ARKANSAS RIVER BASIN

07119700 ARKANSAS RIVER AT CATLIN DAM NEAR FOWLER, CO

LOCATION.--Lat 38°07'33", long 103°54'41", in NE14NE14 sec.20, T.22 S., R.58 W., Otero County, Hydrologic Unit 11020005, on right bank at Catlin Canal flume gage, 2.2 mi downstream from diversion dam for Catlin Canal, 2.3 mi downstream from Apishapa River, and 6.0 mi east of Fowler.

DRAINAGE AREA.--10,901 mi2, of which 54 mi2 is probably noncontributing.

WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--October 1964 to current year. Statistical summary computed for 1975 to current year, subsequent to completion of Pueblo Reservoir. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=07119700

GAGE.--Water-stage recorder with satellite telemetry on river; water-stage recorder with satellite telemetry and Parshall flume on Catlin Canal. Datum of gage on river is 4,245.92 ft and on canal is 4,257.87 ft above NGVD of 1929. Prior to May 13, 1971, gage on river at site 2.2 mi upstream at datum 24.08 ft higher, and gage on canal at site 1.7 mi upstream at datum 3.26 ft higher.

REMARKS.--Records good, except for estimated daily discharges, which are poor. Discharge computed by combining discharge of river downstream from canal with that of Catlin Canal. Natural flow of stream affected by storage reservoirs, power developments, transbasin and transmountain diversions, diversions for irrigation and municipal use, ground-water withdrawals, return flows from irrigated areas, and flows from sewage-treatment plants. Flow partly regulated by Pueblo Reservoir (station 07099350) about 69 mi upstream since Jan. 9, 1974.

COOPERATION.--Records collected and computed by Colorado Division of Water Resources and reviewed by Geological Survey.

Discharge, cubic feet per second 

WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

DAILY MEAN VALUES

DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP
1	32	157	30	94	27	81	196	261	2,210	942	319	673
2	41	184	39	74	28	73	152	334	2,870	838	234	552
3	39	189	40	73	35	58	195	319	3,450	765	263	381
4	65	171	50	73	30	26	265	281	3,530	640	270	268
5	87	197	47	72	29	24	317	264	3,170	577	275	217
6	110	198	46	67	32	33	370	255	2,650	570	278	205
7	e110	207	48	51	e30	34	416	283	1,410	595	270	192
8	115	209	46	29	e30	27	453	282	1,100	589	271	187
9	107	199	42	23	e40	27	448	246	1,420	586	511	213
10	96	218	45	22	e60	29	382	166	1,170	584	255	242
11	89	220	44	28	e75	29	378	113	1,210	565	207	270
12	79	228	31	51	e77	22	356	111	1,340	520	139	304
13	88	231	30	66	e75	15	328	93	1,520	437	125	312
14	88	256	30	93	78	62	297	73	1,660	428	112	340
15	77	231	32	74	74	97	276	172	1,680	417	100	313
16	80	67	27	65	73	148	260	311	1,750	390	95	312
17	88	36	25	68	74	152	231	516	1,660	346	97	298
18	96	29	22	63	65	166	239	507	1,980	315	96	268
19	92	14	23	64	30	237	330	567	1,730	248	96	205
20	79	15	e22	56	32	298	535	546	1,520	234	175	154
21	75	34	e20	30	29	326	466	647	2,220	310	97	135
22	90	34	e45	e21	29	351	420	808	1,640	338	69	134
23	83	32	e60	e22	e32	363	363	956	1,630	270	58	127
24	90	30	e80	e22	e35	334	411	1,060	1,370	241	46	119
25	101	25	e62	e26	e40	325	531	1,230	1,210	230	49	106
26	105	26	e56	e31	e50	297	597	1,550	1,100	187	39	96
27	92	36	e55	32	e70	315	468	1,950	1,040	165	59	88
28	81	37	e75	27	e75	278	356	1,880	1,010	155	90	78
29	147	37	e85	26	---	273	305	1,840	935	1,050	95	68
30	156	29	98	26	---	252	278	1,980	914	381	132	57
31	136	---	82	26	---	227	---	2,290	---	400	310	---
TOTAL	2,814	3,576	1,437	1,495	1,354	4,979	10,619	21,891	52,099	14,313	5,232	6,914
MEAN	90.8	119	46.4	48.2	48.4	161	354	706	1,737	462	169	230
MAX	156	256	98	94	78	363	597	2,290	3,530	1,050	511	673
MIN	32	14	20	21	27	15	152	73	914	155	39	57
AC-FT	5,580	7,090	2,850	2,970	2,690	9,880	21,060	43,420	103,300	28,390	10,380	13,710
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1975 - 2003, BY WATER YEAR (WY)
MEAN	401	436	385	408	376	412	599	1,266	2,038	1,316	964	430
MAX	1,234	925	804	854	1,249	912	1,526	3,901	4,420	4,108	2,384	1,209
(WY)	(1985)	(1985)	(2000)	(1985)	(1985)	(1998)	(1987)	(1999)	(1995)	(1995)	(1984)	(1982)
MIN	90.8	119	46.4	48.2	48.4	161	86.6	212	280	176	25.2	34.7
(WY)	(2003)	(2003)	(2003)	(2003)	(2003)	(2003)	(1978)	(1981)	(2002)	(2002)	(2002)	(2002)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1975 - 2003
ANNUAL TOTAL	52,623.54	126,723
ANNUAL MEAN	144	347	a754
HIGHEST ANNUAL MEAN			1,327 1995
LOWEST ANNUAL MEAN			206 2002
HIGHEST DAILY MEAN	686 Jun 11	3,530 Jun 4	e,b16,300 May 1, 1999
LOWEST DAILY MEAN	0.00 Sep 11	14 Nov 19	c0.00 Sep 11, 2002
ANNUAL SEVEN-DAY MINIMUM	1.2 Sep 5	24 Dec 15	1.2 Sep 5, 2002
MAXIMUM PEAK FLOW		d3,610 Jun 4	e,d,f26,000 May 1, 1999
MAXIMUM PEAK STAGE		g5.41 Jun 4	11.30 May 1, 1999
ANNUAL RUNOFF (AC-FT)	104,400	251,400	546,200
10 PERCENT EXCEEDS	302	1,020	1,620
50 PERCENT EXCEEDS	105	148	450
90 PERCENT EXCEEDS	22	29	175

e Estimated. a Average discharge for 9 years (water years 1965-73), 636 ft3/s, 460,800 acre-ft/yr, prior to completion of Pueblo Dam. b Maximum daily discharge for period of record, 18,300 ft3/s, Jun 18, 1965. c Also minimum daily discharge for period of record. d Maximum combined instantaneous discharge. f Maximum discharge and gage height for period of record, 43,200 ft3/s, Jun 18, 1965, gage height, 7.95 ft, site and datum then in use, from rating curve extended above 13,000 ft3/s on basis of flow-over-dam computation of peak flow. g Gage height at Arkansas River gage.