USGS CD-ROM: Current Year Discharge

05577500 SPRING CREEK AT SPRINGFIELD, IL

LOCATION.--Lat 39°48'57", long 89°41'57", in NW¼NE¼ 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 1997 TO SEPTEMBER 1998 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	.01	e.28	18	7.6	45	108	173	569	59	280	1.7	7.4
2	.01	e.50	15	8.1	44	95	132	869	53	172	.99	6.4
3	.01	e.68	13	6.7	38	86	162	577	49	125	.67	4.7
4	e.01	e.64	8.1	23	36	80	297	329	49	101	15	4.2
5	e.01	e2.3	7.4	25	36	71	272	254	77	81	13	3.3

6	e.01	e1.0	6.0	33	33	64	227	226	57	60	3.1	2.3
7	e.01	e.40	5.2	51	30	62	207	350	44	81	1.6	1.9
8	e.01	e.22	4.7	226	28	235	184	414	63	52	1.0	1.5
9	.02	e.12	6.0	211	28	643	147	257	299	36	1.1	1.2
10	.37	e.25	10	122	41	517	117	215	275	31	.83	1.2

11	.16	e.39	8.4	86	179	225	94	176	311	51	1.7	1.2
12	.04	e.36	6.8	71	388	176	87	154	670	32	2.9	1.0
13	1.9	e.39	5.7	55	260	182	134	136	595	24	3.2	.92
14	.21	e.39	5.3	50	179	213	223	105	289	21	3.5	1.8
15	.04	e.38	5.0	56	139	177	214	92	252	18	4.2	10

16	.07	e.36	4.9	44	137	155	198	96	289	16	6.4	4.4
17	.04	.38	4.7	39	188	279	149	69	226	13	6.6	3.2
18	.04	.30	5.1	35	280	680	112	62	299	12	339	3.0
19	.04	.19	4.8	29	220	550	100	58	1330	11	81	2.6
20	.03	.17	4.6	29	182	514	89	96	976	9.3	15	1.9

21	.01	.50	4.5	30	154	699	80	67	388	7.4	9.5	1.5
22	.01	.19	14	29	134	445	74	81	629	8.7	7.0	1.0
23	e.01	.10	6.7	29	121	273	69	137	711	6.4	5.8	.78
24	e.29	.07	59	27	106	232	63	148	425	5.3	5.0	3.2
25	e.19	.06	21	26	95	201	59	145	225	3.9	4.5	8.4

26	e.45	.06	15	25	98	179	58	340	168	3.1	4.0	4.7
27	e.18	3.0	11	28	170	161	49	218	127	2.4	3.8	2.7
28	e.23	19	9.9	38	130	240	65	139	98	2.0	3.8	1.8
29	e.16	2.0	9.8	54	---	205	275	102	192	1.8	5.2	2.5
30	e.10	150	8.7	52	---	169	508	82	330	7.0	3.7	3.7

31	e.22	---	7.7	47	---	175	---	70	---	2.9	4.0	---

TOTAL	4.89	184.68	316.0	1592.4	3519	8091	4618	6633	9555	1277.2	558.79	94.40
MEAN	.16	6.16	10.2	51.4	126	261	154	214	319	41.2	18.0	3.15
MAX	1.9	150	59	226	388	699	508	869	1330	280	339	10
MIN	.01	.06	4.5	6.7	28	62	49	58	44	1.8	.67	.78
CFSM	.00	.06	.10	.48	1.17	2.44	1.44	2.00	2.98	.39	.17	.03
IN.	.00	.06	.11	.55	1.22	2.81	1.61	2.31	3.32	.44	.19	.03

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1948 - 1998, BY WATER YEAR (WY)
MEAN	22.7	29.5	57.1	58.1	83.1	113	131	127	95.6	44.3	27.4	21.5
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 1997 CALENDAR YEAR		FOR 1998 WATER YEAR		WATER YEARS 1948 - 1998
ANNUAL TOTAL	7107.80		36444.36
ANNUAL MEAN	19.5		99.8		68.1
HIGHEST ANNUAL MEAN					156	1993
LOWEST ANNUAL MEAN					2.15	1954
HIGHEST DAILY MEAN	374	Feb 27	1330	Jun 19	5320	May 8 1996
LOWEST DAILY MEAN	.00	Sep 14 - 16	.01	A	.00	B
ANNUAL SEVEN-DAY MINIMUM	.01	Oct 1	.01	Oct 1	.00	Sep 1 1949
INSTANTANEOUS PEAK FLOW			1670	Jun 19	10700	May 8 1996
INSTANTANEOUS PEAK STAGE			10.86	Jun 19	16.23	May 8 1996
INSTANTANEOUS LOW FLOW			.01	A
ANNUAL RUNOFF (CFSM)	.18		.93		.64
ANNUAL RUNOFF (INCHES)	2.47		12.67		8.65
10 PERCENT EXCEEDS	51		275		156
50 PERCENT EXCEEDS	5.7		29		22
90 PERCENT EXCEEDS	.05		.24		.01

A - Several Days in Oct., but may have been less during periods of estimated discharges in Oct.
B - Many days in most years.