GUNNISON RIVER BASIN

CURECANTI WATER-QUALITY NETWORK-Continued

383418107471401 RED ROCK CANYON NEAR NATIONAL PARK SERVICE BOUNDARY NEAR MONTROSE, CO

WATER-QUALITY RECORDS

LOCATION.--Lat 38°34'18", long 107°47'14", in SE14NE14 sec.29, T.50 N., R.8 W., Gunnison County, Hydrologic Unit 14020002, in the Black Canyon of the Gunnison National Park, 0.6 mi north of the south boundary, 0.75 mi east of the west boundary, and 8.0 mi northeast of Montrose.

PERIOD OF RECORD.--For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=383418107471401

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)
JUL
16...	1115	6.3	8.4	7.9	841	13.6	410	99.8	40.0	0.41	0.020	0.781	0.004
AUG
07...	1117	3.4	8.0	8.2	902	14.8	440	107	41.6	0.41	0.019	0.722	0.004
27...	1206	6.3	8.7	7.7	--	14.4	440	112	38.1	0.44	0.020	0.642	E.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)
JUL
16...	0.114	0.175	<0.04	1.4	<0.08	29.2	17.5	<0.2	1
AUG
07...	0.122	0.172	E.02	1.7	<0.08	15.0	23.2	<0.2	1
27...	0.067	0.108	E.02	1.6	<0.08	23.9	17.2	<0.2	M
< -- Actual value is known to be less than the value shown. E -- Estimated laboratory analysis value. M -- Presence of material verified but not quantified.