ROARING FORK RIVER BASIN

09073300 ROARING FORK RIVER ABOVE DIFFICULT CREEK NEAR ASPEN, CO-Continued

WATER-QUALITY RECORDS

PERIOD OF RECORD.--October 1996 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09073300

PERIOD OF DAILY RECORD.--

SPECIFIC CONDUCTANCE: December 1999 to June 2000.

WATER TEMPERATURE: December 1999 to June 2000.

INSTRUMENTATION.--Water-quality monitor, December 1999 to June 2000.

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)	Potas- sium, water, fltrd, mg/L (00935)	Sodium adsorp- tion ratio (00931)	Sodium, water, fltrd, mg/L (00930)	Alka- linity, wat flt fxd end lab, mg/L as CaCO3 (29801)
OCT
08...	1150	16	9.3	8.0	79	5.3	33	10.5	1.76	0.41	0.1	1.95	E29
FEB
05...	1115	12	10.6	7.5	86	0.0	--	--	--	--	--	--	--
APR
23...	1150	25	11.6	7.6	69	1.0	29	9.07	1.51	0.46	0.2	1.99	26
MAY
28...	1505	190	9.5	--	33	8.3	15	4.48	0.820	0.34	0.1	1.09	14
JUL
22...	1430	25	7.7	7.9	58	16.4	--	--	--	--	--	--	--
SEP
03...	1420	20	8.1	8.0	79	12.5	36	11.4	1.81	0.52	0.1	1.80	25

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

Date	Chlor- ide, water, fltrd, mg/L (00940)	Fluor- ide, water, fltrd, mg/L (00950)	Silica, water, fltrd, mg/L (00955)	Sulfate water, fltrd, mg/L (00945)	Residue water, fltrd, sum of consti- tuents mg/L (70301)	Residue water, fltrd, tons/ acre-ft (70303)	Residue water, fltrd, tons/d (70302)	Ammonia + org-N, water, fltrd, mg/L as N (00623)	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)	Ortho- phos- phate, water, fltrd, mg/L as P (00671)
OCT
08...	1.12	0.4	5.4	9.7	--	--	--	E.08	E.07	<0.015	0.025	E.002	<0.007
FEB
05...	--	--	--	--	--	--	--	E.07	E.10	<0.015	0.102	<0.002	<0.007
APR
23...	0.62	0.38	6.6	7.1	44	0.06	2.93	0.11	E.09	<0.015	0.091	<0.002	<0.007
MAY
28...	0.23	0.2	5.8	2.1	24	0.03	12.2	0.13	0.24	<0.015	0.026	E.002	<0.007
JUL
22...	--	--	--	--	--	--	--	E.06	0.12	<0.015	E.021	<0.002	<0.007
SEP
03...	0.25	0.5	6.0	12.1	50	0.07	2.69	<0.10	E.08	<0.015	0.048	<0.002	<0.007

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

Date	Phos- phorus, water, fltrd, mg/L (00666)	Phos- phorus, water, unfltrd mg/L (00665)	E coli, m-TEC MF, water, col/ 100 mL (31633)	Fecal coli- form, M-FC 0.7u MF col/ 100 mL (31625)
OCT
08...	<0.004	E.003	E1	E1
FEB
05...	<0.004	<0.004	<1	<1
APR
23...	0.004	E.003	E3	<1
MAY
28...	<0.004	0.014	<1	E2
JUL
22...	E.002	E.003	E1	<1
SEP
03...	<0.004	<0.004	<1	<1
< -- 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	Cadmium water, fltrd, ug/L (01025)	Copper, water, fltrd, ug/L (01040)	Iron, water, unfltrd recover -able, ug/L (01045)	Lead, water, fltrd, ug/L (01049)	Mangan- ese, water, fltrd, ug/L (01056)	Mangan- ese, water, unfltrd recover -able, ug/L (01055)	Mercury water, fltrd, ug/L (71890)	Selen- ium, water, fltrd, ug/L (01145)	Silver, water, fltrd, ug/L (01075)	Zinc, water, fltrd, ug/L (01090)
OCT
08...	<0.2	E1.1	30	<1	E2.2	E2.6	<0.02	<3	<0.3	<24
APR
23...	<0.2	1.4	80	<1	3.8	E3.7	<0.02	<3	<0.3	<24
MAY
28...	<0.2	1.7	250	<1	2.5	11.4	<0.02	<3	<0.3	<3
SEP
03...	<0.2	E1.0	30	<1	1.3	2.4	<0.02	<3	<0.3	<3
< -- Actual value is known to be less than the value shown. E -- Estimated laboratory analysis value.

MISCELLANEOUS FIELD MEASUREMENTS, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

Date	Time	Instan- taneous dis- charge, cfs (00061)	Specif. conduc- tance, wat unf uS/cm 25 degC (00095)	Temper- ature, water, deg C (00010)		Date	Time	Instan- taneous dis- charge, cfs (00061)	Specif. conduc- tance, wat unf uS/cm 25 degC (00095)	Temper- ature, water, deg C (00010)
OCT						JUN
02...	1135	20	80	6.2		03...	0900	178	31	3.9
NOV						JUL
13...	1130	13	80	1.0		01...	1145	68	44	10.9