05542000 DATA: Discharge Tables, 2001

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 1994-1995; 1999-2001.

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, water-quality monitor, 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 fair except for estimated daily discharges, which are poor.

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	.55	5.4	248	e89	e1500	864	203	109	645	52	.28	23
2	.44	7.0	248	e94	e1250	687	183	106	862	42	.96	12
3	.58	8.5	243	e98	1120	561	172	96	550	42	1.2	6.4
4	18	8.6	234	e100	690	485	157	88	384	611	.74	5.1
5	67	10	e208	e102	528	418	154	85	1470	410	.57	3.8

6	43	12	e190	e103	465	349	189	86	8470	211	.28	4.4
7	47	107	e175	e99	e1000	326	252	89	5800	123	.08	5.6
8	43	123	e165	e92	e1750	300	263	85	2490	102	.01	11
9	33	242	e153	e86	e9250	272	226	79	1590	96	.01	7.8
10	26	1160	e128	e82	9280	246	233	81	1110	104	.02	13

11	24	803	e124	e82	2860	244	407	94	820	81	.00	19
12	11	512	e145	e85	1740	238	439	95	638	50	.00	7.1
13	11	426	e139	e90	1440	293	346	80	519	35	.00	4.9
14	10	455	e125	e95	1530	290	228	79	423	26	.00	3.5
15	9.3	367	e110	e104	2130	293	203	89	357	19	.00	3.0

16	5.7	302	e98	e120	1610	561	195	98	309	13	.00	2.5
17	6.3	252	e90	e149	1130	1130	164	104	260	8.5	.00	2.4
18	8.2	202	e82	e169	863	1310	138	102	233	18	9.0	2.8
19	8.9	180	e78	e181	706	984	131	100	216	19	28	135
20	7.8	169	e74	e180	597	742	144	108	189	9.5	13	161

21	6.9	141	e72	e162	462	594	150	103	179	5.9	5.3	140
22	6.0	e143	e68	e152	435	485	169	114	189	4.2	4.6	85
23	5.3	e127	e66	e146	379	410	205	111	164	3.1	60	67
24	5.9	e119	e64	e140	741	356	201	96	134	2.4	60	90
25	6.6	110	e63	e135	6810	299	168	87	113	1.9	63	71

26	7.6	128	e63	e135	3550	266	150	101	98	1.6	64	56
27	8.0	149	e65	e135	1740	258	141	272	86	1.3	52	48
28	7.7	155	e69	e140	1200	234	121	353	71	.92	26	37
29	13	156	e73	e155	---	233	107	254	63	.73	13	29
30	8.3	204	e78	e400	---	219	105	198	59	.56	8.4	24

31	5.5	---	e84	e1760	---	209	---	186	---	.35	12	---

TOTAL	461.57	6783.5	3822	5660	56756	14156	5944	3728	28491	2094.96	422.45	1080.3
MEAN	14.9	226	123	183	2027	457	198	120	950	67.6	13.6	36.0
MAX	67	1160	248	1760	9280	1310	439	353	8470	611	64	161
MIN	.44	5.4	63	82	379	209	105	79	59	.35	.00	2.4
CFSM	.03	.50	.27	.40	4.45	1.00	.44	.26	2.09	.15	.03	.08
IN.	.04	.55	.31	.46	4.64	1.16	.49	.30	2.33	.17	.03	.09

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1940 - 2001, BY WATER YEAR (WY)
MEAN	138	232	300	304	447	651	684	517	473	219	91.2	161
MAX	1148	2264	2398	1399	2027	3378	2316	2765	1776	1551	1406	2494
(WY)	1942	1986	1983	1950	2001	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 2000 CALENDAR YEAR		FOR 2001 WATER YEAR		WATER YEARS 1940 - 2001
ANNUAL TOTAL	58882.84		129399.78
ANNUAL MEAN	161		355		350
HIGHEST ANNUAL MEAN					819	1993
LOWEST ANNUAL MEAN					20.6	1940
HIGHEST DAILY MEAN	3080	Jul 11	9280	Feb 10	19400	Dec 4 1982
LOWEST DAILY MEAN	.00	Sep 5-10	.00	A	.00	B
ANNUAL SEVEN-DAY MINIMUM	.00	Sep 4	.00	Aug 11	.00	B
MAXIMUM PEAK FLOW			12600	Feb 10	22400 C	Dec 4 1982
MAXIMUM PEAK STAGE			14.10	Feb 10	19.70	Jul 15 1958
ANNUAL RUNOFF (CFSM)	.35		.78		.77
ANNUAL RUNOFF (INCHES)	4.81		10.58		10.46
10 PERCENT EXCEEDS	376		720		865
50 PERCENT EXCEEDS	37		107		92
90 PERCENT EXCEEDS	2.0		4.3		1.6

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