USGS CD-ROM: Current Year Discharge

05579500 LAKE FORK NEAR CORNLAND, IL

LOCATION.--Lat 39°57'00", long 89°23'10", in NW¼ SW¼ sec.1, T.17 N., R.3 W., Logan County, Hydrologic Unit 07130009, on right bank at downstream side of bridge on State Highway 54, 100 ft upstream from a railroad bridge, 2.0 mi northeast of Cornland, 8 mi downstream from Jones Fork, and at mile 12.9.

DRAINAGE AREA.--214 mi².

PERIOD OF RECORD.--January 1948 to current year.

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

GAGE.--Water-stage recorder. Datum of gage is 555.06 ft above sea level. Prior to Sept. 6, 1973, nonrecording gage at same site and datum.

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

EXTREMES OUTSIDE PERIOD OF RECORD.--Flood in May 1943 reached a stage of 23.4 ft, from floodmarks, discharge 29,000 ft³/s, by contracted-opening measurement of peak flow.

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	2.0	3.1	256	65	118	214	e450	781	e250	526	45	17
2	1.9	3.4	149	54	112	198	e400	1020	e240	428	42	17
3	2.0	3.5	105	50	99	188	e350	999	224	376	38	15
4	2.0	3.4	81	47	99	171	e390	1130	215	341	47	14
5	2.1	3.6	66	49	98	152	e330	e840	215	313	85	14

6	2.1	4.4	51	67	93	144	e300	e600	198	288	83	13
7	2.0	4.7	43	121	88	142	e370	e800	184	372	60	14
8	1.9	4.0	38	400	84	182	e550	e1040	180	479	48	12
9	1.9	3.7	35	681	80	332	e450	e800	308	338	42	12
10	2.0	3.6	35	515	81	339	e380	e650	338	302	38	11

11	2.1	3.4	35	407	139	322	e330	e570	355	259	34	11
12	3.7	5.3	39	343	261	270	e300	e510	1340	236	31	11
13	2.8	3.3	42	283	232	268	285	e460	1100	212	28	11
14	2.5	2.8	43	242	201	317	382	e420	779	190	27	11
15	2.7	3.5	39	229	180	300	377	e380	1380	169	29	11

16	2.7	3.4	37	201	179	278	347	e350	1480	154	32	11
17	2.4	3.3	35	181	240	465	300	e320	e1000	138	27	11
18	2.6	3.2	32	156	447	955	270	e300	e700	127	175	11
19	2.4	3.4	30	142	413	747	260	287	1660	116	128	11
20	2.8	3.5	28	134	370	1010	248	e270	e1130	102	59	10

21	2.9	3.9	25	128	338	1240	237	257	e840	92	42	11
22	3.6	3.8	27	118	309	1100	225	262	e740	106	34	10
23	2.5	3.9	29	112	286	e880	212	435	1320	106	30	9.7
24	2.0	4.6	39	106	254	633	204	618	e1020	84	26	9.4
25	2.3	3.4	90	98	230	e550	198	e530	e600	76	23	10

26	3.5	3.8	99	96	226	e480	194	e440	e370	70	21	10
27	3.9	3.8	87	96	245	e430	172	e370	e320	64	20	9.4
28	4.2	5.7	78	116	232	e1000	166	e330	e290	59	20	8.8
29	3.9	8.3	75	133	---	e830	215	e310	e420	55	22	8.7
30	3.4	116	68	127	---	e570	273	e290	772	52	19	9.0

31	3.2	---	55	118	---	e510	---	e270	---	51	18	---

TOTAL	82.0	229.7	1891	5615	5734	15217	9165	16639	19968	6281	1373	344.0
MEAN	2.65	7.66	61.0	181	205	491	306	537	666	203	44.3	11.5
MAX	4.2	116	256	681	447	1240	550	1130	1660	526	175	17
MIN	1.9	2.8	25	47	80	142	166	257	180	51	18	8.7
CFSM	.01	.04	.29	.85	.96	2.29	1.43	2.51	3.11	.95	.21	.05
IN.	.01	.04	.33	.98	1.00	2.65	1.59	2.89	3.47	1.09	.24	.06

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1948 - 1998, BY WATER YEAR (WY)
MEAN	65.4	80.6	148	151	211	265	292	296	232	134	74.4	43.6
MAX	680	1009	1260	988	712	1116	1016	1024	1099	772	887	546
(WY)	1978	1986	1983	1950	1959	1979	1979	1995	1974	1981	1981	1993
MIN	2.02	2.06	2.46	4.01	5.02	6.56	16.7	7.27	17.0	7.20	3.84	1.57
(WY)	1955	1955	1964	1977	1963	1954	1954	1954	1963	1954	1988	1954

SUMMARY STATISTICS	FOR 1997 CALENDAR YEAR		FOR 1998 WATER YEAR		WATER YEARS 1948 - 1998
ANNUAL TOTAL	27868.5		82538.7
ANNUAL MEAN	76.4		226		166
HIGHEST ANNUAL MEAN					372	1993
LOWEST ANNUAL MEAN					8.89	1954
HIGHEST DAILY MEAN	989	Feb 27	1660	Jun 19	7000	Dec 4 1982
LOWEST DAILY MEAN	1.9	Oct 2, 8, 9	1.9	Oct 2, 8, 9	.77	Sep 16 1988
ANNUAL SEVEN-DAY MINIMUM	2.0	Oct 2	2.0	Oct 2	.96	Sep 7 1988
INSTANTANEOUS PEAK FLOW			1740	Jun 19	8930	Apr 12 1979
INSTANTANEOUS PEAK STAGE			15.34	Jun 19	23.11	Apr 12 1979
INSTANTANEOUS LOW FLOW			1.3	Oct 2	.30	Sep 16 1988
ANNUAL RUNOFF (CFSM)	.36		1.06		.78
ANNUAL RUNOFF (INCHES)	4.84		14.35		10.55
10 PERCENT EXCEEDS	211		582		400
50 PERCENT EXCEEDS	30		116		62
90 PERCENT EXCEEDS	3.1		3.5		6.6