05550500 DATA: Discharge Tables, 1998

ILLINOIS RIVER BASIN

05550500 POPLAR CREEK AT ELGIN, IL

LOCATION.--Lat 42°01'35", long 88°15'20", in SE1/4NW1/4 sec.19, T.41 N., R.9 E., Cook County, Hydrologic Unit 07120006, on right bank 35 ft upstream from bridge on U.S. Highway B.R. 20 (Villa Street) in Elgin, and at mile 2.3.

DRAINAGE AREA.--35.2 mi².

PERIOD OF RECORD.--August 1951 to current year.

REVISED RECORDS.--WSP 1338: 1952-53. WDR IL-75-1: Drainage area.

GAGE.--Water-stage recorder. Datum of gage is 716.00 ft above sea level.

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	1.0	6.5	19	6.0	34	26	125	24	4.8	15	1.9	5.2
2	1.1	5.0	14	6.9	78	24	111	21	3.7	11	1.8	3.3
3	.85	4.3	12	38	80	21	82	21	2.9	11	1.8	2.3
4	.81	3.5	14	87	66	21	62	19	2.3	25	7.4	2.1
5	.76	3.1	13	116	53	21	47	17	2.6	22	10	1.8

6	.51	5.4	11	150	43	20	37	21	2.7	16	7.4	1.8
7	.53	9.0	9.2	180	36	18	37	142	2.5	26	8.7	16
8	.84	8.1	8.0	163	32	39	144	360	2.0	22	15	22
9	1.9	6.1	6.7	126	29	88	187	263	8.1	15	13	14
10	4.3	4.9	8.7	94	27	86	137	162	11	11	9.9	9.1

11	1.7	4.2	15	e60	48	70	92	94	45	7.8	5.9	6.0
12	1.8	3.8	15	e44	96	57	66	59	58	6.1	3.5	4.4
13	19	3.3	12	e36	85	43	51	44	41	5.0	2.5	3.0
14	21	2.6	9.4	e31	63	36	48	34	32	5.0	2.3	4.4
15	17	2.9	8.1	28	49	31	43	26	26	7.5	2.0	18

16	13	5.5	7.7	24	41	29	92	22	21	5.3	2.0	17
17	10	7.0	7.7	22	49	38	87	17	17	3.5	1.9	11
18	7.6	6.2	7.7	19	58	159	66	12	14	2.9	1.9	6.9
19	6.1	5.2	7.7	18	55	212	51	9.9	30	12	1.8	4.8
20	5.4	4.8	7.3	16	48	157	47	9.2	27	8.8	1.7	3.9

21	4.1	5.3	6.7	15	40	104	107	8.0	21	6.0	1.7	3.3
22	3.5	7.6	6.4	15	36	72	120	6.8	17	4.7	1.7	3.0
23	3.2	7.6	6.2	e15	32	56	79	6.2	13	4.5	1.7	2.5
24	5.3	6.0	6.2	e14	32	45	55	18	9.1	3.3	7.2	2.2
25	8.1	5.0	8.9	e14	31	37	40	11	7.5	2.7	46	2.0

26	15	4.5	13	14	29	32	39	7.5	25	2.3	33	2.0
27	64	4.8	11	15	29	28	35	5.6	19	2.0	17	1.9
28	41	11	9.3	16	28	27	28	8.2	22	1.9	22	2.0
29	18	14	8.1	20	---	25	27	10	23	1.9	21	2.0
30	12	24	7.5	26	---	22	26	9.6	20	1.9	14	2.6

31	8.8	---	6.2	26	---	61	---	7.5	---	1.9	7.9	---

TOTAL	298.20	191.2	302.7	1454.9	1327	1705	2168	1475.5	530.2	271.0	275.6	180.5
MEAN	9.62	6.37	9.76	46.9	47.4	55.0	72.3	47.6	17.7	8.74	8.89	6.02
MAX	64	24	19	180	96	212	187	360	58	26	46	22
MIN	.51	2.6	6.2	6.0	27	18	26	5.6	2.0	1.9	1.7	1.8
CFSM	.27	.18	.28	1.33	1.35	1.56	2.05	1.35	.50	.25	.25	.17
IN.	.32	.20	.32	1.54	1.40	1.80	2.29	1.56	.56	.29	.29	.19

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1951 - 1998, BY WATER YEAR (WY)
MEAN	12.8	21.4	23.4	21.5	29.1	49.6	52.0	35.3	26.4	15.4	15.8	12.7
MAX	64.6	133	113	85.1	129	235	146	130	102	92.4	103	94.6
(WY)	1973	1986	1983	1993	1997	1979	1983	1974	1996	1993	1990	1972
MIN	.50	.25	.60	.91	.72	4.76	9.51	3.50	.97	1.27	.87	.25
(WY)	1957	1954	1957	1959	1978	1956	1986	1989	1963	1988	1956	1956

