a Suspended-sediment concentration determined from a composite sample.

b Suspended-sediment concentration determined from a subsample split of a composite sample.

ROAN CREEK BASIN

09095300 DRY FORK AT UPPER STATION, NEAR DE BEQUE, CO-Continued

(National Water-Quality Assessment Program station)

WATER-QUALITY RECORDS

PERIOD OF RECORD.--October 1995 to September 1998, November 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=09095300

PERIOD OF DAILY RECORD.--WATER TEMPERATURE: October 1996 to September 1998.

INSTRUMENTATION.--Water temperature sensor and logger, October 1996 to September 1998.

REMARKS.--Upper Colorado River Basin National Water Quality Assessment Program station (NAWQA).

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)	Alka- linity, wat flt inc tit field, mg/L as CaCO3 (39086)	Bicar- bonate, wat flt incrm. titr., field, mg/L (00453)	Carbon- ate, wat flt incrm. titr., field, mg/L (00452)	Chlor- ide, water, fltrd, mg/L (00940)	Sulfate water, fltrd, mg/L (00945)	Ammonia + org-N, water, unfltrd mg/L as N (00625)	Ammonia water, fltrd, mg/L as N (00608)
OCT
22...	1305	0.08	10.7	8.5	3,920	10.2	415	445	30	22.4	1,910	0.36	<0.04
NOV
27...	1120	0.37	12.3	8.5	4,350	0.0	484	536	26	24.3	2,200	0.56	<0.04
DEC
30...	1245	0.34	12.3	8.4	4,000	0.0	549	625	22	17.4	1,940	0.33	<0.04
FEB
19...	1245	0.66	11.4	8.6	2,410	2.9	349	389	18	10.7	1,040	0.74	<0.04
APR
16...	1200	0.25	9.4	8.5	4,180	13.8	488	534	30	24.8	2,060	0.33	<0.04
JUN
27...	1200	0.28	8.6	8.4	3,030	21.7	364	415	14	15.9	1,370	0.44	<0.04
AUG
29...	1135	0.04	9.6	8.4	3,410	22.2	349	367	29	17.6	1,620	0.56	<0.04

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

Date	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, unfltrd mg/L (00665)
OCT
22...	E.04	<0.008	<0.02	0.021
NOV
27...	0.48	E.005	<0.02	0.086
DEC
30...	0.53	<0.008	<0.02	0.037
FEB
19...	0.34	0.011	0.02	0.167
APR
16...	<0.06	<0.008	<0.02	0.023
JUN
27...	<0.06	<0.008	<0.02	0.019
AUG
29...	<0.06	<0.008	<0.02	0.018
< -- Actual value is known to be less than the value shown. E -- Estimated laboratory analysis value.

SUSPENDED SEDIMENT DISCHARGE, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

Date	Time	Instan- taneous dis- charge, cfs (00061)	Temper- ature, water, deg C (00010)	Sus- pended sedi- ment concen- tration mg/L (80154)	Sus- pended sedi- ment load, tons/d (80155)
OCT
22...	1300	0.08	10.2	a15	0.00
22...	1305	0.08	10.2	b7	0.00
NOV
27...	1115	0.37	--	a240	0.24
27...	1120	0.37	0.0	b245	0.24
DEC
30...	1240	0.34	--	a100	0.09
30...	1245	0.34	0.0	b72	0.07
FEB
19...	1240	0.66	--	a229	0.41
19...	1245	0.66	2.9	b191	0.34
APR
16...	1155	0.25	13.8	a44	0.03
16...	1200	0.25	13.8	b58	0.04
JUN
27...	1200	0.28	21.7	b43	0.03
27...	1205	0.28	--	a36	0.03
AUG
29...	1130	0.04	--	a32	0.00
29...	1135	0.04	22.2	b15	0.00