ARKANSAS RIVER BASIN

07126485 PURGATOIRE RIVER AT ROCK CROSSING NEAR TIMPAS, CO-Continued

WATER-QUALITY RECORDS

PERIOD OF RECORD.--October 1982 to September 1992, June 1997 to current year (seasonal peaks only). For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=07126485

PERIOD OF DAILY RECORD.--

SPECIFIC CONDUCTANCE: July 1983 to September 1992.

WATER TEMPERATURE: July 1983 to September 1992.

SUSPENDED SEDIMENT: August 1983 to September 1992, June 1997 to current year (seasonal peaks only).

INSTRUMENTATION.--Pumping sediment sampler with satellite telemetry.

REMARKS.--Daily suspended-sediment records are published for days when instantaneous discharge exceeds 100 ft3/s. Daily mean suspended-sediment concentrations published for days of partial flow might not reflect mean concentrations during the flow event, including Aug. 9. Daily maximum and minimum specific conductance and daily mean water-temperature data for July 1983 to September 1992 are available in files of the district office.

EXTREMES FOR PERIOD OF RECORD.--

SEDIMENT CONCENTRATIONS: Maximum daily mean, 54,900 mg/L, Aug. 16, 1986; minimum daily mean, 5 mg/L, Mar. 22, 1988, and Feb. 10, 1989.

SUSPENDED-SEDIMENT DISCHARGE: Maximum daily (occurred during period of seasonal record), 287,000 tons (estimated), May 2, 1999; minimum daily, 0.0 ton (estimated), several days during 1989 and 1990.

EXTREMES FOR CURRENT YEAR.--

SEDIMENT CONCENTRATIONS (seasonal peaks only): Maximum daily mean, 6,120 mg/L, Sept. 8; minimum daily mean, 115 mg/L, May 31.

SUSPENDED-SEDIMENT DISCHARGE (seasonal peaks only): Maximum daily, 13,200 tons, Aug. 9; minimum daily, 21 tons, May 31.

MISCELLANEOUS FIELD AND SUSPENDED-SEDIMENT DISCHARGE DATA, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

Date	Time	Instan- taneous dis- charge, cfs (00061)	Specif. conduc- tance, wat unf lab, uS/cm 25 degC (90095)	Temper- ature, water, deg C (00010)	Sus- pended sedi- ment concen- tration mg/L (80154)	Sus- pended sedi- ment load, tons/d (80155)
OCT
02...	1110	3.4	1,280	14.5	--	--
NOV
12...	1620	1.6	2,710	9.5	--	--
JAN
07...	1550	12	2,880	5.0	--	--
MAR
05...	1540	13	2,990	7.0	--	--
APR
10...	1830	34	942	17.0	198	18
30...	0845	45	921	17.0	284	35
JUN
03...	1650	23	970	25.5	--	--
JUL
02...	1110	2.4	1,410	26.5	--	--
AUG
15...	1200	2.8	1,000	24.0	97	0.72
SEP
19...	1355	6.3	1,640	20.0	--	--

SEDIMENT DISCHARGE, SUSPENDED (TONS/DAY) 

WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

Day	Mean discharge (cfs)	Mean concen- tration (mg/l)	Load (tons/ day)	Mean discharge (cfs)	Mean concen- tration (mg/l)	Load (tons/ day)	Mean discharge (cfs)	Mean concen- tration (mg/l)	Load (tons/ day)
OCTOBER                          NOVEMBER                          DECEMBER
1	4.2	---	---	0.92	---	---	4.6	---	---
2	3.4	---	---	0.92	---	---	4.6	---	---
3	2.9	---	---	0.85	---	---	5.0	---	---
4	2.3	---	---	0.82	---	---	5.6	---	---
5	2.0	---	---	0.80	---	---	5.5	---	---
6	1.6	---	---	0.77	---	---	5.6	---	---
7	1.5	---	---	0.76	---	---	6.0	---	---
8	1.3	---	---	0.74	---	---	11	---	---
9	1.2	---	---	0.98	---	---	9.2	---	---
10	1.1	---	---	1.4	---	---	7.4	---	---
11	0.91	---	---	1.4	---	---	6.7	---	---
12	0.85	---	---	1.5	---	---	6.8	---	---
13	0.78	---	---	1.9	---	---	6.6	---	---
14	0.74	---	---	2.0	---	---	7.1	---	---
15	0.68	---	---	2.4	---	---	6.9	---	---
16	0.67	---	---	3.1	---	---	6.8	---	---
17	0.66	---	---	3.2	---	---	6.5	---	---
18	0.66	---	---	2.8	---	---	e6.6	---	---
19	0.66	---	---	3.7	---	---	e6.6	---	---
20	0.67	---	---	4.3	---	---	e6.7	---	---
21	0.66	---	---	4.7	---	---	e6.6	---	---
22	0.66	---	---	4.6	---	---	e6.7	---	---
23	0.60	---	---	4.6	---	---	e6.8	---	---
24	0.68	---	---	4.6	---	---	e6.8	---	---
25	0.72	---	---	4.6	---	---	e6.8	---	---
26	0.74	---	---	4.3	---	---	e7.3	---	---
27	1.1	---	---	4.1	---	---	e7.6	---	---
28	0.96	---	---	3.9	---	---	e8.3	---	---
29	0.82	---	---	3.9	---	---	8.5	---	---
30	0.80	---	---	3.8	---	---	8.4	---	---
31	0.83	---	---	---	---	---	8.5	---	---
TOTAL	37.35	---	---	78.36	---	---	214.1	---	---
	JANUARY			FEBRUARY			MARCH
1	e11	---	---	11	---	---	11	---	---
2	e12	---	---	10	---	---	12	---	---
3	13	---	---	9.2	---	---	12	---	---
4	12	---	---	8.1	---	---	12	---	---
5	12	---	---	7.1	---	---	13	---	---
6	11	---	---	7.1	---	---	13	---	---
7	11	---	---	6.5	---	---	13	---	---
8	11	---	---	6.4	---	---	12	---	---
9	11	---	---	6.7	---	---	12	---	---
10	11	---	---	6.9	---	---	11	---	---
11	11	---	---	7.1	---	---	11	---	---
12	11	---	---	7.6	---	---	10	---	---
13	10	---	---	8.6	---	---	9.9	---	---
14	9.7	---	---	10	---	---	9.4	---	---
15	9.1	---	---	12	---	---	9.3	---	---
16	8.9	---	---	13	---	---	9.1	---	---
17	9.3	---	---	12	---	---	10	---	---
18	9.0	---	---	13	---	---	18	---	---
19	9.7	---	---	14	---	---	19	---	---
20	8.3	---	---	14	---	---	25	---	---
21	8.1	---	---	13	---	---	24	---	---
22	8.1	---	---	13	---	---	24	---	---
23	9.3	---	---	e12	---	---	31	---	---
24	11	---	---	e12	---	---	37	---	---
25	10	---	---	e11	---	---	123	---	---
26	11	---	---	e11	---	---	194	---	---
27	11	---	---	e10	---	---	199	---	---
28	11	---	---	9.9	---	---	208	---	---
29	11	---	---	---	---	---	96	---	---
30	11	---	---	---	---	---	60	---	---
31	11	---	---	---	---	---	45	---	---
TOTAL	323.5	---	---	282.2	---	---	1,292.7	---	---
	APRIL			MAY			JUNE
1	35	---	---	31	---	---	20	---	---
2	32	---	---	23	---	---	58	---	---
3	74	---	e70	18	---	---	26	---	---
4	198	---	e900	14	---	---	15	---	---
5	133	---	e300	13	---	---	16	---	---
6	73	---	---	12	---	---	138	275	212
7	55	---	---	10	---	---	124	---	e160
8	43	---	---	8.8	---	---	81	---	e80
9	37	---	---	8.0	---	---	71	---	---
10	32	---	---	7.4	---	---	67	---	---
11	28	---	---	7.0	---	---	63	---	---
12	24	---	---	6.5	---	---	68	---	---
13	20	---	---	6.0	---	---	66	---	---
14	33	---	---	5.5	---	---	40	---	---
15	46	---	---	5.8	---	---	21	---	---
16	44	---	---	6.0	---	---	14	---	---
17	32	---	---	5.4	---	---	52	1,070	1,190
18	34	---	---	4.5	---	---	25	874	129
19	28	---	---	4.8	---	---	122	2,470	1,100
20	23	---	---	4.5	---	---	43	---	---
21	19	---	---	4.2	---	---	30	---	---
22	33	---	---	4.1	---	---	32	---	---
23	147	481	251	3.7	---	---	22	---	---
24	378	2,720	2,740	3.4	---	---	25	---	---
25	220	4,190	2,490	43	---	e24	17	---	---
26	116	---	e200	17	---	---	11	---	---
27	76	---	---	41	---	---	12	---	---
28	66	---	---	22	---	---	9.9	---	---
29	57	---	---	12	---	---	11	---	---
30	43	---	---	7.7	---	---	5.8	---	---
31	---	---	---	41	115	21	---	---	---
TOTAL	2,179	---	---	400.3	---	---	1,305.7	---	---
	JULY			AUGUST			SEPTEMBER
1	3.8	---	---	5.1	---	---	0.21	---	---
2	2.6	---	---	2.5	---	---	0.15	---	---
3	5.8	---	---	1.4	---	---	7.5	---	---
4	7.0	---	---	0.84	---	---	14	---	---
5	6.4	---	---	0.54	---	---	7.1	---	---
6	3.9	---	---	0.27	---	---	19	---	---
7	2.4	---	---	0.09	---	---	192	1,920	1,740
8	1.7	---	---	0.00	---	---	241	6,120	4,470
9	1.2	---	---	465	5,750	13,200	133	---	e670
10	0.83	---	---	253	4,560	3,350	44	---	---
11	0.56	---	---	61	2,790	492	23	---	---
12	0.38	---	---	20	---	---	14	---	---
13	0.20	---	---	9.3	---	---	11	---	---
14	0.08	---	---	4.9	---	---	7.2	---	---
15	0.01	---	---	2.9	---	---	8.8	---	---
16	5.3	---	---	1.8	---	---	19	---	---
17	1.2	---	---	1.3	---	---	14	---	---
18	0.47	---	---	0.90	---	---	9.6	---	---
19	0.23	---	---	0.66	---	---	6.4	---	---
20	0.16	---	---	0.46	---	---	4.7	---	---
21	0.02	---	---	0.31	---	---	3.5	---	---
22	0.00	---	---	0.21	---	---	2.6	---	---
23	0.00	---	---	1.8	---	---	2.1	---	---
24	0.00	---	---	1.5	---	---	1.7	---	---
25	0.00	---	---	0.92	---	---	1.4	---	---
26	0.00	---	---	0.61	---	---	1.1	---	---
27	0.00	---	---	0.39	---	---	0.87	---	---
28	0.00	---	---	0.25	---	---	0.70	---	---
29	0.00	---	---	0.20	---	---	0.61	---	---
30	0.00	---	---	0.26	---	---	1.1	---	---
31	6.0	---	---	0.25	---	---	---	---	---
TOTAL	50.24	---	---	838.66	---	---	791.34	---	---

e Estimated.