GUNNISON RIVER BASIN

09146020 UNCOMPAHGRE RIVER NEAR OURAY, CO

LOCATION.--Lat 38°02'36", long 107°40'57", in SE14SE14 sec.24, T.44 N., R.8 W., Ouray County, Hydrologic Unit 14020006, on right bank at downstream side of foot bridge, 0.4 mi downstream from Bridalveil Creek, and 1.6 mi north of Ouray.

DRAINAGE AREA.--77.0 mi2.

WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--April 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=09146020

GAGE.--Water-stage recorder with satellite telemetry. Elevation of gage is 7,600 ft above NGVD of 1929, from topographic map.

REMARKS.--No estimated daily discharges. Records good. Slight regulation of low flow by power plant at Ouray. One small diversion above station for irrigation below station.

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	65	38	30	19	21	18	56	145	860	164	67	64
2	79	36	28	20	21	19	51	143	832	162	79	60
3	92	27	29	20	20	20	42	144	708	157	65	57
4	93	33	26	20	20	20	37	136	627	146	64	55
5	79	29	27	21	20	20	35	110	557	137	58	63
6	72	29	25	21	18	19	34	96	452	125	55	78
7	68	30	25	22	16	22	34	92	425	117	53	79
8	67	32	25	24	17	24	38	88	425	115	54	74
9	66	38	24	22	16	27	52	80	435	110	50	259
10	62	35	24	20	15	32	62	76	416	104	51	272
11	60	36	23	21	16	33	78	85	398	97	49	178
12	56	34	25	20	16	37	84	136	358	91	54	169
13	53	36	24	20	19	47	101	184	311	85	81	178
14	51	34	23	22	20	42	110	231	289	81	98	166
15	48	31	25	21	19	37	101	261	327	80	74	148
16	46	33	23	19	19	35	85	309	294	81	73	136
17	44	36	24	19	19	32	89	392	247	80	72	130
18	43	34	24	19	21	31	80	390	230	76	71	118
19	42	33	23	20	21	30	70	373	237	74	63	109
20	40	36	22	20	21	30	73	397	235	71	58	103
21	39	42	24	20	20	31	82	459	231	69	55	96
22	40	42	23	20	20	36	80	583	245	71	61	88
23	42	38	22	20	20	46	71	703	239	67	85	84
24	41	35	22	20	20	43	72	738	213	65	68	82
25	38	34	21	20	20	48	106	653	188	73	61	80
26	39	29	20	19	19	44	148	715	187	66	57	78
27	44	29	19	20	19	37	180	889	190	63	64	76
28	39	30	20	20	19	36	188	1,040	186	72	77	74
29	39	31	20	20	---	33	167	1,100	180	91	68	73
30	39	31	20	19	---	37	151	1,030	172	72	90	73
31	41	---	20	21	---	42	---	878	---	73	71	---
TOTAL	1,667	1,011	730	629	532	1,008	2,557	12,656	10,694	2,935	2,046	3,300
MEAN	53.8	33.7	23.5	20.3	19.0	32.5	85.2	408	356	94.7	66.0	110
MAX	93	42	30	24	21	48	188	1,100	860	164	98	272
MIN	38	27	19	19	15	18	34	76	172	63	49	55
AC-FT	3,310	2,010	1,450	1,250	1,060	2,000	5,070	25,100	21,210	5,820	4,060	6,550
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 2001 - 2003, BY WATER YEAR (WY)
MEAN	44.3	30.7	23.4	19.9	18.9	32.8	92.0	331	284	92.0	58.9	75.7
MAX	53.8	33.7	23.5	20.3	19.0	33.1	98.9	408	368	138	76.4	110
(WY)	(2003)	(2003)	(2003)	(2003)	(2003)	(2002)	(2002)	(2003)	(2001)	(2001)	(2001)	(2003)
MIN	34.8	27.6	23.2	19.6	18.8	32.5	85.2	179	126	43.6	34.4	48.1
(WY)	(2002)	(2002)	(2002)	(2002)	(2002)	(2003)	(2003)	(2002)	(2002)	(2002)	(2002)	(2001)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 2001 - 2003
ANNUAL TOTAL	22,344	39,765
ANNUAL MEAN	61.2	109	84.0
HIGHEST ANNUAL MEAN			109 2003
LOWEST ANNUAL MEAN			59.1 2002
HIGHEST DAILY MEAN	273 May 31	1,100 May 29	1,100 May 29, 2003
LOWEST DAILY MEAN	16 Feb 9	15 Feb 10	15 Feb 10, 2003
ANNUAL SEVEN-DAY MINIMUM	17 Feb 4	16 Feb 6	16 Feb 6, 2003
MAXIMUM PEAK FLOW		1,400 May 28	1,400 May 28, 2003
MAXIMUM PEAK STAGE		5.74 May 28	5.74 May 28, 2003
ANNUAL RUNOFF (AC-FT)	44,320	78,870	60,860
10 PERCENT EXCEEDS	143	246	180
50 PERCENT EXCEEDS	38	54	39
90 PERCENT EXCEEDS	19	20	20