17	20	17	19	20	35	27	51	23	25	24	55
15	17	25	17	19	21	33	25	44	22	199	23	24

16	19	19	17	19	20	31	25	36	23	50	22	20
17	16	19	17	19	21	30	25	33	23	109	26	19
18	17	19	106	19	21	28	24	31	35	114	21	18
19	17	19	54	19	22	38	24	30	30	47	21	19
20	16	18	31	20	23	51	42	46	24	38	20	18

21	16	25	27	19	23	35	27	30	24	690	20	17
22	16	23	25	19	23	29	25	28	23	161	20	27
23	16	19	24	19	21	27	24	27	23	54	19	19
24	16	18	23	19	21	25	23	27	24	43	19	19
25	20	18	23	20	21	30	24	25	23	36	19	17

26	18	18	23	20	21	27	23	25	24	30	23	32
27	17	18	22	21	21	25	23	25	23	214	18	25
28	17	18	22	20	21	31	23	28	25	116	18	19
29	20	17	22	22	---	29	22	27	25	55	41	19
30	17	17	36	20	---	25	96	26	22	42	20	16

31	16	---	28	23	---	24	---	27	---	36	33	---

TOTAL	620	577	755	640	600	941	1194	2024	772	2783	1170	727
MEAN	20.0	19.2	24.4	20.6	21.4	30.4	39.8	65.3	25.7	89.8	37.7	24.2
MAX	83	29	106	24	26	76	214	412	55	690	147	80
MIN	16	17	16	19	20	20	22	25	22	22	18	16

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1949 - 2003, BY WATER YEAR (WY)
MEAN	27.4	33.8	37.8	36.1	42.4	57.5	60.8	50.0	44.6	34.7	29.2	27.9
MAX	87.1	108	172	97.7	136	188	120	153	138	147	85.2	108
(WY)	1955	1991	1983	1993	1997	1979	1999	1996	1993	1996	1968	1961
MIN	11.0	9.31	11.4	12.0	19.3	20.8	19.3	18.2	12.4	14.0	11.8	9.28
(WY)	1950	1950	1954	1954	1964	1981	1971	1954	1949	1952	1949	1949

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR		FOR 2003 WATER YEAR		WATER YEARS 1949 - 2003
ANNUAL TOTAL	14269		12803
ANNUAL MEAN	39.1		35.1		40.3
HIGHEST ANNUAL MEAN					67.9	1993
LOWEST ANNUAL MEAN					24.8	1954
HIGHEST DAILY MEAN	808	May 12	690	Jul 21	1500	A
LOWEST DAILY MEAN	15	B	16	B	6.0	C
ANNUAL SEVEN-DAY MINIMUM	15	Aug 7	16	Oct 17	8.5	Sep 5 1949
MAXIMUM PEAK FLOW			1580	Jul 21	2700 D	Jul 18 1996
MAXIMUM PEAK STAGE			10.34	Jul 21	11.26 E	Aug 17 1968
INSTANTANEOUS LOW FLOW			6.6	Oct 1	0.00 F	Jun 3 1992
10 PERCENT EXCEEDS	62		54		68
50 PERCENT EXCEEDS	24		23		24
90 PERCENT EXCEEDS	17		17		16

	A - Aug. 17, 1968; July 18, 1996 (estimated).
	B - Several days.
	C - July 4, Aug. 21, Sept. 5, 11, 25, 1949.
	D - Estimated, gage height unknown.
	E - May have been higher during period of no gage-height record, July 17-20, 1996.
	F - No effuent from sewage-treatment plant because of temporary equipment repair.

Discharge, cubic feet per second, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	17	17	17	24	23	21	24	113	24	22	139	80
2	20	17	17	23	22	20	24	42	24	22	147	36
3	17	17	17	23	26	21	24	33	55	22	78	27
4	83	17	16	22	26	21	214	63	29	22	98	22
5	28	21	18	22	22	21	110	213	26	178	52	21

6	21	18	17	23	21	22	46	54	27	83	42	20
7	18	17	18	22	20	23	53	59	26	81	36	21
8	19	17	17	22	20	46	44	46	25	82	30	19
9	18	22	17	21	20	29	36	412	25	61	28	19
10	17	29	17	21	20	25	32	99	25	53	26	19

11	17	19	17	21	20	28	30	210	24	40	36	17
12	18	18	16	20	20	35	28	68	23	31	27	23
13	19	18	17	20	20	76	27	46	23	27	24	20
14	17	20	17	19	20	35	27	51	23	25	24	55
15	17	25	17	19	21	33	25	44	22	199	23	24

16	19	19	17	19	20	31	25	36	23	50	22	20
17	16	19	17	19	21	30	25	33	23	109	26	19
18	17	19	106	19	21	28	24	31	35	114	21	18
19	17	19	54	19	22	38	24	30	30	47	21	19
20	16	18	31	20	23	51	42	46	24	38	20	18

