GUNNISON RIVER BASIN

CURECANTI WATER-QUALITY NETWORK

The National Park Service and the US Geological Survey have entered into a partnership to collect and quality assure water-quality data for streams entering or within the boundaries of the Curecanti National Recreation Area (CNRA). Data were collected by Park Service personnel and reviewed by USGS personnel. The study area is located in the central southwest part of the State. The purpose of the data collection effort is to assess the quality of the surface-water resource prior to significant expected population growth upstream of CNRA. The goal of this program is to provide data that will assist the National Park Service in "helping to protect and enhance the quality of Park water".

382943107015300 BEAVER CREEK AT HIGHWAY 50 NEAR GUNNISON, CO

WATER-QUALITY RECORDS

LOCATION.--Lat 38°29'43", long 107°01'53", in SE14NW14 sec.24, T.49 N., R.2 W., Gunnison County, Hydrologic Unit 14020002, approximately 350 ft northwest of U.S. Highway 50, 600 ft upstream of mouth of Beaver Creek, and 8.3 mi southwest of Gunnison.

PERIOD OF RECORD.--For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=382943107015300

WATER-QUALITY DATA, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

Date	Time	Instan- taneous dis- charge, cfs (00061)	Dis- solved oxygen, mg/L (00300)	pH, water, unfltrd field, std units (00400)	Specif. conduc- tance, wat unf uS/cm 25 degC (00095)	Temper- ature, water, deg C (00010)	Hard- ness, water, unfltrd mg/L as CaCO3 (00900)	Calcium water, fltrd, mg/L (00915)	Magnes- ium, water, fltrd, mg/L (00925)	Ammonia + org-N, water, unfltrd mg/L as N (00625)	Ammonia water, fltrd, mg/L as N (00608)	Nitrite + nitrate water fltrd, mg/L as N (00631)	Nitrite water, fltrd, mg/L as N (00613)
JAN
22...	0935	--	10.9	7.8	92	0.0	37	11.3	2.08	E.08	<0.015	E.013	<0.002
APR
29...	1145	14	9.2	8.1	88	7.8	38	11.7	2.11	0.26	<0.015	E.012	<0.002
JUN
03...	1320	56	8.2	7.6	48	10.5	21	6.38	1.13	0.24	<0.015	E.014	<0.002
JUL
01...	0952	19	7.3	7.6	123	12.7	58	18.3	2.94	0.18	<0.015	<0.022	<0.002
31...	0955	6.7	7.2	7.9	122	14.3	58	18.2	3.08	0.18	<0.015	<0.022	<0.002
AUG
19...	0815	11	7.8	7.8	106	11.8	41	12.5	2.44	0.25	<0.015	<0.022	<0.002
SEP
02...	1415	6.3	7.1	7.9	108	16.4	49	15.6	2.50	0.24	<0.015	<0.022	<0.002

WATER-QUALITY DATA, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

Date	Ortho- phos- phate, water, fltrd, mg/L as P (00671)	Phos- phorus, water, unfltrd mg/L (00665)	Cadmium water, fltrd, ug/L (01025)	Copper, water, fltrd, ug/L (01040)	Lead, water, fltrd, ug/L (01049)	Mangan- ese, water, fltrd, ug/L (01056)	Selen- ium, water, fltrd, ug/L (01145)	Silver, water, fltrd, ug/L (01075)	Zinc, water, fltrd, ug/L (01090)
JAN
22...	0.034	0.052	<0.04	E.2	<0.08	40.0	<0.5	<0.2	<1
APR
29...	0.054	0.094	<0.04	0.4	<0.08	17.3	<0.5	<0.2	<1
JUN
03...	0.036	0.092	<0.04	0.5	<0.08	16.6	<0.5	<0.2	<1
JUL
01...	0.063	0.097	<0.04	0.3	<0.08	33.1	<0.5	<0.2	<1
31...	0.084	0.137	<0.04	E.2	<0.08	30.1	<0.5	<0.2	<1
AUG
19...	0.117	0.163	<0.04	E.2	<0.08	26.7	<0.5	<0.2	<1
SEP
02...	0.106	0.146	<0.04	0.3	<0.08	28.0	<0.5	<0.2	<1
< -- Actual value is known to be less than the value shown. E -- Estimated laboratory analysis value.