GUNNISON RIVER BASIN

09114500 GUNNISON RIVER NEAR GUNNISON, CO

LOCATION.--Lat 38°32'31", long 106°56'57", in NW14NW14 sec.2, T.49 N., R.1 W., Gunnison County, Hydrologic Unit 14020002, on right bank 0.7 mi downstream from Antelope Creek and 1.2 mi west of Gunnison.

DRAINAGE AREA.--1,012 mi2.

WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--October 1910 to December 1928, October 1944 to current year. Monthly discharges only for some periods, published in WSP 1313. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09114500

REVISED RECORDS.--WSP 1313: 1911, 1916.

GAGE.--Water-stage recorder with satellite telemetry and crest-stage gage. Elevation of gage is 7,655 ft above NGVD of 1929, from topographic map.
Nov. 25, 1910 to Dec. 31, 1928, nonrecording gages (supplementary water-stage recorder Apr. 28, 1916 to June 17, 1918) at bridge about 0.6 mi downstream at various datums. April 11, 1945 to July 28, 1970, water-stage recorder at sites 0.4 mi upstream at different datum.

REMARKS.--Records good except for estimated daily discharges, which are poor. Flow regulated by Taylor Park Reservoir (station 09108500), 37 mi upstream from station. Diversions for irrigation of about 22,000 acres upstream from 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	286	228	e202	e185	e181	156	214	484	3,260	750	583	368
2	278	230	e200	e177	e183	154	236	481	2,940	746	568	347
3	258	222	e197	e182	e182	146	227	488	2,580	693	565	345
4	254	219	e195	e185	e177	174	225	516	2,330	667	575	354
5	245	222	e194	e181	e179	164	208	533	2,090	649	538	339
6	243	216	e191	e178	e170	160	199	480	1,900	628	521	338
7	241	218	e189	e179	e170	158	187	445	1,730	608	517	350
8	221	233	e188	e180	e174	162	173	422	1,590	569	506	344
9	218	257	e183	e183	e181	157	192	404	1,600	543	484	328
10	226	239	e180	e189	e179	163	208	367	1,700	527	476	618
11	226	240	e185	e187	e183	177	264	345	1,670	502	469	529
12	226	e230	e191	e184	e182	194	336	348	1,620	477	481	368
13	228	e218	e194	e180	e189	199	325	356	1,580	467	495	381
14	240	e220	e188	e186	e191	208	342	409	1,530	467	483	343
15	238	e214	e190	e185	e184	211	389	632	1,510	459	455	313
16	225	e207	e189	e177	185	214	326	790	1,550	488	416	281
17	223	e210	e190	e184	170	205	310	1,190	1,450	478	471	270
18	218	e207	e190	e176	165	204	300	1,430	1,400	507	441	257
19	217	e203	e183	e181	150	198	262	1,520	1,410	538	432	240
20	216	e207	e178	e182	149	188	263	1,410	1,430	541	390	207
21	210	e208	e190	e184	162	207	280	1,430	1,280	639	380	214
22	217	e210	e175	e184	174	191	290	1,580	1,220	781	377	224
23	222	e211	e170	e184	151	201	303	1,910	1,150	729	396	222
24	230	e208	e182	e182	144	204	269	2,110	1,060	732	398	213
25	227	e205	e183	e183	167	210	269	2,290	953	674	398	207
26	219	e197	e178	e181	155	206	321	2,110	896	642	401	202
27	228	e193	e179	e181	158	211	425	2,300	804	656	398	197
28	230	e200	e179	e182	162	191	511	2,670	790	649	436	198
29	231	e202	e183	e180	---	190	528	2,950	765	656	415	199
30	223	e203	e183	e180	---	191	525	3,230	767	613	408	193
31	222	---	e177	e182	---	208	---	3,170	---	555	395	---
TOTAL	7,186	6,477	5,776	5,644	4,797	5,802	8,907	38,800	46,555	18,630	14,268	8,989
MEAN	232	216	186	182	171	187	297	1,252	1,552	601	460	300
MAX	286	257	202	189	191	214	528	3,230	3,260	781	583	618
MIN	210	193	170	176	144	146	173	345	765	459	377	193
AC-FT	14,250	12,850	11,460	11,190	9,510	11,510	17,670	76,960	92,340	36,950	28,300	17,830
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1911 - 2003, BY WATER YEAR (WY)
MEAN	400	298	237	211	204	251	604	1,812	2,457	1,260	730	537
MAX	805	614	616	395	365	582	1,381	3,605	6,074	4,621	1,510	908
(WY)	(1969)	(1968)	(1966)	(1966)	(1971)	(1986)	(1962)	(1914)	(1918)	(1957)	(1957)	(1985)
MIN	186	162	128	119	111	117	214	283	425	288	261	170
(WY)	(1978)	(1964)	(1963)	(1945)	(1955)	(1964)	(1964)	(1977)	(1977)	(1977)	(2002)	(2002)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1911 - 2003
ANNUAL TOTAL	100,808	171,831
ANNUAL MEAN	276	471	752
HIGHEST ANNUAL MEAN			1,278 1995
LOWEST ANNUAL MEAN			256 1977
HIGHEST DAILY MEAN	788 Jun 1	3,260 Jun 1	11,400 Jun 11, 1918
LOWEST DAILY MEAN	116 Sep 6	144 Feb 24	80 Dec 27, 1962
ANNUAL SEVEN-DAY MINIMUM	122 Sep 1	156 Feb 23	95 Dec 25, 1962
MAXIMUM PEAK FLOW		3,510 May 30	a11,400 Jun 13, 1918
MAXIMUM PEAK STAGE		3.60 May 30	b6.74 Jul 1, 1957
ANNUAL RUNOFF (AC-FT)	200,000	340,800	544,600
10 PERCENT EXCEEDS	473	1,200	1,860
50 PERCENT EXCEEDS	222	228	386
90 PERCENT EXCEEDS	154	178	180

e Estimated. a Site and datum then in use, from rating curve extended above 5,000 ft3/s, gage height, 4.05 ft. b Site and datum then in use.