ARKANSAS RIVER BASIN

07103990 COTTONWOOD CREEK AT MOUTH AT PIKEVIEW, CO-Continued

WATER-QUALITY RECORDS

PERIOD OF RECORD.--April 1998 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=07103990

PERIOD OF DAILY RECORD.--

SUSPENDED SEDIMENT: April 1998 to current year (seasonal records only).

INSTRUMENTATION.--Pumping sediment sampler with satellite telemetry.

EXTREMES FOR PERIOD OF DAILY RECORD.--

SEDIMENT CONCENTRATION (seasonal only): Maximum daily mean, 7,870 mg/L, May 25, 1999; minimum daily mean, 96 mg/L, Oct. 2, 2001.

SUSPENDED-SEDIMENT DISCHARGE (seasonal only): Maximum daily, 13,500 tons (estimated), April 30, 1999; minimum daily, 0.59 ton (estimated), Oct. 11, 2002.

EXTREMES FOR CURRENT YEAR.--

SEDIMENT CONCENTRATION (seasonal only): Maximum daily mean, 3,390 mg/L, July 28; minimum daily mean, 134 mg/L, Oct. 7.

SUSPENDED-SEDIMENT DISCHARGE (seasonal only): Maximum daily, 1,900 tons, June 17; minimum daily, 0.59 ton (estimated), Oct. 11.

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)	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, unfltrd mg/L (00665)	E coli, modif. m-TEC, water, col/ 100 mL (90902)	E coli, m-TEC MF, water, col/ 100 mL (31633)	Fecal coli- form, M-FC 0.7u MF col/ 100 mL (31625)
NOV
06...	1030	e3.6	10.4	8.4	737	5.0	E.009	5.11	E.01	0.12	--	E44	50
JUN
24...	0915	6.6	7.3	8.3	786	18.0	E.022	4.14	0.03	0.23	E620	--	E640

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

Date	Sus- pended sedi- ment concen- tration mg/L (80154)	Sus- pended sedi- ment load, tons/d (80155)
NOV
06...	376	E3.7
JUN
24...	490	8.7
E -- Estimated laboratory analysis value. e -- Estimated.

WATER-QUALITY DATA DURING STORMWATER-RUNOFF SAMPLING,

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)	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, unfltrd mg/L (00665)	E coli, modif. m-TEC, water, col/ 100 mL (90902)	Fecal coli- form, M-FC 0.7u MF col/ 100 mL (31625)	Sus- pended sedi- ment concen- tration mg/L (80154)
JUN
12...	1815	47	7.9	8.1	354	16.0	0.210	1.81	0.06	1.98	7,400	E15000	4,090

WATER-QUALITY DATA DURING STORMWATER-RUNOFF SAMPLING,

WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

Date	Sus- pended sedi- ment load, tons/d (80155)
JUN
12...	519
E -- Estimated laboratory analysis value.

WATER-QUALITY DATA DURING MICROBIOLOGICAL SAMPLING,

WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

Date	Time	Instan- taneous dis- charge, cfs (00061)	Specif. conduc- tance, wat unf uS/cm 25 degC (00095)	Temper- ature, water, deg C (00010)	E coli, modif. m-TEC, water, col/ 100 mL (90902)	Fecal coli- form, M-FC 0.7u MF col/ 100 mL (31625)
JUN
25...	1110	4.0	717	21.0	E140	230
E -- Estimated laboratory analysis value.

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)	Specif. conduc- tance, wat unf uS/cm 25 degC (00095)	Temper- ature, water, deg C (00010)	Sus- pended sedi- ment concen- tration mg/L (80154)	Sus- pended sedi- ment load, tons/d (80155)
OCT
10...	0800	4.2	--	730	6.5	175	2.0
24...	1000	7.3	--	724	3.0	141	2.8
NOV
05...	1145	3.6	--	759	6.5	387	3.8
06...	1030	e3.6	--	737	5.0	376	e3.7
MAR
31...	1400	3.9	--	729	20.5	427	4.5
APR
08...	1230	3.5	--	702	16.0	--	--
08...	1245	4.2	--	702	16.0	466	5.3
21...	1200	2.7	--	691	15.5	720	5.2
24...	1530	33	--	294	16.0	1,870	167
MAY
12...	1015	3.7	--	714	15.5	222	2.2
12...	1145	4.2	--	712	20.5	232	2.6
30...	0930	3.7	--	667	20.0	369	3.7
JUN
02...	1300	2.7	--	659	25.5	294	2.1
12...	1245	3.7	--	716	19.5	170	1.7
12...	1815	47	--	354	16.0	4,090	519
18...	1815	7.2	--	604	--	619	12
24...	0915	6.6	--	786	18.0	490	8.7
25...	1130	4.2	--	757	22.0	571	6.5
30...	1215	4.2	--	719	--	268	3.0
JUL
01...	1245	2.7	--	638	--	316	2.3
08...	1030	3.7	696	--	23.0	526	5.3
18...	1400	3.2	--	703	--	255	2.2
AUG
01...	1315	3.7	728	--	--	235	2.3
11...	1230	2.7	700	--	--	191	1.4
25...	1130	4.8	690	--	--	289	3.7
29...	1430	203	198	--	--	4,270	2,340
29...	1500	124	278	--	--	3,350	1,120
SEP
02...	1600	5.3	759	--	--	259	3.7
09...	1130	4.8	734	--	--	235	3.0
17...	1415	4.2	732	--	--	313	3.5
e -- Estimated.

