PLATTE RIVER BASIN

BIG THOMPSON PROJECT-Continued

402249105282000 BIG THOMPSON RIVER AT WHISPERING PINES NEAR ESTES PARK, CO

WATER-QUALITY RECORDS

LOCATION.--Lat 40°22'49", long 105°28'00", in SW14SW14 sec.21, T.5 N., R.72 W., Larimer County, Hydrologic Unit 10190006, on right bank, immediately downstream of staff gage connected to the Hwy 34 bridge supports, at Whispering Pines.

DRAINAGE AREA.--164 mi2.

PERIOD OF RECORD.--August 2000 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=402249105282000

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)	Potas- sium, water, fltrd, mg/L (00935)	Sodium adsorp- tion ratio (00931)	Sodium, water, fltrd, mg/L (00930)
OCT
08...	0930	35	8.5	--	7.8	62	8.5	20	5.94	1.28	0.84	0.4	4.01
NOV
19...	1020	22	1.6	10.8	8.0	59	2.0	20	6.10	1.21	0.84	0.3	3.26
DEC
10...	1020	23	1.4	10.7	8.4	65	1.0	23	6.83	1.38	0.86	0.3	3.47
JAN
14...	1010	21	E1.0	11.0	8.2	75	1.0	27	8.09	1.58	0.97	0.4	4.17
FEB
11...	1045	30	1.1	11.1	8.3	86	0.5	27	8.20	1.65	1.26	0.4	5.04
MAR
25...	1120	32	5.5	11.2	9.4	105	5.5	31	9.17	1.93	1.46	0.6	7.04
APR
15...	1035	50	4.2	9.9	9.4	123	9.0	39	10.8	2.87	1.29	0.5	7.64
MAY
06...	1100	100	2.9	9.2	8.5	97	9.5	30	8.38	2.20	0.98	0.5	5.80
20...	1040	130	3.6	9.0	8.2	58	8.0	19	5.32	1.41	0.77	0.3	3.49
JUN
03...	1105	571	4.4	10.1	7.4	27	8.0	11	3.10	0.717	0.48	0.2	1.54
17...	1105	123	1.8	8.6	7.8	25	11.5	9	2.48	0.614	0.43	0.2	1.55
JUL
08...	1045	143	1.7	7.7	7.7	26	15.0	8	2.39	0.562	0.45	0.3	1.93
22...	1055	129	3.0	7.3	7.4	26	17.0	7	2.14	0.515	0.48	0.3	1.72
AUG
12...	1045	122	2.6	6.9	7.9	40	19.5	14	4.22	0.947	0.68	0.3	2.31
SEP
09...	1025	72	1.9	7.9	8.1	58	15.0	21	6.18	1.36	0.70	0.2	2.60

402249105282000 BIG THOMPSON RIVER AT WHISPERING PINES NEAR ESTES PARK, CO-Continued

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

Date	Alka- linity, wat flt fxd end lab, mg/L as CaCO3 (29801)	Chlor- ide, water, fltrd, mg/L (00940)	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)	Residue on evap. at 180degC wat flt mg/L (70300)	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)	Ortho- phos- phate, water, fltrd, mg/L as P (00671)	Phos- phorus, water, fltrd, mg/L (00666)	Phos- phorus, water, unfltrd mg/L (00665)
OCT
08...	E22	2.68	3.6	--	--	--	36	0.29	E.009	0.443	0.100	0.114	0.131
NOV
19...	22	1.78	3.6	32	0.06	2.46	42	0.24	<0.015	0.436	--	--	--
DEC
10...	E24	1.73	3.5	--	--	--	43	0.26	E.008	0.498	0.075	0.086	0.105
JAN
14...	30	1.75	3.9	40	0.06	2.61	47	0.46	0.153	0.409	0.056	0.064	0.082
FEB
11...	32	2.25	4.8	46	0.08	4.56	56	0.57	0.278	0.580	0.094	0.109	0.129
MAR
25...	28	9.16	5.8	55	0.09	5.52	64	0.60	0.117	0.766	0.107	0.123	0.173
APR
15...	27	12.7	7.9	62	0.11	10.8	80	0.54	E.010	0.455	0.038	0.055	0.105
MAY
06...	20	10.4	6.8	49	0.10	20.1	75	0.39	0.015	0.383	0.021	0.030	0.064
20...	14	5.16	4.4	30	0.07	17.2	49	0.37	0.016	0.236	0.008	0.018	0.040
JUN
03...	10	1.19	2.0	16	0.04	46.8	30	0.21	<0.015	0.181	<0.007	0.011	0.027
17...	8	1.46	1.9	15	0.04	10.5	32	0.17	E.010	0.261	0.019	0.029	0.037
JUL
08...	9	1.53	1.8	15	0.03	9.20	24	0.25	0.016	0.242	0.041	0.054	0.062
22...	8	1.45	1.8	15	0.03	7.60	22	0.24	0.061	0.319	0.055	0.069	0.073
AUG
12...	14	1.35	2.7	22	0.04	10.8	33	0.34	0.021	0.245	0.058	0.071	0.086
SEP
09...	22	1.92	3.6	32	0.06	8.34	43	0.32	0.022	0.367	0.055	0.067	0.089

