05439500 DATA: Discharge Tables, 1999

Station list Available data
ROCK RIVER BASIN

05439500 SOUTH BRANCH KISHWAUKEE RIVER NEAR FAIRDALE, IL

LOCATION.--Lat 42°06'39", long 88°54'02", in SE1/4SE1/4 sec.17, T.42 N., R.3 E., De Kalb County, Hydrologic Unit 07090006, on right bank at downstream side of bridge on Irene Road, 1.2 mi downstream from Owens Creek, 1.8 mi northeast of Fairdale, and at mile 11.0.

DRAINAGE AREA.--387 mi².

PERIOD OF RECORD.--October 1939 to current year. Monthly discharge only for some periods, published in WSP 1308.

REVISED RECORDS.--WSP 1508: 1940, 1942(M). WDR IL-75-1: Drainage area.

GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 733.90 ft above sea level (levels by U.S. Army Corps of Engineers). Prior to May 1, 1940, nonrecording gage at same site and datum. Prior to Nov. 7, 1986, water-stage recorder on left bank at upstream side of bridge at same site and datum.

REMARKS.--Records good except those for estimated daily discharges, which are poor. Effluent from sewage-treatment plants 36 mi upstream averaged 15.8 ft³/s during the year. The maximum monthly average was 22.7 ft³/s in April, and the minimum was 10.3 ft³/s in August. Gage-height telemeter at station.

EXTREMES OUTSIDE PERIOD OF RECORD.--A stage of 11.9 ft occurred in March 1937, from information by a local resident.

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	43	213	172	e130	904	327	229	1040	534	293	59	53
2	46	198	149	e115	1100	315	222	859	1830	278	54	48
3	42	189	149	e100	1290	349	212	727	1500	251	50	45
4	64	173	149	e110	1100	339	210	628	991	229	48	43
5	73	163	139	e140	872	315	209	564	769	209	46	40

6	116	154	158	e138	747	303	196	884	603	194	45	37
7	100	146	780	e133	678	267	188	1140	526	177	45	34
8	85	143	925	e131	631	e257	185	858	486	162	46	37
9	72	142	627	e129	582	e250	435	678	407	173	44	34
10	61	514	465	e126	578	e248	551	572	741	184	43	32

11	53	1120	385	e122	653	e242	426	513	1290	149	41	31
12	47	805	334	e120	1080	238	340	977	1330	134	43	30
13	47	550	301	e118	1020	235	290	1560	6120	121	45	33
14	43	452	273	e117	707	237	273	1590	5910	111	47	42
15	46	380	251	e116	587	251	289	1120	3750	104	41	35

16	46	327	243	e114	527	317	1090	860	2640	95	36	32
17	143	290	228	e113	477	727	1540	1160	1750	99	36	30
18	1710	255	216	e112	420	1120	1200	1170	1110	97	35	30
19	1810	243	208	e111	376	904	867	915	872	90	36	31
20	1360	226	186	e110	339	656	690	725	742	113	36	37

21	790	205	178	e110	305	543	620	630	646	156	36	50
22	555	196	e140	e1000	287	455	2370	743	595	272	34	36
23	428	194	e150	e2600	277	389	4770	682	617	235	34	34
24	352	182	e160	3660	265	350	3080	590	585	152	1190	30
25	295	176	e168	2940	255	314	2570	498	495	121	668	29

26	260	175	e170	2590	242	286	1820	431	429	104	274	29
27	237	163	e170	2050	277	274	1460	383	391	100	159	39
28	289	156	e150	1600	328	267	2340	354	364	84	112	1390
29	291	156	e130	1340	---	256	1940	328	333	76	87	1920
30	264	163	e95	1030	---	236	1450	306	302	69	69	1090

31	234	---	e110	943	---	230	---	301	---	65	59	---

TOTAL	10002	8449	7959	22268	16904	11497	32062	23786	38658	4697	3598	5381
MEAN	323	282	257	718	604	371	1069	767	1289	152	116	179
MAX	1810	1120	925	3660	1290	1120	4770	1590	6120	293	1190	1920
MIN	42	142	95	100	242	230	185	301	302	65	34	29
CFSM	.83	.73	.66	1.86	1.56	.96	2.76	1.98	3.33	.39	.30	.46
IN.	.96	.81	.77	2.14	1.62	1.11	3.08	2.29	3.72	.45	.35	.52

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1940 - 1999, BY WATER YEAR (WY)
MEAN	155	193	206	233	322	530	505	413	372	232	166	145
MAX	1318	1052	1234	946	1215	2392	1782	1316	1734	1863	1202	1181
(WY)	1955	1986	1983	1974	1997	1979	1993	1996	1993	1996	1987	1980
MIN	11.3	12.6	11.3	6.19	15.5	70.2	61.1	47.8	57.4	20.5	17.9	12.3
(WY)	1954	1954	1964	1940	1940	1956	1963	1949	1988	1940	1971	1953

SUMMARY STATISTICS	FOR 1998 CALENDAR YEAR		FOR 1999 WATER YEAR		WATER YEARS 1940 - 1999
ANNUAL TOTAL	147388		185261
ANNUAL MEAN	404		508		289
HIGHEST ANNUAL MEAN					752	1993
LOWEST ANNUAL MEAN					65.7	1977
HIGHEST DAILY MEAN	2750	Apr 16	6120	Jun 13	14600	Jul 18 1996
LOWEST DAILY MEAN	24 A	Sep 13	29	Sep 25, 26	3.0	Jan 20 1940
ANNUAL SEVEN-DAY MINIMUM	30	Sep 7	33	Sep 7	4.1	Jan 19 1940
INSTANTANEOUS PEAK FLOW			12200	Jun 13	25400	Jul 18 1996
INSTANTANEOUS PEAK STAGE			11.24	Jun 13	13.37	Jul 18 1996
INSTANTANEOUS LOW FLOW			28	Sep 24-26	2.1	Jan 20 1940
ANNUAL RUNOFF (CFSM)	1.04		1.31		.75
ANNUAL RUNOFF (INCHES)	14.17		17.81		10.15
10 PERCENT EXCEEDS	925		1180		674
50 PERCENT EXCEEDS	256		251		131
90 PERCENT EXCEEDS	43		43		19

A - Estimated