SUMMARY STATISTICS	FOR 1997 CALENDAR YEAR		FOR 1998 WATER YEAR		WATER YEARS 1951 - 1998
ANNUAL TOTAL	10955.03		10179.80
ANNUAL MEAN	30.0		27.9		26.3
HIGHEST ANNUAL MEAN					52.6	1993
LOWEST ANNUAL MEAN					4.69	1963
HIGHEST DAILY MEAN	861	Feb 22	360	May 8	861	Feb 22 1997
LOWEST DAILY MEAN	.51	Oct 6	.51	Oct 6	.10	Sep 16 1956
ANNUAL SEVEN-DAY MINIMUM	.77	Oct 2	.77	Oct 2	.10	Sep 9 1958
INSTANTANEOUS PEAK FLOW			400	May 8	1180	Feb 21 1997
INSTANTANEOUS PEAK STAGE			4.29	May 8	6.78	Feb 21 1997
INSTANTANEOUS LOW FLOW			.00	Oct 6	.00	A
ANNUAL RUNOFF (CFSM)	.85		.79		.75
ANNUAL RUNOFF (INCHES)	11.58		10.76		10.14
10 PERCENT EXCEEDS	60		68		64
50 PERCENT EXCEEDS	13		14		10
90 PERCENT EXCEEDS	1.8		2.1		1.2

A - July 10, 1957; Sept. 14, 1958; July 18, 1989; Oct. 6, 1997.

Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data

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	1.0	6.5	19	6.0	34	26	125	24	4.8	15	1.9	5.2
2	1.1	5.0	14	6.9	78	24	111	21	3.7	11	1.8	3.3
3	.85	4.3	12	38	80	21	82	21	2.9	11	1.8	2.3
4	.81	3.5	14	87	66	21	62	19	2.3	25	7.4	2.1
5	.76	3.1	13	116	53	21	47	17	2.6	22	10	1.8

6	.51	5.4	11	150	43	20	37	21	2.7	16	7.4	1.8
7	.53	9.0	9.2	180	36	18	37	142	2.5	26	8.7	16
8	.84	8.1	8.0	163	32	39	144	360	2.0	22	15	22
9	1.9	6.1	6.7	126	29	88	187	263	8.1	15	13	14
10	4.3	4.9	8.7	94	27	86	137	162	11	11	9.9	9.1

11	1.7	4.2	15	e60	48	70	92	94	45	7.8	5.9	6.0
12	1.8	3.8	15	e44	96	57	66	59	58	6.1	3.5	4.4
13	19	3.3	12	e36	85	43	51	44	41	5.0	2.5	3.0
14	21	2.6	9.4	e31	63	36	48	34	32	5.0	2.3	4.4
15	17	2.9	8.1	28	49	31	43	26	26	7.5	2.0	18

16	13	5.5	7.7	24	41	29	92	22	21	5.3	2.0	17
17	10	7.0	7.7	22	49	38	87	17	17	3.5	1.9	11
18	7.6	6.2	7.7	19	58	159	66	12	14	2.9	1.9	6.9
19	6.1	5.2	7.7	18	55	212	51	9.9	30	12	1.8	4.8
20	5.4	4.8	7.3	16	48	157	47	9.2	27	8.8	1.7	3.9

21	4.1	5.3	6.7	15	40	104	107	8.0	21	6.0	1.7	3.3
22	3.5	7.6	6.4	15	36	72	120	6.8	17	4.7	1.7	3.0
23	3.2	7.6	6.2	e15	32	56	79	6.2	13	4.5	1.7	2.5
24	5.3	6.0	6.2	e14	32	45	55	18	9.1	3.3	7.2	2.2
25	8.1	5.0	8.9	e14	31	37	40	11	7.5	2.7	46	2.0

26	15	4.5	13	14	29	32	39	7.5	25	2.3	33	2.0
27	64	4.8	11	15	29	28	35	5.6	19	2.0	17	1.9
28	41	11	9.3	16	28	27	28	8.2	22	1.9	22	2.0
29	18	14	8.1	20	---	25	27	10	23	1.9	21	2.0
30	12	24	7.5	26	---	22	26	9.6	20	1.9	14	2.6

31	8.8	---	6.2	26	---	61	---	7.5	---	1.9	7.9	---

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	1.0	6.5	19	6.0	34	26	125	24	4.8	15	1.9	5.2
2	1.1	5.0	14	6.9	78	24	111	21	3.7	11	1.8	3.3
3	.85	4.3	12	38	80	21	82	21	2.9	11	1.8	2.3
4	.81	3.5	14	87	66	21	62	19	2.3	25	7.4	2.1
5	.76	3.1	13	116	53	21	47	17	2.6	22	10	1.8

6	.51	5.4	11	150	43	20	37	21	2.7	16	7.4	1.8
7	.53	9.0	9.2	180	36	18	37	142	2.5	26	8.7	16
8	.84	8.1	8.0	163	32	39	144	360	2.0	22	15	22
9	1.9	6.1	6.7	126	29	88	187	263	8.1	15	13	14
10	4.3	4.9	8.7	94	27	86	137	162	11	11	9.9	9.1

