PLATTE RIVER BASIN

06752270 CACHE LA POUDRE RIVER BELOW FORT COLLINS, CO

WATER-QUALITY RECORDS

LOCATION.--Lat 40°34'01", long 105°01'36", in NW14NE14 sec.20, T.7 N., R.68 W., Larimer County, Hydrologic Unit 10190007, 1.4 mi west of
Interstate 25 on Prospect Street in Fort Collins.

DRAINAGE AREA.--1,240 mi2.

PERIOD OF RECORD.--January 1978 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=06752270

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)	Sodium adsorp- tion ratio (00931)	Sodium, water, fltrd, mg/L (00930)	ANC, wat unf fixed end pt, lab, mg/L as CaCO3 (90410)	Chlor- ide, water, fltrd, mg/L (00940)
OCT
17...	1235	9.0	11.5	8.7	803	10.0	350	95.1	26.8	--	--	E200	--
NOV
15...	1410	3.1	14.4	8.6	1,230	8.0	590	159	47.7	--	--	233	--
DEC
17...	1200	3.5	13.4	8.2	1,120	3.5	550	149	42.3	--	--	E191	--
JAN
29...	1035	3.3	11.4	8.5	1,110	4.0	550	150	41.5	0.8	45.5	261	23.1
FEB
27...	1100	3.2	12.2	8.5	1,210	3.5	570	152	46.4	--	--	E225	--
APR
03...	1405	6.7	13.4	8.1	1,180	13.0	550	148	44.0	--	--	220	--
29...	1120	6.4	12.8	8.4	1,190	15.5	560	151	44.0	--	--	228	--
MAY
20...	1035	41	9.5	8.5	484	10.5	200	56.1	15.4	--	--	103	--
JUL
02...	1310	336	8.5	8.2	130	18.0	51	14.5	3.50	--	--	36	--
15...	1545	42	8.7	8.6	355	22.5	150	39.8	11.2	0.5	14.2	87	8.71
AUG
05...	1045	83	9.0	8.5	205	20.5	88	25.1	6.15	--	--	56	--
SEP
17...	1100	44	12.3	8.8	399	16.6	36	10.5	2.25	--	--	105	--

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

Date	Fluor- ide, water, fltrd, mg/L (00950)	Silica, water, fltrd, mg/L (00955)	Sulfate water, fltrd, mg/L (00945)	Residue on evap. at 180degC wat flt mg/L (70300)	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)	Phos- phorus, water, fltrd, mg/L (00666)	Alum- inum, water, fltrd, ug/L (01106)	Arsenic water, fltrd, ug/L (01000)	Cadmium water, fltrd, ug/L (01025)	Chrom- ium, water, fltrd, ug/L (01030)
OCT
17...	--	--	--	--	<0.04	2.99	0.026	0.68	0.67	--	--	--	--
NOV
15...	--	--	--	--	<0.04	1.06	0.014	0.02	0.04	--	--	--	--
DEC
17...	--	--	--	--	E.03	1.28	0.012	E.01	<0.04	--	--	--	--
JAN
29...	0.77	9.3	322	824	<0.04	1.35	0.013	<0.02	<0.04	<2	<2	<0.2	<0.8
FEB
27...	--	--	--	--	<0.04	1.11	E.005	<0.02	<0.04	--	--	--	--
APR
03...	--	--	--	--	<0.04	1.12	0.015	<0.02	<0.04	--	--	--	--
29...	--	--	--	--	<0.04	0.984	0.020	<0.02	<0.04	--	--	--	--
MAY
20...	--	--	--	--	<0.04	0.514	E.006	E.01	E.02	--	--	--	--
JUL
02...	--	--	--	--	<0.04	0.165	<0.008	E.01	E.02	--	--	--	--
15...	0.3	8.29	74.2	223	<0.04	0.539	E.005	0.06	0.07	11	<2	<0.04	<0.8
AUG
05...	--	--	--	--	E.010	0.299	E.005	0.038	0.04	--	--	--	--
SEP
17...	--	--	--	--	<0.015	0.704	E.006	0.215	0.23	--	--	--	--

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

Date	Copper, water, fltrd, ug/L (01040)	Iron, water, fltrd, ug/L (01046)	Iron, water, unfltrd recover -able, ug/L (01045)	Lead, water, fltrd, ug/L (01049)	Mangan- ese, water, unfltrd recover -able, ug/L (01055)	Mercury water, fltrd, ug/L (71890)	Nickel, water, fltrd, ug/L (01065)	Selen- ium, water, fltrd, ug/L (01145)	Silver, water, fltrd, ug/L (01075)	Zinc, water, fltrd, ug/L (01090)
OCT
17...	3.3	35	120	--	--	--	--	--	<0.3	--
NOV
15...	1.5	24	130	--	--	--	--	--	<0.3	--
DEC
17...	2.0	14	140	--	--	--	--	--	<0.5	--
JAN
29...	1.8	15	160	<1	50	<0.02	8.3	4.4	<0.3	2
FEB
27...	2.5	15	140	--	--	--	--	--	<0.3	--
APR
03...	1.9	14	360	--	--	--	--	--	<0.3	--
29...	3.3	17	270	--	--	--	--	--	<0.3	--
MAY
20...	2.1	50	390	--	--	--	--	--	<0.3	--
JUL
02...	0.8	52	250	--	--	--	--	--	<0.3	--
15...	1.2	31	160	E.05	21	<0.02	1.53	1.0	<0.20	2
AUG
05...	1.2	26	280	--	--	--	--	--	<0.20	--
SEP
17...	0.4	--	160	--	--	--	--	--	<0.20	--
< -- Actual value is known to be less than the value shown. E -- Estimated laboratory analysis value.