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	6.8	---	e10.0	3.7	---	---	5.2	---	---
2	9.9	---	e18.0	10	---	---	4.9	---	---
3	4.6	---	e2.4	4.6	---	---	5.9	---	---
4	4.4	173	2.1	3.3	---	---	5.3	---	---
5	3.9	---	e1.7	3.4	---	---	5.2	---	---
6	4.0	---	e1.5	e3.0	---	---	e5.0	---	---
7	3.9	134	1.4	e3.0	---	---	e4.5	---	---
8	4.1	---	e1.6	e3.0	---	---	e4.0	---	---
9	4.4	---	e1.9	e3.0	---	---	e4.0	---	---
10	3.8	157	1.6	e4.0	---	---	e3.5	---	---
11	e3.8	---	e0.59	e4.0	---	---	e3.0	---	---
12	3.6	163	1.6	e4.0	---	---	e3.0	---	---
13	4.1	197	2.2	e3.0	---	---	e3.5	---	---
14	3.8	---	e2.0	e3.0	---	---	e4.0	---	---
15	3.1	---	e1.6	e3.0	---	---	4.5	---	---
16	4.4	---	e2.2	e3.0	---	---	3.5	---	---
17	4.9	---	e2.4	e3.0	---	---	4.7	---	---
18	3.3	---	e1.6	e3.0	---	---	4.9	---	---
19	3.2	---	e1.4	e3.0	---	---	e5.0	---	---
20	2.8	---	e1.2	e3.0	---	---	e4.5	---	---
21	2.6	---	e1.1	e4.0	---	---	e4.0	---	---
22	3.6	---	e1.5	e4.0	---	---	e4.0	---	---
23	3.7	---	e1.4	e4.0	---	---	e4.0	---	---
24	5.3	141	2.0	e4.0	---	---	e4.0	---	---
25	4.2	---	e1.6	e5.0	---	---	e4.0	---	---
26	15	---	e40.0	e5.0	---	---	e4.0	---	---
27	12	---	e30.0	e5.0	---	---	e4.5	---	---
28	3.0	270	2.2	e5.0	---	---	e4.5	---	---
29	e3.0	---	e1.3	4.7	---	---	e4.5	---	---
30	4.7	---	e2.9	4.1	---	---	e4.5	---	---
31	3.8	---	e2.3	---	---	---	e4.0	---	---
TOTAL	147.7	---	145.29	117.8	---	---	134.1	---	---
	JANUARY			FEBRUARY			MARCH
1	e3.5	---	---	e3.0	---	---	e4.0	---	---
2	e3.0	---	---	e3.5	---	---	e5.0	---	---
3	e3.0	---	---	e3.5	---	---	e3.0	---	---
4	e4.0	---	---	e3.0	---	---	3.5	---	---
5	e4.0	---	---	e3.0	---	---	e3.0	---	---
6	e5.0	---	---	4.0	---	---	e3.0	---	---
7	e5.0	---	---	3.4	---	---	e2.5	---	---
8	e5.5	---	---	e3.0	---	---	e5.5	---	---
9	6.1	---	---	e3.0	---	---	2.4	---	---
10	4.9	---	---	e3.0	---	---	3.6	---	---
11	e4.0	---	---	e3.0	---	---	3.9	---	---
12	4.5	---	---	e4.0	---	---	4.1	---	---
13	e5.0	---	---	e5.0	---	---	4.3	---	---
14	e5.0	---	---	4.7	---	---	5.3	---	---
15	e5.0	---	---	5.7	---	---	4.5	---	---
16	e5.0	---	---	4.5	---	---	4.4	---	---
17	e4.0	---	---	4.7	---	---	9.7	---	---
18	e4.0	---	---	5.3	---	---	15	---	---
19	e4.0	---	---	13	---	---	8.9	---	---
20	3.7	---	---	6.5	---	---	32	---	---
21	3.9	---	---	4.1	---	---	14	---	---
22	3.7	---	---	4.6	---	---	12	---	---
23	e6.0	---	---	5.3	---	---	11	---	---
24	5.0	---	---	e4.5	---	---	22	---	---
25	6.1	---	---	e4.0	---	---	12	---	---
26	5.6	---	---	e4.0	---	---	7.1	---	---
27	4.3	---	---	e4.0	---	---	6.2	---	---
28	5.5	---	---	e4.0	---	---	5.2	---	---
29	e4.0	---	---	---	---	---	5.3	---	---
30	e3.5	---	---	---	---	---	5.4	---	---
31	e3.0	---	---	---	---	---	5.8	---	---
TOTAL	138.8	---	---	123.3	---	---	233.6	---	---
