GUNNISON RIVER BASIN

383604106312400 QUARTZ CREEK BELOW PITKIN, CO

WATER-QUALITY RECORDS

LOCATION.--Lat 38°36'04", long 106°31'24", in SW14SE14 sec.9, T.50 N., R.4 E., Gunnison County, Hydrologic Unit 14020003, 1 mi south of Pitkin on Wuanita Pass Road.

DRAINAGE AREA.--Not determined.

PERIOD OF RECORD.--November 2000 to August 2003 (discontinued). For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=383604106312400

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

Date	Time	Instan- taneous dis- charge, cfs (00061)	Turbid- ity, wat unf lab, Hach 2100AN NTU (99872)	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)
OCT
18...	0830	5.2	3.0	10.0	8.2	180	0.0	98	28.5	6.48	E.06	<0.015	0.033
DEC
05...	1000	8.2	--	10.3	8.2	180	0.0	--	--	--	<0.10	<0.015	0.052
FEB
13...	0840	5.6	--	10.0	8.2	181	0.9	--	--	--	<0.10	<0.015	0.052
APR
17...	0920	13	E1.1	9.8	8.0	169	0.9	84	24.4	5.52	0.17	<0.015	0.030
JUN
19...	0940	62	<1.0	8.0	7.8	113	6.5	61	18.5	3.54	E.09	<0.015	E.016
AUG
28...	0845	23	1.3	7.9	8.0	157	10.5	79	24.1	4.68	0.13	<0.015	0.025

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

Date	Nitrite water, fltrd, mg/L as N (00613)	Ortho- phos- phate, water, fltrd, mg/L as P (00671)	Phos- phorus, water, unfltrd mg/L (00665)	BOD, water, unfltrd 5 day, 20 degC mg/L (00310)	E coli, m-TEC MF, water, col/ 100 mL (31633)
OCT
18...	<0.002	<0.007	0.004	<2.0	<1
DEC
05...	<0.002	<0.007	0.004	<2.0	E1
FEB
13...	<0.002	<0.007	0.006	<2.0	E2
APR
17...	<0.002	<0.007	0.009	<2.0	<1
JUN
19...	<0.002	<0.007	0.006	<2.0	E3
AUG
28...	<0.002	<0.007	0.013	<2.0	65
< -- Actual value is known to be less than the value shown. E -- Estimated laboratory analysis value.

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

Date	Alum- inum, water, fltrd, ug/L (01106)	Cadmium water, fltrd, ug/L (01025)	Copper, water, fltrd, ug/L (01040)	Iron, water, fltrd, ug/L (01046)	Lead, water, fltrd, ug/L (01049)	Mangan- ese, water, fltrd, ug/L (01056)	Silver, water, fltrd, ug/L (01075)	Zinc, water, fltrd, ug/L (01090)
OCT
18...	<20	<0.2	E.6	32	<1	E2.2	<0.3	<24
APR
17...	<20	<0.2	E1.1	27	<1	3.0	<0.3	<24
JUN
19...	7	<0.2	E1.2	32	<1	4.0	<0.3	E3
AUG
28...	5	<0.2	E.7	49	<1	2.8	<0.3	E2
< -- Actual value is known to be less than the value shown. E -- Estimated laboratory analysis value.

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

Date	Time	Peri- phyton biomass ash weight, g/m2 (00572)	Peri- phyton biomass dry weight, g/m2 (00573)	Biomass chloro- phyll ratio, peri- phyton, number (70950)	Pheo- phytin a, peri- phyton, mg/m2 (62359)	Chloro- phyll a peri- phyton, chromo- fluoro, mg/m2 (70957)	Biomass peri- phyton, ashfree drymass g/m2 (49954)
AUG
28...	0850	1,200	1,268	1,550	8.0	11.6	<17.500
< -- Actual value is known to be less than the value shown.

SUSPENDED SEDIMENT DISCHARGE, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

Date	Time	Instan- taneous dis- charge, cfs (00061)	Temper- ature, water, deg C (00010)	Sus- pended sedi- ment concen- tration mg/L (80154)	Sus- pended sedi- ment load, tons/d (80155)
OCT
18...	0830	5.2	0.0	1	0.01
APR
17...	0920	13	0.9	2	0.08
JUN
19...	0940	62	6.5	3	0.49
AUG
28...	0845	23	10.5	4	0.26