PLATTE RIVER BASIN

BIG THOMPSON PROJECT-Continued

402533105124300 BIG THOMPSON RIVER BELOW SULZER GULCH NEAR LOVELAND, CO

WATER-QUALITY RECORDS

LOCATION.--Lat 40°25'33", long 105°12'43", in NE14SE14 sec.3, T.5 N., R.70 W., Larimer County, Hydrologic Unit 10190006, approximately 230 ft downstream of bridge upstream of dam and Loveland Water Treatment Plant intake, approximately 1.2 mi from Hwy 34, and approximately 8.3 mi west of Loveland.

DRAINAGE AREA.--309 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=402533105124300

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
09...	1240	61	3.6	--	8.1	57	12.0	21	6.26	1.25	0.86	0.3	3.49
NOV
20...	1225	28	1.0	12.5	9.0	64	2.5	21	6.30	1.34	0.78	0.4	3.84
DEC
11...	1210	28	<1.0	13.2	8.7	80	1.0	27	8.07	1.63	0.97	0.4	4.66
JAN
15...	1220	28	<1.0	12.4	8.2	73	0.5	26	7.81	1.59	1.00	0.4	4.29
FEB
12...	1250	30	<1.0	13.4	8.6	83	1.0	28	8.30	1.71	1.03	0.4	5.14
MAR
26...	1305	72	4.5	10.1	8.2	150	8.5	45	13.0	3.08	1.48	0.6	9.22
APR
16...	1135	167	3.2	9.8	8.2	105	9.0	34	9.88	2.34	1.18	0.4	5.94
MAY
07...	1240	129	5.2	9.7	8.3	93	10.0	29	8.29	2.09	0.89	0.4	5.32
21...	1250	424	4.2	9.3	8.0	69	11.5	23	6.61	1.68	0.85	0.4	4.16
JUN
04...	1305	1,080	6.6	9.3	7.2	29	10.0	11	3.15	0.727	0.59	0.2	1.68
18...	1230	534	3.6	9.2	7.3	27	11.5	10	2.94	0.690	0.42	0.2	1.54
JUL
09...	1240	419	2.0	8.4	7.4	24	16.5	8	2.49	0.546	0.37	0.2	1.48
23...	1125	250	2.9	7.8	7.3	24	18.0	9	2.56	0.519	0.38	0.2	1.44
AUG
13...	1150	156	2.9	7.8	7.7	35	20.0	14	4.00	0.853	0.43	0.2	1.66
SEP
10...	1225	245	2.8	8.6	8.1	53	16.0	21	6.17	1.31	0.58	0.2	2.09

402533105124300 BIG THOMPSON RIVER BELOW SULZER GULCH NEAR LOVELAND, 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
09...	E24	2.24	3.2	--	--	--	28	0.29	E.008	0.023	0.021	0.032	0.047
NOV
20...	24	3.04	3.5	34	0.05	2.94	40	0.18	<0.015	0.196	0.007	0.014	0.019
DEC
11...	E28	3.40	4.0	--	--	--	51	0.24	<0.015	0.470	0.014	0.025	0.038
JAN
15...	28	2.38	3.7	40	0.06	3.45	46	0.26	0.064	0.472	0.039	0.043	0.060
FEB
12...	31	3.69	<0.2	--	--	--	49	0.27	0.032	0.473	0.026	0.033	0.043
MAR
26...	28	13.2	11.6	76	0.13	18.9	97	0.51	0.018	1.68	0.022	0.034	0.059
APR
16...	29	8.03	7.4	53	0.09	29.0	64	0.41	<0.015	0.205	E.005	0.015	0.043
MAY
07...	22	9.07	7.2	47	0.09	23.1	66	0.41	E.011	0.139	E.006	0.014	0.044
21...	18	5.42	5.4	36	0.08	63.9	56	0.41	0.017	0.167	E.005	0.013	0.038
JUN
04...	10	1.46	2.3	17	0.04	88.6	30	0.27	<0.015	0.173	<0.007	0.011	0.034
18...	10	1.18	2.0	15	0.04	38.1	26	0.22	E.008	0.193	<0.007	0.008	0.020
JUL
09...	9	1.03	1.7	14	0.03	26.8	24	0.21	E.010	0.135	0.010	0.015	0.025
23...	9	1.02	1.8	14	0.03	12.7	19	0.26	E.012	0.154	0.020	0.027	0.034
AUG
13...	14	0.97	2.3	19	0.04	12.5	30	0.24	0.017	0.054	0.009	0.016	0.029
SEP
10...	22	1.32	3.3	28	0.05	25.8	39	0.29	0.016	0.072	E.005	0.011	0.032

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
09...	0.3	1.2	58	E.06	4.1	<0.02	0.37	<0.20
NOV
20...	E.1	0.8	46	E.05	4.7	<0.02	0.40	<0.20
DEC
11...	E.2	0.9	49	0.09	4.9	<0.02	0.59	<0.20
JAN
15...	E.2	0.9	27	0.19	4.2	<0.02	0.50	<0.20
FEB
12...	<0.3	0.9	30	<0.08	3.4	<0.02	0.43	<0.20
MAR
26...	0.3	1.6	60	E.05	5.8	<0.02	0.53	<0.20
APR
16...	E.2	3.7	56	E.05	5.0	<0.02	0.62	<0.20
MAY
07...	E.2	1.6	99	E.06	8.1	<0.02	0.59	<0.20
21...	E.2	3.6	82	E.06	5.3	<0.02	0.50	<0.20
JUN
04...	E.1	110	70	E.05	6.7	<0.02	0.55	<0.20
18...	<0.3	1.1	66	E.06	7.0	<0.02	0.33	<0.20
JUL
09...	<0.3	5.9	54	E.07	3.5	<0.02	0.21	<0.20
23...	<0.3	62.9	52	<0.08	4.0	<0.02	0.19	<0.20
AUG
13...	E.2	9.8	51	0.11	3.8	<0.02	0.30	<0.20
SEP
10...	E.2	1.9	40	0.09	2.3	<0.02	0.16	<0.20
< -- Actual value is known to be less than the value shown. E -- Estimated laboratory analysis value.

402533105124300 BIG THOMPSON RIVER BELOW SULZER GULCH NEAR LOVELAND, 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
09...	<0.4	<0.4	<0.4	<0.4	<0.4
NOV
20...	<0.4	<0.4	<0.4	<0.4	<0.4
DEC
11...	<0.4	<0.4	<0.4	<0.4	<0.4
JAN
15...	<0.4	<0.4	<0.4	<0.4	<0.4
FEB
12...	<0.4	<0.4	<0.4	<0.4	<0.4
MAR
26...	<0.4	<0.4	<0.4	<0.4	<0.4
APR
16...	<0.4	<0.4	<0.4	<0.4	<0.4
MAY
07...	<0.4	<0.4	<0.4	<0.4	<0.4
21...	<0.4	<0.4	<0.4	<0.4	<0.4
JUN
04...	<0.4	<0.4	<0.4	<0.4	<0.4
18...	<0.4	<0.4	<0.4	<0.4	<0.4
JUL
09...	<0.4	<0.4	<0.4	<0.4	<0.4
23...	<0.4	<0.4	<0.4	<0.4	<0.4
AUG
15...	<0.4	<0.4	<0.4	<0.4	<0.4
SEP
10...	<0.4	<0.4	<0.4	<0.4	<0.4
< -- Actual value is known to be less than the value shown.