	APRIL			MAY			JUNE
1	4.9	---	e5.5	3.2	---	e2.3	16	1,470	235
2	4.6	---	e5.2	3.3	---	e2.4	2.7	334	2.5
3	3.8	---	e4.4	2.9	---	e2.0	2.6	---	e2.1
4	4.1	---	e4.7	4.1	---	e6.6	15	1,070	198
5	11	---	e29	2.2	---	e1.6	21	---	e125
6	8.4	---	e20	2.8	---	e1.9	3.0	---	e2.6
7	3.0	---	e4.0	2.6	---	e1.8	8.3	---	e20
8	3.5	454	4.3	2.6	---	e1.8	4.2	---	e3.1
9	3.1	---	e3.5	3.1	---	e3.3	6.3	---	e13
10	3.2	434	3.8	7.1	677	24	3.7	---	e2.6
11	3.3	491	4.4	2.8	---	e1.8	4.3	---	e2.4
12	2.9	374	2.9	2.4	227	1.5	8.6	731	53
13	3.3	284	2.6	2.4	211	1.3	6.9	---	e13
14	3.0	---	e2.1	e2.0	---	e0.99	5.3	---	e6.0
15	4.3	376	6.9	4.9	540	25	5.7	---	e6.0
16	3.6	---	e7.9	3.4	---	e6.2	5.9	370	5.9
17	3.0	---	e5.5	2.5	---	e2.7	53	2,850	1,900
18	e3.5	---	e2.4	2.4	325	2.1	7.9	878	20
19	4.6	---	e7.9	2.5	---	e1.9	33	---	e564
20	4.2	647	7.3	2.3	---	e1.8	10	---	e34
21	3.4	710	6.6	2.0	---	e1.4	6.5	---	e10
22	15	1,380	124	3.5	---	e2.5	6.0	---	e8.5
23	21	1,900	164	8.0	---	e26	5.7	---	e7.7
24	29	1,840	168	2.3	---	e2.1	5.3	---	e7.2
25	3.5	---	e5.9	3.5	---	e2.9	6.9	565	11
26	3.1	---	e3.0	4.6	---	e6.1	15	---	e81
27	3.2	---	e2.6	2.8	---	e2.8	2.5	---	e2.2
28	3.9	---	e3.1	2.5	---	e2.1	3.0	---	e3.2
29	3.4	---	e2.7	6.7	---	e26	3.2	---	e3.1
30	2.5	---	e1.9	3.4	380	3.4	3.3	281	2.5
31	---	---	---	3.8	336	3.5	---	---	---
TOTAL	173.3	---	616.1	104.6	---	171.79	280.8	---	3,344.6
	JULY			AUGUST			SEPTEMBER
1	3.0	305	2.5	3.1	240	2.0	7.8	---	e6.8
2	2.8	286	2.2	4.1	252	2.8	13	635	40
3	2.7	291	2.1	8.5	385	15	18	---	e65
4	2.5	---	e2.6	9.9	426	22	4.1	---	e3.6
5	2.7	540	4.0	3.0	---	e1.6	3.7	---	e2.5
6	3.4	638	5.8	3.5	151	1.4	12	---	e74
7	2.4	---	e3.8	3.9	---	e1.5	12	---	e35
8	3.2	533	4.6	3.2	---	e1.3	e6.0	---	e4.7
9	2.2	---	e3.3	7.3	486	31	e5.0	---	e3.4
10	2.8	539	4.1	e4.0	---	e1.2	4.0	243	2.7
11	2.6	426	3.0	3.7	287	4.6	4.3	267	3.1
12	3.7	---	e4.6	e4.0	---	e1.1	4.8	---	e4.5
13	3.0	353	2.9	e3.0	---	e0.69	7.7	379	7.9
14	2.9	---	e3.1	e3.0	---	e0.90	7.3	361	7.2
15	3.0	420	3.4	e2.5	---	e1.0	7.1	---	e6.6
16	5.8	604	19	e2.5	---	e1.0	5.2	---	e4.6
17	2.4	476	3.1	e2.5	---	e0.76	4.0	323	3.4
18	2.2	294	1.8	4.6	---	e13	4.2	340	3.9
19	13	672	69	e4.0	---	e1.1	4.6	311	3.8
20	3.9	---	e5.4	e3.0	---	e1.4	3.4	285	2.6
21	2.7	---	e2.2	e3.0	---	e1.2	3.1	---	e2.5
22	4.0	---	e3.3	e3.0	---	e1.2	3.8	---	e3.2
23	4.4	---	e3.7	e3.0	---	e1.2	3.4	312	2.9
24	3.3	---	e2.7	5.0	380	15	3.4	---	e2.6
25	4.2	---	e3.6	4.9	325	4.6	4.3	244	2.8
26	5.2	341	7.5	5.8	220	3.4	3.4	201	1.9
27	13	---	e92	16	1,250	169	3.7	---	e2.1
28	30	3,390	942	4.4	---	e5.5	3.8	301	3.1
29	4.2	---	e6.0	30	1,100	446	4.6	---	e5.7
30	3.3	---	e2.5	36	---	e295	3.7	596	5.8
31	2.8	---	e2.0	53	---	e797	---	---	---
TOTAL	147.3	---	1,217.8	247.4	---	1,844.45	175.4	---	317.9

e Estimated.