05542000 DATA: Discharge Tables, 2000

Station list Available data
ILLINOIS RIVER BASIN

05542000 MAZON RIVER NEAR COAL CITY, IL

LOCATION.-- Lat 41°17'10", long 88°21'35", in SW1/4SW1/4 sec.31, T.33 N., R.8 E., Grundy County, Hydrologic Unit 07120005, on right bank at downstream side of bridge on State Highway 113, 0.3 mi downstream from Johnny Run, 3 mi west of Coal City, and at mile 15.0.

DRAINAGE AREA.-- 455 mi².

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: October 1939 to September 1995. October 1998 to current year.

STAGE: Water years 1994-1996;1999-2000.

PARTIAL RECORD: Annual maximum, water years 1997-98.

SURFACE-WATER QUALITY

CHEMICAL: Water years 1978-91.

REVISED RECORDS.-- WSP 1035: 1943(P). WSP 1115: 1946. WDR IL-75-1: Drainage area.

GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter and rain gage, and crest-stage gage. Datum of gage is 527.41 ft. above sea level. Prior to Apr. 30, 1940, and October 1996 to September 1998, nonrecording gage at same site and datum.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 22,400 ft³/s, Dec. 4, 1982, gage height, 19.51 ft; maximum gage height, 19.70 ft, July 15, 1958; no flow at times in many years.

EXTREMES OUTSIDE PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Flood of Aug. 8, 1924 reached a stage of about 21 ft, discharge not determined.

REMARKS FOR CURRENT YEAR.-- Records good except those for Apr. 5 to Sept. 30, which are fair; and those for Mar. 9 to Apr. 4 and estimated daily discharges, which are poor.

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	1.1	.54	1.7	3.6	e3.1	23	13	110	1430	291	53	.34
2	1.3	.62	1.6	4.0	e3.2	18	12	153	1150	253	59	.16
3	2.5	.81	1.9	4.4	e3.3	12	12	178	650	246	45	.09
4	3.8	1.0	2.7	4.9	e3.4	8.9	e10	159	472	235	30	.03
5	6.4	1.0	16	4.5	e3.5	7.5	8.8	144	415	427	25	.00

6	4.2	.77	32	4.5	e3.6	6.3	8.7	127	352	472	52	.00
7	2.6	.67	17	4.1	e3.7	5.6	12	118	291	291	195	.00
8	1.8	.65	10	3.8	e3.7	5.5	20	117	267	212	110	.00
9	1.5	.59	7.2	4.5	e3.9	4.1	30	133	245	174	71	.00
10	1.0	.59	5.7	6.3	e4.1	2.2	46	206	218	1260	54	.00

11	.76	.58	4.7	7.3	e4.5	3.0	44	295	207	3080	38	.07
12	.52	.63	4.0	7.1	e5.0	2.9	40	264	233	1220	28	1.1
13	.42	.81	3.6	6.6	e5.7	3.4	35	292	673	665	21	6.0
14	.31	.95	3.6	5.3	e6.3	3.3	30	274	1320	431	15	4.8
15	.27	.85	4.4	5.0	e6.6	5.0	25	212	1690	308	9.0	3.0

16	.35	.76	4.7	4.9	e7.0	11	27	185	1070	234	6.1	2.4
17	.37	1.0	4.3	4.6	e7.4	14	71	178	649	181	4.9	2.6
18	.49	1.2	4.3	4.6	e7.9	14	75	175	464	144	4.5	1.0
19	.56	2.0	4.1	e4.5	e8.4	13	72	432	372	127	2.8	.78
20	.55	1.8	4.1	e4.3	e9.2	21	106	429	332	114	2.2	.64

21	.49	1.4	2.9	e4.0	e11	52	391	294	2120	95	1.9	.61
22	.54	1.5	2.7	e3.6	19	73	353	240	2410	79	1.7	.62
23	.51	1.8	2.5	e3.3	61	61	274	214	969	62	1.6	1.1
24	.51	2.0	e2.4	e3.0	118	41	230	190	894	51	1.3	2.0
25	.42	2.1	e2.3	e2.7	111	32	259	161	2290	43	.95	2.0

26	.37	2.6	e2.4	e2.6	82	26	213	138	1480	36	.68	2.3
27	.42	2.5	e2.6	e2.6	59	26	169	161	846	30	.66	1.9
28	.89	2.3	e2.8	e2.7	42	23	146	290	567	25	.57	1.4
29	.74	2.1	3.1	e2.8	30	21	127	384	441	28	.57	1.1
30	.67	1.8	3.4	e2.9	---	19	110	301	348	52	.45	.78

31	.58	---	3.5	e3.0	---	17	---	295	---	50	.37	---

TOTAL	36.94	37.92	168.2	132.0	636.5	574.7	2969.5	6849	24865	10916	836.25	36.82
MEAN	1.19	1.26	5.43	4.26	21.9	18.5	99.0	221	829	352	27.0	1.23
MAX	6.4	2.6	32	7.3	118	73	391	432	2410	3080	195	6.0
MIN	.27	.54	1.6	2.6	3.1	2.2	8.7	110	207	25	.37	.00
CFSM	.00	.00	.01	.01	.05	.04	.22	.49	1.82	.77	.06	.00
IN.	.00	.00	.01	.01	.05	.05	.24	.56	2.03	.89	.07	.00

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1940 - 2000, BY WATER YEAR (WY)
MEAN	140	232	303	307	420	654	693	524	465	221	92.5	163
MAX	1148	2264	2398	1399	1489	3378	2316	2765	1776	1551	1406	2494
(WY)	1942	1986	1983	1950	1984	1979	1950	1943	1980	1958	1972	1989
MIN	.000	.15	.10	.10	.56	2.14	26.7	46.7	13.9	.40	.58	.000
(WY)	1940	1957	1940	1940	1940	1940	1940	1956	1988	1988	1947	1946

SUMMARY STATISTICS	FOR 1999 CALENDAR YEAR		FOR 2000 WATER YEAR		WATER YEARS 1940 - 2000
ANNUAL TOTAL	119043.20		48058.83
ANNUAL MEAN	326		131		350
HIGHEST ANNUAL MEAN					819	1993
LOWEST ANNUAL MEAN					20.6	1940
HIGHEST DAILY MEAN	9220	Jun 14	3080	Jul 11	19400	Dec 4 1982
LOWEST DAILY MEAN	.27	Oct 15	.00	Sep 5-10	.00	A
ANNUAL SEVEN-DAY MINIMUM	.39	Oct 12	.00	Sep 4	.00	A
INSTANTANEOUS PEAK FLOW			3830	Jul 11	22400 B	Dec 4 1982
INSTANTANEOUS PEAK STAGE			7.59	Jul 11	19.70	Jul 15 1958
ANNUAL RUNOFF (CFSM)	.72		.29		.77
ANNUAL RUNOFF (INCHES)	9.73		3.93		10.46
10 PERCENT EXCEEDS	914		315		867
50 PERCENT EXCEEDS	10		6.3		92
90 PERCENT EXCEEDS	.58		.60		1.6

A - At times in many years.
B - Gage height, 19.51 ft.