USGS CD-ROM: Current Year Discharge

05578500 SALT CREEK NEAR ROWELL, IL

LOCATION.--Lat 40°06'54", long 89°02'57", in NE¼SE¼ sec.11, T.19 N., R.1 E., De Witt County, Hydrologic Unit 07130009, on right bank at downstream side of bridge on County Road 490 E, 0.5 mi upstream from State Highway 54, 0.8 mi upstream from a railroad bridge and Ten Mile Creek, 3.2 mi northwest of Rowell, and at mile 65.3.

DRAINAGE AREA.--335 mi².

PERIOD OF RECORD.--October 1942 to current year.

REVISED RECORDS.--WDR IL-75-1: Drainage area.

GAGE.--Water-stage recorder. Datum of gage is 610.00 ft above sea level (U.S. Army Corps of Engineers bench mark).

REMARKS.--Records good except those for estimated daily discharges, which are poor. Beginning Oct. 12, 1977, flow partially regulated by Clinton Reservoir, 11 mi upstream from gage. Gage-height telemeter at station.

EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 24,500 ft³/s, May 16, 1968, gage height, 29.21 ft; minimum, 0.7 ft³/s, Oct. 4, 1954.

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	13	9.4	284	195	161	319	1000	472	297	794	66	15
2	14	10	250	156	159	306	870	600	268	767	57	13
3	13	8.9	240	142	158	288	829	875	248	667	51	12
4	13	8.8	221	155	159	277	799	1040	241	573	60	12
5	13	8.7	205	169	161	266	709	1120	243	507	62	13

6	12	23	182	188	155	251	648	1100	222	437	60	12
7	12	20	176	213	147	244	605	1120	204	474	65	12
8	12	14	170	450	142	291	575	1440	197	542	78	11
9	12	13	167	513	137	435	727	1680	266	548	75	10
10	15	12	169	542	133	547	811	1710	279	503	69	10

11	12	13	162	561	173	610	753	1500	315	450	64	9.9
12	14	13	158	536	219	597	668	1250	441	394	60	9.7
13	13	17	143	466	238	558	592	1220	430	345	51	9.7
14	16	22	145	423	255	535	596	947	449	310	45	9.7
15	10	17	141	382	260	523	569	742	650	278	40	9.7

16	9.3	15	138	350	271	502	519	641	851	250	58	9.9
17	12	14	134	318	305	764	463	551	1340	223	47	9.7
18	9.3	14	128	294	360	1310	410	471	1770	201	124	9.6
19	8.6	13	124	268	377	1610	381	415	2010	184	79	9.5
20	8.2	13	122	246	392	e2000	351	406	1760	168	62	9.2

21	7.9	14	120	230	398	2140	334	379	1520	153	49	11
22	7.5	19	131	216	399	2140	320	390	1270	152	42	9.3
23	7.2	15	117	207	394	2090	301	480	1360	170	37	8.9
24	7.2	13	141	195	374	1950	279	594	1310	149	31	10
25	8.1	13	180	183	359	1770	267	528	1230	132	25	12

26	19	12	185	174	345	1530	259	501	993	118	23	9.6
27	25	13	199	165	337	1180	277	453	802	102	22	9.1
28	9.7	69	204	163	330	1310	244	409	664	90	20	8.7
29	7.4	87	204	162	---	1340	239	379	590	80	18	9.1
30	7.2	306	197	161	---	1220	281	357	688	80	18	9.7

31	6.9	---	184	161	---	1090	---	307	---	74	17	---

TOTAL	354.5	839.8	5321	8584	7298	29993	15676	24077	22908	9915	1575	314.0
MEAN	11.4	28.0	172	277	261	968	523	777	764	320	50.8	10.5
MAX	25	306	284	561	399	2140	1000	1710	2010	794	124	15
MIN	6.9	8.7	117	142	133	244	239	307	197	74	17	8.7

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1978 - 1998, BY WATER YEAR (WY)
MEAN	131	183	272	233	311	595	521	548	335	248	149	65.8
MAX	1069	1236	1268	1316	975	2129	1704	1648	764	1370	1576	658
(WY)	1994	1986	1983	1993	1982	1982	1979	1995	1998	1981	1981	1993
MIN	8.31	9.77	12.1	11.0	14.9	28.4	91.8	45.2	13.7	8.51	6.57	5.46
(WY)	1989	1989	1996	1980	1989	1989	1996	1988	1988	1988	1988	1988

SUMMARY STATISTICS	FOR 1997 CALENDAR YEAR		FOR 1998 WATER YEAR		WATER YEARS 1978 - 1998
ANNUAL TOTAL	84680.3		126855.3
ANNUAL MEAN	232		348		300
HIGHEST ANNUAL MEAN					601	1993
LOWEST ANNUAL MEAN					105	1980
HIGHEST DAILY MEAN	2020	Mar 1	2140	Mar 21, 22	6960	Apr 13 1994
LOWEST DAILY MEAN	6.9	Oct 31	6.9	Oct 31	3.7	Sep 8 1988
ANNUAL SEVEN-DAY MINIMUM	7.8	Oct 19	7.8	Oct 19	4.1	Sep 4 1988
INSTANTANEOUS PEAK FLOW			2170	Mar 20	7810	Apr 13 1994
INSTANTANEOUS PEAK STAGE			19.19	Mar 20	24.04	Apr 13 1994
INSTANTANEOUS LOW FLOW			6.8	Oct 31-Nov 1
10 PERCENT EXCEEDS	696		904		755
50 PERCENT EXCEEDS	126		197		126
90 PERCENT EXCEEDS	13		10		11