PLATTE RIVER BASIN

06717400 CHICAGO CREEK BELOW DEVILS CANYON, NEAR IDAHO SPRINGS, CO

LOCATION.--Lat 39°42'59", long 105°34'15", in NW14SW14 sec.9, T.4 S., R.73 W., Clear Creek County, Hydrologic Unit 10190004, on left bank, 50 ft upstream from Highway 103 bridge, 5.6 mi upstream from intersection of I-70 and Colorado Highway 103, and 3.2 mi southwest of Idaho Springs.

DRAINAGE AREA.--43.7 mi2.

PERIOD OF RECORD.--October 1994 to September 1999. October 1999 to current year (seasonal records only). Records for May 14, 1996 (when gage was located 700 ft upstream) to April 10, 1998, may not be equivalent to other records because gage was moved upstream of inflow from Devils Canyon. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=06717400

GAGE.--Water-stage recorder with satellite telemetry. Elevation of gage is 8,040 ft above NGVD of 1929, from topographic map. Prior to May 14, 1996, at site 150 ft downstream at different datum. May 14, 1996 to Apr. 10, 1998, at site 700 ft upstream at different datum.

REMARKS.--Records fair except for estimated daily discharges, which are poor. Several measurements of specific conductance and water temperature were obtained and are published in the "Supplemental Water-Quality Data For Gaging Stations" section of this report.

EXTREMES FOR PERIOD OF RECORD.--Maximum daily discharge 275 ft3/s (estimated), June 19, 1995, peak not determined; maximum instantaneous discharge, 183 ft3/s, May 31, 2003, gage height 5.79 ft; minimum daily, 0.30 ft3/s (estimated), Nov. 13, 14, 2000.

EXTREMES FOR CURRENT YEAR (seasonal only).--Maximum discharge, 183 ft3/s, May 31, gage height, 5.79 ft; minimum daily, 2.9 ft3/s, Mar. 13 (estimated).

Discharge, cubic feet per second 

WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

DAILY MEAN VALUES

DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP
1	7.1	e3.8	---	---	---	---	5.7	23	143	33	11	11
2	8.6	e3.7	---	---	---	---	8.2	21	113	31	10	10
3	8.7	e3.9	---	---	---	---	8.3	21	103	30	11	14
4	7.6	e4.1	---	---	---	---	7.0	21	89	29	12	15
5	7.4	e4.2	---	---	---	---	6.1	19	86	28	10	11
6	7.3	e4.3	---	---	---	---	5.5	18	76	28	9.7	12
7	7.2	e4.7	---	---	---	---	5.3	18	75	27	9.7	28
8	7.4	e4.6	---	---	---	---	5.1	18	64	26	10	24
9	6.4	e4.5	---	---	---	---	6.7	17	62	24	9.5	28
10	6.4	e4.5	---	---	---	---	11	17	65	24	10	22
11	6.1	e4.4	---	---	---	---	13	15	63	23	8.8	21
12	6.2	e4.4	---	---	---	---	15	17	62	22	8.4	20
13	5.7	e4.4	---	---	---	e2.9	19	22	61	21	8.0	20
14	5.7	e4.4	---	---	---	3.1	23	27	60	21	7.3	19
15	5.5	e4.4	---	---	---	3.3	22	34	57	21	7.0	17
16	5.3	e4.2	---	---	---	3.0	19	35	55	18	7.4	15
17	4.3	e4.3	---	---	---	3.0	18	40	55	12	9.3	14
18	4.2	e4.1	---	---	---	---	18	28	57	14	9.6	13
19	4.1	e4.2	---	---	---	---	16	22	56	17	8.3	13
20	4.2	e4.2	---	---	---	---	13	21	54	20	6.9	12
21	4.0	e4.3	---	---	---	---	12	29	53	16	6.6	11
22	4.5	e4.1	---	---	---	---	13	38	51	13	6.7	11
23	4.4	e4.1	---	---	---	---	13	53	50	13	7.3	11
24	4.6	e4.1	---	---	---	---	12	71	48	13	7.9	10
25	4.2	e4.1	---	---	---	---	14	74	39	12	8.7	9.6
26	4.0	e4.1	---	---	---	---	19	78	29	12	7.9	9.2
27	4.7	e4.2	---	---	---	---	23	83	27	14	6.8	9.7
28	4.1	e4.2	---	---	---	---	25	74	27	15	6.7	9.7
29	3.8	e4.1	---	---	---	---	28	101	35	15	6.4	9.6
30	e3.8	e4.2	---	---	---	---	27	127	35	13	23	9.5
31	e3.8	---	---	---	---	3.7	---	136	---	12	16	---
TOTAL	171.3	126.8	---	---	---	---	430.9	1,318	1,850	617	287.9	439.3
MEAN	5.53	4.23	---	---	---	---	14.4	42.5	61.7	19.9	9.29	14.6
MAX	8.7	4.7	---	---	---	---	28	136	143	33	23	28
MIN	3.8	3.7	---	---	---	---	5.1	15	27	12	6.4	9.2
AC-FT	340	252	---	---	---	---	855	2,610	3,670	1,220	571	871

e Estimated.