PLATTE RIVER BASIN

BIG THOMPSON PROJECT-Continued

06741520 BIG THOMPSON RIVER BELOW LOVELAND, CO

WATER-QUALITY RECORDS

LOCATION.--Lat 40°23'00", long 105°01'45", in NW14SE14 sec.20, T.5 N., R.68 W., Larimer County, Hydrologic Unit 10190006, at county road 9E bridge, about 0.3 mi upstream from outlet ditch and 2.0 mi southeast of Loveland.

DRAINAGE AREA.--543 mi2.

PERIOD OF RECORD.--June 1979 to December 1992, and March 2001 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=06741520

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...	1005	40	540	--	7.3	548	12.5	220	56.4	19.1	3.04	0.9	30.2
NOV
21...	0920	11	1.5	8.2	7.6	1,090	8.5	400	95.5	39.6	7.43	2	76.0
DEC
12...	0840	8.7	2.7	6.9	7.6	1,110	5.5	400	92.8	40.8	7.70	2	82.5
JAN
16...	0850	7.1	2.9	5.7	7.6	1,090	4.5	390	90.3	38.7	9.36	2	84.0
FEB
13...	0910	8.8	2.2	5.9	7.2	1,170	6.5	400	93.7	39.2	8.29	2	86.0
MAR
27...	1035	16	10	9.6	8.2	1,460	9.0	600	138	61.4	6.23	2	108
APR
17...	0835	11	3.0	6.9	7.9	1,450	10.5	550	119	62.1	8.19	2	118
MAY
08...	1150	16	3.0	11.0	8.5	1,380	15.0	530	122	54.8	7.38	2	93.9
22...	0945	17	2.9	6.9	7.9	1,400	16.0	500	105	57.6	8.29	2	122
JUN
05...	1015	140	5.6	9.1	8.0	251	11.5	83	20.0	8.10	1.63	0.7	15.4
19...	0930	204	74	7.7	8.1	390	14.0	130	31.2	12.9	3.03	0.9	24.1
JUL
10...	0945	72	2.4	7.9	8.1	637	18.5	230	50.6	26.3	2.83	1	40.0
24...	0840	79	11	7.4	7.9	732	19.5	290	63.6	32.2	2.79	1	42.9
AUG
14...	0915	80	13	7.2	8.0	627	20.5	260	61.8	25.7	2.72	0.9	32.0
SEP
11...	0845	43	13	7.3	7.9	853	15.5	320	72.3	33.2	3.29	1	45.3

06741520 BIG THOMPSON RIVER BELOW 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...	E81	11.2	163	--	--	--	363	1.8	0.072	3.48	0.360	0.39	1.09
NOV
21...	105	36.0	352	732	1.08	23.4	794	0.98	0.053	12.7	1.88	1.99	1.89
DEC
12...	E107	36.8	356	--	--	--	797	1.3	0.093	11.4	2.13	2.14	2.49
JAN
16...	133	38.5	333	726	1.04	14.6	764	7.1	5.66	8.50	2.34	2.53	2.74
FEB
13...	140	45.0	345	748	1.04	18.1	763	8.5	6.51	7.00	2.34	2.51	2.82
MAR
27...	173	43.8	550	1,030	1.49	46.7	1,090	4.2	2.63	3.31	0.95	1.10	1.25
APR
17...	155	43.3	525	1,010	1.48	33.6	1,090	2.8	1.35	6.85	1.50	1.67	1.78
MAY
08...	142	44.6	502	947	1.44	45.6	1,060	2.2	0.818	7.34	1.22	1.48	1.61
22...	152	45.5	482	960	1.42	47.7	1,050	2.8	1.30	9.29	1.69	1.95	1.94
JUN
05...	34	7.20	63.5	143	0.22	61.5	163	0.51	0.024	1.22	0.220	0.24	0.28
19...	52	7.82	114	230	0.35	143	259	1.2	0.072	1.11	0.143	0.163	0.32
JUL
10...	67	11.3	222	404	0.61	87.3	449	0.50	0.045	2.27	0.365	0.42	0.42
24...	82	11.7	268	478	0.71	112	522	0.54	0.030	1.69	0.246	0.27	0.29
AUG
14...	85	11.3	203	396	0.59	94.3	437	0.81	0.015	1.88	0.271	0.27	0.34
SEP
11...	109	17.9	295	548	0.85	72.5	623	0.69	0.031	3.23	0.432	0.51	0.57

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...	1.3	1.5	E8	0.23	68.3	<0.02	2.21	<0.20
NOV
21...	0.6	3.8	57	0.54	68.5	<0.02	4.87	<0.20
DEC
12...	0.5	4.0	73	0.52	88.6	<0.02	6.04	M
JAN
16...	0.5	6.5	79	0.58	77.5	<0.02	5.04	M
FEB
13...	0.5	5.2	77	0.68	69.0	<0.02	4.49	M
MAR
27...	0.7	3.5	45	0.57	84.3	<0.02	3.50	<0.20
APR
17...	0.8	3.6	53	0.34	105	<0.02	5.59	<0.20
MAY
08...	0.9	3.4	45	0.32	56.8	<0.02	5.91	<0.20
22...	0.9	6.7	57	0.45	96.9	<0.02	2.91	<0.20
JUN
05...	0.3	1.9	66	E.06	20.3	<0.02	1.06	<0.20
19...	0.6	2.2	50	0.09	20.3	<0.02	1.57	<0.20
JUL
10...	0.5	3.0	38	0.15	36.6	<0.02	2.15	<0.20
24...	1.0	3.0	17	0.08	36.0	<0.02	2.71	<0.20
AUG
14...	1.0	2.0	16	0.12	19.8	<0.02	3.71	<0.20
SEP
11...	0.9	3.3	31	0.12	28.9	<0.02	1.32	<0.20
< -- Actual value is known to be less than the value shown. E -- Estimated laboratory analysis value. M -- Presence of material verified but not quantified.

06741520 BIG THOMPSON RIVER BELOW 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
21...	<0.4	<0.4	<0.4	<0.4	<0.4
DEC
12...	<0.4	<0.4	M	<0.4	<0.4
JAN
16...	<0.4	<0.4	<0.4	<0.4	<0.4
FEB
13...	<0.4	<0.4	<0.4	<0.4	<0.4
MAR
27...	<0.4	<0.4	<0.4	<0.4	<0.4
APR
17...	<0.4	<0.4	<0.4	<0.4	<0.4
MAY
08...	<0.4	<0.4	<0.4	<0.4	M
22...	<0.4	<0.4	<0.4	<0.4	M
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
24...	<0.4	<0.4	<0.4	<0.4	<0.4
AUG
15...	<0.4	<0.4	<0.4	<0.4	<0.4
SEP
11...	<0.4	<0.4	<0.4	<0.4	<0.4
< -- Actual value is known to be less than the value shown. M -- Presence of material verified but not quantified.