11	1.7	4.2	15	e60	48	70	92	94	45	7.8	5.9	6.0
12	1.8	3.8	15	e44	96	57	66	59	58	6.1	3.5	4.4
13	19	3.3	12	e36	85	43	51	44	41	5.0	2.5	3.0
14	21	2.6	9.4	e31	63	36	48	34	32	5.0	2.3	4.4
15	17	2.9	8.1	28	49	31	43	26	26	7.5	2.0	18

16	13	5.5	7.7	24	41	29	92	22	21	5.3	2.0	17
17	10	7.0	7.7	22	49	38	87	17	17	3.5	1.9	11
18	7.6	6.2	7.7	19	58	159	66	12	14	2.9	1.9	6.9
19	6.1	5.2	7.7	18	55	212	51	9.9	30	12	1.8	4.8
20	5.4	4.8	7.3	16	48	157	47	9.2	27	8.8	1.7	3.9

21	4.1	5.3	6.7	15	40	104	107	8.0	21	6.0	1.7	3.3
22	3.5	7.6	6.4	15	36	72	120	6.8	17	4.7	1.7	3.0
23	3.2	7.6	6.2	e15	32	56	79	6.2	13	4.5	1.7	2.5
24	5.3	6.0	6.2	e14	32	45	55	18	9.1	3.3	7.2	2.2
25	8.1	5.0	8.9	e14	31	37	40	11	7.5	2.7	46	2.0

26	15	4.5	13	14	29	32	39	7.5	25	2.3	33	2.0
27	64	4.8	11	15	29	28	35	5.6	19	2.0	17	1.9
28	41	11	9.3	16	28	27	28	8.2	22	1.9	22	2.0
29	18	14	8.1	20	---	25	27	10	23	1.9	21	2.0
30	12	24	7.5	26	---	22	26	9.6	20	1.9	14	2.6

31	8.8	---	6.2	26	---	61	---	7.5	---	1.9	7.9	---

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	1.0	6.5	19	6.0	34	26	125	24	4.8	15	1.9	5.2
2	1.1	5.0	14	6.9	78	24	111	21	3.7	11	1.8	3.3
3	.85	4.3	12	38	80	21	82	21	2.9	11	1.8	2.3
4	.81	3.5	14	87	66	21	62	19	2.3	25	7.4	2.1
5	.76	3.1	13	116	53	21	47	17	2.6	22	10	1.8

6	.51	5.4	11	150	43	20	37	21	2.7	16	7.4	1.8
7	.53	9.0	9.2	180	36	18	37	142	2.5	26	8.7	16
8	.84	8.1	8.0	163	32	39	144	360	2.0	22	15	22
9	1.9	6.1	6.7	126	29	88	187	263	8.1	15	13	14
10	4.3	4.9	8.7	94	27	86	137	162	11	11	9.9	9.1

11	1.7	4.2	15	e60	48	70	92	94	45	7.8	5.9	6.0
12	1.8	3.8	15	e44	96	57	66	59	58	6.1	3.5	4.4
13	19	3.3	12	e36	85	43	51	44	41	5.0	2.5	3.0
14	21	2.6	9.4	e31	63	36	48	34	32	5.0	2.3	4.4
15	17	2.9	8.1	28	49	31	43	26	26	7.5	2.0	18

16	13	5.5	7.7	24	41	29	92	22	21	5.3	2.0	17
17	10	7.0	7.7	22	49	38	87	17	17	3.5	1.9	11
18	7.6	6.2	7.7	19	58	159	66	12	14	2.9	1.9	6.9
19	6.1	5.2	7.7	18	55	212	51	9.9	30	12	1.8	4.8
20	5.4	4.8	7.3	16	48	157	47	9.2	27	8.8	1.7	3.9

21	4.1	5.3	6.7	15	40	104	107	8.0	21	6.0	1.7	3.3
22	3.5	7.6	6.4	15	36	72	120	6.8	17	4.7	1.7	3.0
23	3.2	7.6	6.2	e15	32	56	79	6.2	13	4.5	1.7	2.5
24	5.3	6.0	6.2	e14	32	45	55	18	9.1	3.3	7.2	2.2
25	8.1	5.0	8.9	e14	31	37	40	11	7.5	2.7	46	2.0

26	15	4.5	13	14	29	32	39	7.5	25	2.3	33	2.0
27	64	4.8	11	15	29	28	35	5.6	19	2.0	17	1.9
28	41	11	9.3	16	28	27	28	8.2	22	1.9	22	2.0
29	18	14	8.1	20	---	25	27	10	23	1.9	21	2.0
30	12	24	7.5	26	---	22	26	9.6	20	1.9	14	2.6

31	8.8	---	6.2	26	---	61	---	7.5	---	1.9	7.9	---