PLATTE RIVER BASIN

06693800 MOSQUITO CREEK NEAR ALMA, CO

LOCATION.--Lat 39°16'12", long 106°03'02", in SE14NE14 sec.13, T.9 S., R.78 W., Park County, Hydrologic Unit 10190001, on left bank 0.1 mi upstream from confluence with Middle Fork South Platte River, and 1.2 mi south of Alma.

DRAINAGE AREA.--16.2 mi2.

PERIOD OF RECORD.--October 1998 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=06693800

GAGE.--Water-stage recorder with satellite telemetry. Elevation of gage is 10,220 ft above NGVD of 1929, from topographic map.

REMARKS.--Records good except for estimated daily discharges, which are poor. Natural flow of stream affected by minor diversions for irrigation, and return flow from irrigated areas. 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.

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	7.0	e6.7	e4.4	e3.3	e3.3	e3.4	e4.9	7.8	114	46	18	16
2	7.8	e6.4	e4.3	e3.3	e3.3	e3.5	e5.1	6.3	87	46	16	15
3	8.4	e6.4	e4.2	e3.3	e3.3	e3.6	e5.2	6.3	78	45	17	15
4	7.2	e6.3	e4.1	e3.3	e3.3	e3.6	e5.2	6.5	71	45	20	14
5	7.5	e6.3	e3.9	e3.3	e3.3	e3.6	e5.2	5.9	65	43	16	13
6	7.2	e6.2	e3.9	e3.3	e3.3	e3.6	e5.2	5.9	53	40	16	17
7	7.3	e6.1	e3.7	e3.3	e3.3	e3.6	e5.2	6.1	49	36	15	23
8	7.1	e6.0	e3.6	e3.3	e3.3	e3.7	e5.7	6.3	44	35	15	21
9	6.7	e5.9	e3.6	e3.3	e3.3	e3.7	e6.0	6.9	51	34	14	26
10	6.5	e5.7	e3.5	e3.2	e3.3	e3.7	e6.3	7.4	64	32	14	26
11	6.6	e5.7	e3.4	e3.2	e3.3	e3.8	e6.7	6.8	68	30	14	24
12	6.3	e5.7	e3.4	e3.2	e3.3	e3.8	e7.2	8.0	67	29	13	22
13	6.4	e5.6	e3.4	e3.2	e3.3	e3.9	e7.8	9.7	63	28	14	21
14	6.1	e5.6	e3.4	e3.2	e3.2	e3.9	e9.3	11	56	27	16	20
15	6.5	e5.4	e3.2	e3.2	e3.2	e4.0	e10	15	62	26	13	18
16	6.4	e5.2	e3.2	e3.2	e3.3	e4.0	11	16	60	27	13	17
17	6.4	e5.1	e3.2	e3.2	e3.3	e4.0	9.7	21	53	28	15	16
18	6.4	e5.0	e3.3	e3.2	e3.3	e4.0	13	25	57	27	16	15
19	6.5	e4.9	e3.3	e3.2	e3.3	e4.0	12	23	64	27	16	14
20	6.3	e4.9	e3.3	e3.2	e3.3	e3.9	11	25	59	27	13	14
21	6.5	e4.8	e3.2	e3.2	e3.3	e3.8	10	29	54	26	12	13
22	6.3	e4.8	e3.2	e3.2	e3.3	e3.8	11	38	54	25	12	12
23	6.6	e4.8	e3.2	e3.2	e3.3	e3.8	16	52	55	24	12	11
24	6.4	e4.8	e3.2	e3.3	e3.3	e3.8	11	61	53	23	15	11
25	6.3	e4.6	e3.2	e3.3	e3.3	e3.9	12	68	49	21	20	10
26	7.1	e4.6	e3.2	e3.3	e3.3	e3.9	9.5	71	45	21	19	9.9
27	6.4	e4.5	e3.2	e3.3	e3.4	e3.9	10	89	45	23	16	9.6
28	7.2	e4.5	e3.2	e3.4	e3.4	e4.0	8.3	108	47	25	15	9.4
29	6.5	e4.5	e3.2	e3.3	---	e4.2	8.8	118	47	22	14	9.3
30	7.6	e4.5	e3.2	e3.3	---	e4.5	8.7	118	47	20	17	9.0
31	7.2	---	e3.2	e3.3	---	e4.8	---	111	---	19	19	---
TOTAL	210.7	161.5	107.5	101.0	92.4	119.7	257.0	1,088.9	1,781	927	475	471.2
MEAN	6.80	5.38	3.47	3.26	3.30	3.86	8.57	35.1	59.4	29.9	15.3	15.7
MAX	8.4	6.7	4.4	3.4	3.4	4.8	16	118	114	46	20	26
MIN	6.1	4.5	3.2	3.2	3.2	3.4	4.9	5.9	44	19	12	9.0
AC-FT	418	320	213	200	183	237	510	2,160	3,530	1,840	942	935
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1999 - 2003, BY WATER YEAR (WY)
MEAN	8.86	6.85	4.44	3.75	3.69	3.99	6.52	35.5	63.7	35.9	18.3	12.1
MAX	10.0	7.63	5.75	5.03	4.45	4.44	8.57	49.7	116	67.1	33.3	15.8
(WY)	(2000)	(2000)	(2000)	(2000)	(2000)	(1999)	(2003)	(2001)	(1999)	(1999)	(1999)	(1999)
MIN	6.80	5.38	3.47	3.09	2.98	3.41	5.33	15.3	17.0	6.89	5.31	5.30
(WY)	(2003)	(2003)	(2003)	(2002)	(2002)	(2002)	(1999)	(2002)	(2002)	(2002)	(2002)	(2002)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1999 - 2003
ANNUAL TOTAL	2,449.5	5,792.9
ANNUAL MEAN	6.71	15.9	17.0
HIGHEST ANNUAL MEAN			25.3 1999
LOWEST ANNUAL MEAN			6.99 2002
HIGHEST DAILY MEAN	29 May 31	118 May 29	161 Jun 24, 1999
LOWEST DAILY MEAN	e2.9 Feb 8	e3.2 Dec 15	e2.9 Feb 8, 2002
ANNUAL SEVEN-DAY MINIMUM	e2.9 Feb 8	e3.2 Dec 21	e2.9 Feb 8, 2002
MAXIMUM PEAK FLOW		155 May 30	217 Jun 23, 1999
MAXIMUM PEAK STAGE		5.97 May 30	6.34 Jun 23, 1999
ANNUAL RUNOFF (AC-FT)	4,860	11,490	12,320
10 PERCENT EXCEEDS	14	46	49
50 PERCENT EXCEEDS	5.0	6.5	7.2
90 PERCENT EXCEEDS	3.1	3.3	3.5

e Estimated.