GUNNISON RIVER BASIN

CURECANTI WATER-QUALITY NETWORK-Continued

382418107242600 BLUE CREEK AT HIGHWAY 50 NEAR SAPINERO, CO

WATER-QUALITY RECORDS

LOCATION.--Lat 38°24'18", long 107°24'26", in NW14NW14 sec.23, T.48 N., R.5 W., Gunnison County, Hydrologic Unit 14020002, 200 ft downstream of confluence with East Fork of Little Blue Creek, 750 ft northwest of Halfway House, and 6.8 mi southwest of Sapinero.

PERIOD OF RECORD.--For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=382418107242600

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)
FEB
19...	1210	11	10.7	8.0	80	0.0	26	7.84	1.59	0.12	<0.015	0.087	<0.002
MAY
05...	1055	60	10.6	8.1	63	3.7	25	7.41	1.56	0.38	<0.015	0.070	E.002
JUN
19...	1200	32	7.8	--	--	12.7	27	8.04	1.74	0.30	<0.015	<0.022	<0.002
JUL
14...	1255	11	6.6	8.2	88	18.7	32	9.70	2.00	0.32	E.013	E.014	<0.002
AUG
04...	1100	11	7.8	7.9	88	13.1	38	11.4	2.23	0.23	<0.015	E.011	<0.002
20...	1035	8.4	7.6	8.2	90	12.3	35	10.5	2.15	0.27	<0.015	<0.022	<0.002
SEP
02...	1050	9.5	7.8	8.2	84	11.5	40	12.5	2.13	0.28	<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)
FEB
19...	0.038	0.059	<0.04	E.2	<0.08	17.3	<0.5	<0.2	<1
MAY
05...	0.023	0.070	<0.04	0.6	<0.08	15.3	<0.5	<0.2	5
JUN
19...	0.038	0.079	<0.04	0.6	<0.08	17.2	<0.5	<0.2	<1
JUL
14...	0.062	0.105	<0.04	0.5	<0.08	20.5	<0.5	<0.2	<1
AUG
04...	0.060	0.105	<0.04	0.4	<0.08	26.0	<0.5	<0.2	M
20...	0.048	0.094	<0.04	0.4	<0.08	28.1	<0.5	<0.2	2
SEP
02...	0.045	0.092	<0.04	0.4	<0.08	29.7	<0.5	<0.2	<1
< -- Actual value is known to be less than the value shown. E -- Estimated laboratory analysis value. M -- Presence of material verified but not quantified.