21	16	25	27	19	23	35	27	30	24	690	20	17
22	16	23	25	19	23	29	25	28	23	161	20	27
23	16	19	24	19	21	27	24	27	23	54	19	19
24	16	18	23	19	21	25	23	27	24	43	19	19
25	20	18	23	20	21	30	24	25	23	36	19	17

26	18	18	23	20	21	27	23	25	24	30	23	32
27	17	18	22	21	21	25	23	25	23	214	18	25
28	17	18	22	20	21	31	23	28	25	116	18	19
29	20	17	22	22	---	29	22	27	25	55	41	19
30	17	17	36	20	---	25	96	26	22	42	20	16

31	16	---	28	23	---	24	---	27	---	36	33	---

Discharge, cubic feet per second, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	17	17	17	24	23	21	24	113	24	22	139	80
2	20	17	17	23	22	20	24	42	24	22	147	36
3	17	17	17	23	26	21	24	33	55	22	78	27
4	83	17	16	22	26	21	214	63	29	22	98	22
5	28	21	18	22	22	21	110	213	26	178	52	21

6	21	18	17	23	21	22	46	54	27	83	42	20
7	18	17	18	22	20	23	53	59	26	81	36	21
8	19	17	17	22	20	46	44	46	25	82	30	19
9	18	22	17	21	20	29	36	412	25	61	28	19
10	17	29	17	21	20	25	32	99	25	53	26	19

11	17	19	17	21	20	28	30	210	24	40	36	17
12	18	18	16	20	20	35	28	68	23	31	27	23
13	19	18	17	20	20	76	27	46	23	27	24	20
14	17	20	17	19	20	35	27	51	23	25	24	55
15	17	25	17	19	21	33	25	44	22	199	23	24

16	19	19	17	19	20	31	25	36	23	50	22	20
17	16	19	17	19	21	30	25	33	23	109	26	19
18	17	19	106	19	21	28	24	31	35	114	21	18
19	17	19	54	19	22	38	24	30	30	47	21	19
20	16	18	31	20	23	51	42	46	24	38	20	18

21	16	25	27	19	23	35	27	30	24	690	20	17
22	16	23	25	19	23	29	25	28	23	161	20	27
23	16	19	24	19	21	27	24	27	23	54	19	19
24	16	18	23	19	21	25	23	27	24	43	19	19
25	20	18	23	20	21	30	24	25	23	36	19	17

26	18	18	23	20	21	27	23	25	24	30	23	32
27	17	18	22	21	21	25	23	25	23	214	18	25
28	17	18	22	20	21	31	23	28	25	116	18	19
29	20	17	22	22	---	29	22	27	25	55	41	19
30	17	17	36	20	---	25	96	26	22	42	20	16

31	16	---	28	23	---	24	---	27	---	36	33	---

Discharge, cubic feet per second, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	17	17	17	24	23	21	24	113	24	22	139	80
2	20	17	17	23	22	20	24	42	24	22	147	36
3	17	17	17	23	26	21	24	33	55	22	78	27
4	83	17	16	22	26	21	214	63	29	22	98	22
5	28	21	18	22	22	21	110	213	26	178	52	21

6	21	18	17	23	21	22	46	54	27	83	42	20
7	18	17	18	22	20	23	53	59	26	81	36	21
8	19	17	17	22	20	46	44	46	25	82	30	19
9	18	22	17	21	20	29	36	412	25	61	28	19
10	17	29	17	21	20	25	32	99	25	53	26	19

11	17	19	17	21	20	28	30	210	24	40	36	17
12	18	18	16	20	20	35	28	68	23	31	27	23
13	19	18	17	20	20	76	27	46	23	27	24	20
14	17	20	17	19	20	35	27	51	23	25	24	55
15	17	25	17	19	21	33	25	44	22	199	23	24

16	19	19	17	19	20	31	25	36	23	50	22	20
17	16	19	17	19	21	30	25	33	23	109	26	19
18	17	19	106	19	21	28	24	31	35	114	21	18
19	17	19	54	19	22	38	24	30	30	47	21	19
20	16	18	31	20	23	51	42	46	24	38	20	18

21	16	25	27	19	23	35	27	30	24	690	20	17
22	16	23	25	19	23	29	25	28	23	161	20	27
23	16	19	24	19	21	27	24	27	23	54	19	19
24	16	18	23	19	21	25	23	27	24	43	19	19
25	20	18	23	20	21	30	24	25	23	36	19	17

26	18	18	23	20	21	27	23	25	24	30	23	32
27	17	18	22	21	21	25	23	25	23	214	18	25
28	17	18	22	20	21	31	23	28	25	116	18	19
29	20	17	22	22	---	29	22	27	25	55	41	19
30	17	17	36	20	---	25	96	26	22	42	20	16

31	16	---	28	23	---	24	---	27	---	36	33	---