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

Date	Arsenic water, fltrd, ug/L (01000)	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)	Mercury water, fltrd, ug/L (71890)	Nickel, water, fltrd, ug/L (01065)	Silver, water, fltrd, ug/L (01075)
OCT
08...	0.3	0.8	102	E.06	4.8	<0.02	0.39	<0.20
NOV
19...	E.2	0.7	20	<0.08	5.7	<0.02	0.39	<0.20
DEC
10...	E.2	0.8	20	<0.08	6.8	<0.02	0.49	<0.20
JAN
14...	E.2	0.8	13	0.27	19.9	<0.02	0.45	<0.20
FEB
11...	E.2	1.1	20	<0.08	18.8	<0.02	0.50	<0.20
MAR
25...	0.3	1.1	70	<0.08	14.2	<0.02	0.35	<0.20
APR
15...	E.2	1.1	137	E.06	6.3	<0.02	0.59	<0.20
MAY
06...	E.2	1.4	130	0.08	7.8	<0.02	0.57	<0.20
20...	E.2	1.6	118	E.06	8.0	<0.02	0.33	<0.20
JUN
03...	<0.3	1.3	82	0.08	8.4	<0.02	0.35	<0.20
17...	<0.3	1.4	73	<0.08	6.8	<0.02	0.30	<0.20
JUL
08...	<0.3	0.8	71	<0.08	5.7	<0.02	0.22	<0.20
22...	<0.3	0.8	69	E.04	4.3	<0.02	0.18	<0.20
AUG
12...	E.2	0.7	65	<0.08	3.2	<0.02	0.35	<0.20
SEP
09...	E.2	0.7	72	E.06	2.9	<0.02	0.18	<0.20
< -- Actual value is known to be less than the value shown. E -- Estimated laboratory analysis value.

402249105282000 BIG THOMPSON RIVER AT WHISPERING PINES NEAR ESTES PARK, CO-Continued

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

Date	Benzene water unfltrd ug/L (34030)	Ethyl- benzene water unfltrd ug/L (34371)	meta- + para- Xylene, water, unfltrd ug/L (85795)	o- Xylene, water, unfltrd ug/L (77135)	Toluene water unfltrd ug/L (34010)
OCT
08...	<0.4	<0.4	<0.4	<0.4	<0.4
NOV
19...	<0.4	<0.4	<0.4	<0.4	<0.4
DEC
10...	<0.4	<0.4	<0.4	<0.4	<0.4
JAN
14...	<0.4	<0.4	<0.4	<0.4	<0.4
FEB
11...	<0.4	<0.4	<0.4	<0.4	<0.4
MAR
25...	<0.4	<0.4	<0.4	<0.4	<0.4
APR
15...	<0.4	<0.4	<0.4	<0.4	<0.4
MAY
06...	<0.4	<0.4	<0.4	<0.4	<0.4
20...	<0.4	<0.4	<0.4	<0.4	<0.4
JUN
03...	<0.4	<0.4	<0.4	<0.4	<0.4
17...	<0.4	<0.4	<0.4	<0.4	<0.4
JUL
08...	<0.4	<0.4	<0.4	<0.4	<0.4
22...	<0.4	<0.4	<0.4	<0.4	<0.4
AUG
15...	<0.4	<0.4	<0.4	<0.4	<0.4
SEP
09...	<0.4	<0.4	<0.4	<0.4	<0.4
< -- Actual value is known to be less than the value shown.