PLATTE RIVER BASIN

BIG THOMPSON PROJECT-Continued

06741510 BIG THOMPSON RIVER AT LOVELAND, CO

WATER-QUALITY RECORDS

LOCATION.--Lat 40°22'43", long 105°03'38", in SE14SE14 sec.24, T.5 N., R.69 W., Larimer County, Hydrologic Unit 10190006, on right bank 690 ft downstream from county road bridge C-13, 1.7 mi south of sugar refinery in Loveland, and 1.9 mi downstream from Farmers Ditch diversion.

DRAINAGE AREA.--535 mi2.

PERIOD OF RECORD.--July 1979 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=06741510

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
10...	0855	20	4.3	--	8.0	449	12.0	200	55.6	15.2	1.35	0.5	16.0
NOV
20...	1340	4.3	1.5	10.1	7.9	1,330	7.5	660	164	61.0	3.57	1	66.8
DEC
11...	1410	3.3	2.4	11.1	8.3	1,450	4.0	700	172	65.4	3.17	1	78.7
JAN
15...	1350	3.0	1.2	9.2	8.3	1,450	3.5	720	175	68.6	3.28	1	79.4
FEB
12...	1350	2.5	1.8	12.7	8.4	1,510	4.0	740	181	70.2	3.28	1	79.9
MAR
27...	0855	4.9	3.8	10.2	7.8	1,510	8.0	730	180	67.6	3.43	1	83.5
APR
16...	1310	5.3	2.1	10.7	8.4	1,600	15.0	740	184	68.8	3.48	1	76.6
MAY
08...	1005	4.4	2.6	8.1	7.7	1,530	15.0	710	175	66.3	3.99	1	74.6
22...	0830	3.6	3.3	6.1	7.8	1,710	14.5	780	174	83.7	4.30	2	110
JUN
05...	0840	125	6.6	9.5	7.7	122	10.0	47	12.5	3.84	0.77	0.3	5.05
19...	0835	196	70	8.2	7.8	213	13.5	83	22.0	6.78	2.06	0.4	8.25
JUL
10...	0835	49	2.6	7.9	7.8	547	17.0	220	46.8	24.2	1.53	0.8	28.5
23...	1250	79	4.1	8.3	8.3	665	21.5	270	59.6	30.1	1.94	0.9	33.2
AUG
13...	1300	71	13	8.7	8.4	574	23.0	260	61.8	24.5	2.00	0.7	24.6
SEP
10...	1350	20	16	9.9	8.5	759	18.5	290	68.8	29.8	2.16	0.8	29.6

06741510 BIG THOMPSON RIVER AT 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
10...	E77	5.41	142	--	--	--	295	0.24	<0.015	0.091	<0.007	0.008	0.017
NOV
20...	178	23.1	575	1,000	1.50	12.8	1,100	0.20	E.010	0.338	<0.007	E.004	0.004
DEC
11...	E183	25.3	616	--	--	--	1,170	0.18	0.028	0.434	<0.007	0.006	0.010
JAN
15...	180	24.4	617	1,080	1.62	9.67	1,190	0.20	0.029	0.412	<0.007	0.006	0.013
FEB
12...	181	29.7	650	1,120	1.66	8.22	1,220	0.21	0.060	0.351	<0.007	E.003	0.014
MAR
27...	170	32.6	636	1,110	1.66	16.1	1,220	0.35	0.046	0.388	<0.007	0.007	0.014
APR
16...	172	30.3	638	1,110	1.65	17.4	1,220	0.31	0.045	0.278	<0.007	0.007	0.020
MAY
08...	185	33.3	653	1,120	1.69	14.7	1,240	0.30	0.063	0.353	<0.007	0.007	0.014
22...	220	40.0	675	1,220	1.88	13.5	1,380	0.46	0.160	0.753	E.005	0.010	0.025
JUN
05...	23	2.82	29.2	69	0.12	30.4	90	0.98	<0.015	0.197	0.007	0.017	0.040
19...	40	3.90	50.4	120	0.21	79.9	151	1.1	0.050	0.444	0.032	0.049	0.19
JUL
10...	55	6.07	204	345	0.52	50.6	382	1.0	0.021	0.191	E.006	0.012	0.029
23...	70	7.67	255	430	0.63	99.2	465	0.40	E.010	0.122	E.006	0.014	0.041
AUG
13...	81	8.12	194	364	0.54	75.6	394	0.39	<0.015	0.099	<0.007	0.009	0.042
SEP
10...	103	11.9	271	475	0.74	29.5	546	0.49	E.011	0.105	<0.007	0.010	0.052

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
10...	0.5	1.4	33	E.05	20.1	<0.02	1.97	<0.2
NOV
20...	0.6	1.8	27	E.05	52.5	<0.02	6.81	<0.2
DEC
11...	0.5	2.5	24	<0.08	48.4	<0.02	9.02	<0.2
JAN
15...	0.5	2.3	16	0.12	48.3	<0.02	6.67	<0.2
FEB
12...	0.4	3.2	15	<0.08	54.3	<0.02	6.11	<0.2
MAR
27...	0.8	3.3	38	<0.08	96.6	<0.02	3.18	<0.2
APR
16...	0.7	3.6	27	<0.08	72.1	<0.02	6.90	<0.2
MAY
08...	0.8	2.5	30	<0.08	116	<0.02	7.45	<0.2
22...	0.6	7.5	27	<0.08	159	<0.02	2.69	<0.2
JUN
05...	E.2	1.9	66	E.04	15.3	<0.02	0.48	<0.2
19...	0.4	2.3	58	E.06	14.7	<0.02	1.14	<0.2
JUL
10...	0.4	2.5	37	<0.08	31.2	<0.02	1.75	<0.2
23...	1.1	2.3	16	<0.08	37.2	<0.02	2.37	<0.2
AUG
13...	1.1	1.5	15	<0.08	18.8	<0.02	3.43	<0.2
SEP
10...	0.9	2.9	E5	<0.08	31.7	<0.02	1.22	<0.2
< -- Actual value is known to be less than the value shown. E -- Estimated laboratory analysis value.

06741510 BIG THOMPSON RIVER AT 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
10...	<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
27...	<0.4	<0.4	<0.4	<0.4	<0.4
APR
16...	<0.4	<0.4	<0.4	<0.4	<0.4
MAY
08...	<0.4	<0.4	<0.4	<0.4	<0.4
22...	<0.4	<0.4	<0.4	<0.4	<0.4
JUN
05...	<0.4	<0.4	<0.4	<0.4	<0.4
19...	<0.4	<0.4	<0.4	<0.4	<0.4
JUL
10...	<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.