PLATTE RIVER BASIN

06752280 CACHE LA POUDRE RIVER ABOVE BOXELDER CREEK NEAR TIMNATH, CO

LOCATION.--Lat 40 33'07", long 105 00'39", in NE14NW14 sec.28, T.7 N., R.68 W., Larimer County, Hydrologic Unit 10190007, on left bank 4,000 ft upstream from Boxelder Creek, 2.0 mi upstream from Interstate Highway 25 bridge, and 3.8 mi southeast of intersection of College Avenue and Prospect Street in Fort Collins.

DRAINAGE AREA.--1,245 mi2.

WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--October 1979 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=06752280

GAGE.--Water-stage recorder with satellite telemetry. Elevation of gage is 4,860 ft above NGVD of 1929, from topographic map. Prior to March 24, 1994, at site 1,900 ft downstream at different datum.

REMARKS.--Records fair, except for estimated daily discharges, which are poor. Natural flow of stream affected by transmountain and transbasin diversions, storage reservoirs, power developments, diversion for municipal supply, diversions upstream from station for irrigation, and return flow from irrigated areas.

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	1.2	2.0	1.8	1.8	2.3	2.3	5.4	4.8	870	313	17	65
2	1.8	1.6	2.1	1.8	2.7	2.0	5.0	4.6	729	273	23	11
3	2.1	1.4	2.2	1.8	2.7	2.2	4.6	4.3	573	257	21	2.4
4	2.7	1.3	2.3	1.9	2.3	2.3	4.5	3.8	462	199	31	e1.6
5	1.5	1.1	2.2	1.8	2.3	2.2	4.5	3.5	338	123	30	e2.1
6	1.3	1.2	2.3	1.9	2.1	2.1	4.6	2.4	241	24	e1.9	e1.2
7	1.3	1.6	2.1	1.8	1.9	2.3	4.6	2.3	301	9.2	e0.61	e1.3
8	1.5	1.7	2.3	2.1	1.9	2.3	4.1	2.2	291	2.6	e0.59	e4.4
9	1.3	1.6	2.3	2.3	2.1	2.3	3.9	2.4	228	0.70	10	11
10	1.3	1.9	2.3	2.3	2.0	2.4	3.9	35	233	3.0	16	7.7
11	1.5	1.6	2.3	2.3	1.8	2.8	4.1	22	426	23	e4.3	2.1
12	1.7	1.7	2.3	2.6	1.9	3.0	4.0	9.9	354	30	e0.74	32
13	1.8	1.8	2.2	2.6	1.8	2.9	3.7	8.2	49	36	e0.74	17
14	1.9	1.8	2.3	2.6	1.9	2.9	3.9	25	42	41	e0.74	38
15	2.0	1.8	2.3	2.9	1.9	2.9	3.9	3.5	108	18	e3.3	41
16	2.2	1.8	2.3	2.6	2.3	3.2	3.9	3.5	115	14	9.9	25
17	2.1	1.7	2.3	2.8	2.1	3.7	11	10	211	50	12	14
18	2.3	1.7	2.2	2.7	2.2	8.1	50	9.6	238	80	28	18
19	2.2	2.0	2.1	2.7	2.3	7.5	20	37	338	68	16	8.8
20	2.4	2.0	2.3	2.6	2.2	4.9	18	27	293	104	e2.1	4.4
21	2.4	2.1	2.3	2.6	2.2	9.3	15	44	256	27	e0.92	e1.5
22	2.1	1.8	2.3	2.6	2.3	11	10	69	169	47	e11	e1.4
23	2.2	2.0	2.1	2.5	2.2	10	29	107	180	42	20	e1.3
24	2.3	2.0	1.9	2.6	2.2	11	29	201	259	31	14	e1.2
25	2.4	2.0	1.9	2.6	2.1	8.1	8.5	177	296	25	e8.4	e1.1
26	2.3	1.7	1.7	2.5	2.2	8.7	6.4	366	236	47	e1.1	e1.0
27	2.1	1.6	1.8	2.6	2.2	9.3	5.6	306	192	98	e0.92	e1.0
28	1.8	1.8	1.8	2.5	2.1	6.8	5.4	423	231	38	e0.93	e1.0
29	2.4	1.7	1.7	2.6	---	6.1	5.1	431	342	16	23	e1.0
30	2.1	1.8	1.8	2.7	---	5.6	4.8	736	332	7.4	136	e1.0
31	2.5	---	1.8	2.4	---	5.5	---	788	---	18	136	---
TOTAL	60.7	51.8	65.6	74.1	60.2	155.7	286.4	3,869.0	8,933	2,064.90	581.19	319.5
MEAN	1.96	1.73	2.12	2.39	2.15	5.02	9.55	125	298	66.6	18.7	10.7
MAX	2.7	2.1	2.3	2.9	2.7	11	50	788	870	313	136	65
MIN	1.2	1.1	1.7	1.8	1.8	2.0	3.7	2.2	42	0.70	0.59	1.0
AC-FT	120	103	130	147	119	309	568	7,670	17,720	4,100	1,150	634
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1980 - 2003, BY WATER YEAR (WY)
MEAN	21.0	30.9	25.9	26.7	26.0	28.6	102	416	830	191	48.3	28.9
MAX	162	179	114	139	156	159	633	2,729	4,430	1,288	278	182
(WY)	(1998)	(1998)	(1998)	(1984)	(1984)	(1980)	(1980)	(1980)	(1983)	(1983)	(1997)	(1997)
MIN	1.96	1.73	2.02	2.39	2.15	2.59	1.93	8.66	85.8	5.94	4.27	1.99
(WY)	(2003)	(2003)	(2002)	(2003)	(2003)	(2002)	(2002)	(1982)	(1989)	(1987)	(1987)	(2002)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1980 - 2003
ANNUAL TOTAL	5,680.92	16,522.09
ANNUAL MEAN	15.6	45.3
HIGHEST ANNUAL MEAN			700 1983
LOWEST ANNUAL MEAN			15.8 2002
HIGHEST DAILY MEAN	326 Jun 4	870 Jun 1	5,750 May 1, 1999
LOWEST DAILY MEAN	0.03 Aug 12	e0.59 Aug 8	0.03 Aug 12, 2002
ANNUAL SEVEN-DAY MINIMUM	0.34 Aug 15	e1.0 Sep 24	0.34 Aug 15, 2002
MAXIMUM PEAK FLOW		1,190 May 30	a7,200 May 1, 1999
MAXIMUM PEAK STAGE		7.38 May 30	b11.13 May 1, 1999
ANNUAL RUNOFF (AC-FT)	11,270	32,770
10 PERCENT EXCEEDS	20	178	267
50 PERCENT EXCEEDS	2.3	2.6	10
90 PERCENT EXCEEDS	1.3	1.6	3.5

e Estimated. a From slope-area measurement of peak flow. b From highwater marks.