05577500 DATA: Discharge Tables, 1999

Station list Available data
ILLINOIS RIVER BASIN

05577500 SPRING CREEK AT SPRINGFIELD, IL

LOCATION.--Lat 39°48'57", long 89°41'57", in NW1/4NE1/4 sec.30, T.16 N., R.5 W., Sangamon County, Hydrologic Unit 07130008, on right bank at downstream side of bridge on State Highways 125 and 97 (Jefferson Street), 0.1 mi east of intersection of State Highway 4 (Veterans Parkway) and State Highways 125 and 97 (Jefferson Street), in Springfield, and at mile 8.2.

DRAINAGE AREA.--107 mi².

PERIOD OF RECORD.--January to September 1948, December 1948 to current year.

GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 524.65 ft above sea level. Prior to Dec. 22, 1948, and Mar. 24, 1981, to Mar. 30, 1983, nonrecording gage at same site and datum.

REMARKS.--Records fair except those for estimated daily discharges, which are poor. Gage-height telemeter at station.

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	4.4	18	20	7.5	233	76	58	150	55	13	.55	1.6
2	2.3	74	18	6.2	207	90	57	128	121	2.8	.13	.89
3	4.1	106	16	6.5	173	96	80	114	89	.92	.05	.80
4	2.8	109	16	e6.8	148	83	85	107	78	.33	.01	.70
5	6.5	42	17	7.0	122	83	64	132	158	.21	.01	.40

6	8.1	25	21	7.4	117	93	60	125	101	.34	e.01	.31
7	4.3	19	23	8.1	345	77	54	106	69	.11	.07	.51
8	2.5	18	17	8.9	461	75	57	94	55	.03	6.7	1.2
9	1.9	18	14	e8.0	300	93	124	84	42	.01	2.1	.80
10	1.3	45	12	e7.6	211	97	87	77	33	e.01	1.0	.82

11	1.1	45	11	e7.4	189	97	67	74	32	e.01	.40	.85
12	.97	28	11	e7.2	165	130	59	96	57	e.01	16	.98
13	.67	27	11	e7.0	136	162	51	169	183	e.01	151	.98
14	.41	33	12	e6.8	120	154	52	149	215	e.01	15	.56
15	.33	26	12	e6.6	116	138	146	119	124	e.01	3.2	.39

16	1.4	34	11	e8.0	122	126	361	108	90	e.01	1.2	.35
17	9.2	72	11	e30	112	120	452	166	72	e.01	.76	.26
18	12	73	12	60	102	99	326	199	59	e.01	.56	.16
19	2.2	67	21	47	96	83	233	139	43	.04	.53	3.6
20	2.8	40	14	37	87	78	192	113	33	.81	.79	.91

21	3.3	26	18	47	80	78	172	103	24	.10	1.0	.60
22	3.4	24	13	174	77	73	151	99	19	e.01	1.3	.60
23	2.4	21	9.6	324	80	70	129	85	15	.01	37	.51
24	1.9	19	8.8	315	81	67	108	77	18	1.2	23	.43
25	1.7	18	8.0	238	77	64	100	68	8.2	.88	3.6	.42

26	1.5	18	8.7	195	75	62	105	63	5.7	1.2	1.2	.37
27	5.6	18	11	205	85	61	118	59	5.7	17	2.4	.24
28	15	17	12	200	88	61	216	50	4.4	5.0	1.7	59
29	25	17	12	152	---	60	276	41	3.4	1.7	1.4	17
30	15	20	10	131	---	57	184	35	1.4	1.7	1.7	.57

31	11	---	5.9	159	---	56	---	34	---	1.2	2.1	---

TOTAL	155.08	1117	417.0	2431.0	4205	2759	4224	3163	1813.8	48.69	276.47	96.81
MEAN	5.00	37.2	13.5	78.4	150	89.0	141	102	60.5	1.57	8.92	3.23
MAX	25	109	23	324	461	162	452	199	215	17	151	59
MIN	.33	17	5.9	6.2	75	56	51	34	1.4	.01	.01	.16
CFSM	.05	.35	.13	.73	1.40	.83	1.32	.95	.57	.01	.08	.03
IN.	.05	.39	.14	.85	1.46	.96	1.47	1.10	.63	.02	.10	.03

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1948 - 1999, BY WATER YEAR (WY)
MEAN	22.4	29.6	56.2	58.5	84.4	112	132	126	94.9	43.4	27.0	21.1
MAX	244	225	523	282	281	374	605	617	418	358	292	296
(WY)	1960	1986	1983	1950	1975	1978	1957	1996	1990	1981	1981	1993
MIN	.000	.000	.000	.000	.22	.23	.66	.052	8.05	1.38	.016	.000
(WY)	1954	1954	1954	1956	1954	1954	1954	1954	1953	1976	1953	1952

SUMMARY STATISTICS	FOR 1998 CALENDAR YEAR		FOR 1999 WATER YEAR		WATER YEARS 1948 - 1999
ANNUAL TOTAL	37627.87		20706.85
ANNUAL MEAN	103		56.7		67.9
HIGHEST ANNUAL MEAN					156	1993
LOWEST ANNUAL MEAN					2.15	1954
HIGHEST DAILY MEAN	1330	Jun 19	461	Feb 8	5320	May 8 1996
LOWEST DAILY MEAN	.33	Oct 15	.01	A	.00	B
ANNUAL SEVEN-DAY MINIMUM	.88	Oct 10	.01	Jul 9	.00	Sep 1 1949
INSTANTANEOUS PEAK FLOW			497	Feb 8	10700	May 8 1996
INSTANTANEOUS PEAK STAGE			8.33	Feb 8	16.23	May 8 1996
INSTANTANEOUS LOW FLOW			.01	C
ANNUAL RUNOFF (CFSM)	.96		.53		.63
ANNUAL RUNOFF (INCHES)	13.08		7.20		8.62
10 PERCENT EXCEEDS	275		151		155
50 PERCENT EXCEEDS	36		21		22
90 PERCENT EXCEEDS	2.3		.42		.01

A - Several days; July 10-18, and Aug. 6, estimated.
B - Many days in most years.
C - Several days; July 9-19, 22-23, and Aug. 5-7, estimated.