USGS CD-ROM: Current Year Discharge

03346000 NORTH FORK EMBARRAS RIVER NEAR OBLONG, IL

LOCATION.--Lat 39°00'37", long 87°56'47", in NW¼NW¼ sec.35, T.7 N., R.14 W., Crawford County, Hydrologic Unit 05120112, on left bank at downstream side of bridge on State Highway 33, 0.8 mi upstream from railroad bridge, 2 mi west of Oblong, and at mile 10.5.

DRAINAGE AREA.--318 mi².

PERIOD OF RECORD.--October 1940 to current year.

GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 456.19 ft above sea level. Prior to Dec. 11, 1940, nonrecording gage and Dec. 11, 1940, to Sept. 30, 1964, water-stage recorder at same site at datum 2.00 ft higher. Oct. 8, 1971 to May 15, 1979, water-stage recorder at site 0.8 mi downstream at present datum.

REMARKS.--Records good 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	.86	1.6	e3.0	11	55	105	911	4250	199	327	79	14
2	.92	2.0	21	12	47	118	528	1450	91	119	57	14
3	.91	1.8	19	11	42	99	321	1640	62	76	49	13
4	.89	e1.3	15	11	38	90	1330	7940	50	139	41	13
5	.82	e.95	11	23	34	116	1640	6750	53	74	811	12

6	.74	e1.2	9.6	101	33	121	434	2800	63	49	2420	11
7	.71	e1.8	7.8	284	31	86	274	1570	82	662	1150	9.8
8	.66	e2.3	6.9	673	29	235	844	4150	66	2330	496	9.6
9	.74	e2.0	6.8	866	27	955	714	2110	525	1140	740	e9.0
10	.72	e1.6	7.4	296	26	780	290	431	868	173	484	e8.4

11	.66	e1.4	6.8	165	30	288	217	262	363	106	618	e7.5
12	.63	e1.3	6.2	116	46	155	171	198	1060	73	303	e6.5
13	.72	e1.2	7.8	91	65	129	153	163	1060	54	145	e6.2
14	.74	e2.6	9.0	68	53	114	271	137	711	43	101	6.7
15	.69	e2.3	7.7	70	41	107	402	114	393	40	79	6.7

16	.51	e1.9	6.9	81	50	90	2330	99	1150	36	64	7.5
17	.43	e1.6	6.5	69	428	194	2310	86	538	31	57	7.5
18	.43	e1.4	5.9	60	1470	1490	402	75	220	29	55	9.1
19	.42	e1.3	5.1	52	734	1750	248	71	1020	27	44	9.8
20	.39	e1.2	4.8	43	325	1340	205	68	1100	25	37	8.2

21	.37	e1.7	5.3	44	302	2270	182	153	309	883	31	8.1
22	.32	e1.5	7.2	56	214	1750	165	119	204	1190	28	10
23	.32	e1.3	7.3	201	157	421	151	294	442	1120	24	13
24	.51	e1.1	19	250	123	272	137	865	375	1710	21	e10
25	.61	e1.0	31	176	98	217	126	484	180	1240	21	e9.0

26	.71	e.90	69	124	79	187	123	209	127	210	19	e8.0
27	.67	e.85	45	109	78	163	464	154	95	141	18	e7.0
28	.65	e.80	27	118	110	590	209	124	77	108	17	6.5
29	.69	e.75	19	109	---	1370	170	102	71	86	16	6.2
30	.98	e1.0	16	84	---	677	2000	90	511	78	16	5.6

31	1.2	---	12	67	---	312	---	85	---	75	15	---

TOTAL	20.62	43.65	432.0	4441	4765	16591	17722	37043	12065	12394	8056	272.9
MEAN	.67	1.46	13.9	143	170	535	591	1195	402	400	260	9.10
MAX	1.2	2.6	69	866	1470	2270	2330	7940	1150	2330	2420	14
MIN	.32	.75	3.0	11	26	86	123	68	50	25	15	5.6
CFSM	.00	.00	.04	.45	.54	1.68	1.86	3.76	1.26	1.26	.82	.03
IN.	.00	.01	.05	.52	.56	1.94	2.07	4.33	1.41	1.45	.94	.03

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1941 - 1998, BY WATER YEAR (WY)
MEAN	45.1	197	303	376	434	508	484	385	230	128	84.5	72.2
MAX	565	1757	1755	2798	1777	1469	1521	2825	1346	1010	471	900
(WY)	1950	1986	1968	1950	1982	1973	1984	1943	1945	1958	1985	1989
MIN	.013	.13	.56	.92	4.82	2.37	10.4	19.0	4.07	.46	.26	.10
(WY)	1954	1954	1954	1977	1954	1954	1954	1941	1954	1954	1954	1954

SUMMARY STATISTICS	FOR 1997 CALENDAR YEAR		FOR 1998 WATER YEAR		WATER YEARS 1941 - 1998
ANNUAL TOTAL	75433.73		113846.17
ANNUAL MEAN	207		312		270
HIGHEST ANNUAL MEAN					644	1950
LOWEST ANNUAL MEAN					3.88	1954
HIGHEST DAILY MEAN	7500 A	Feb 27	7940	May 4	20300	Jan 4 1950
LOWEST DAILY MEAN	.32	Oct 22,23	.32	Oct 22,23	.00	B
ANNUAL SEVEN-DAY MINIMUM	.38	Oct 17	.38	Oct 17	.00	Sep 13 1953
INSTANTANEOUS PEAK FLOW			9270	May 4	27100 C	Jan 4 1950
INSTANTANEOUS PEAK STAGE			19.46	May 4	24.38 D	Jan 4 1950
INSTANTANEOUS LOW FLOW			.30	Oct 22,23
ANNUAL RUNOFF (CFSM)	.65		.98		.85
ANNUAL RUNOFF (INCHES)	8.82		13.32		11.52
10 PERCENT EXCEEDS	446		894		600
50 PERCENT EXCEEDS	22		68		45
90 PERCENT EXCEEDS	.99		1.0		2.7

A - Estimated.
B - Many days in 1953-54, 1964, 1988.
C - From rating curve extended above 16,000 ft³/s.
D - Present datum.