SAN JUAN RIVER BASIN

09361500 ANIMAS RIVER AT DURANGO, CO

LOCATION.--Lat 37°16'45", long 107°52'47", in SW14SW14 sec.20, T.35 N., R.9 W., La Plata County, Hydrologic Unit 14080104, on left bank at abandoned power plant at Durango, 0.8 mi upstream from Lightner Creek.

DRAINAGE AREA.--692 mi2.

PERIOD OF RECORD.--July to December 1895, April 1896 to December 1898, April 1899 to December 1900, March to August 1901 (gage heights and discharge measurements only), April to November 1902, March to April 1903 (gage heights only, erroneously stated as discredited in WSP 1563), May to October 1903, July 1904 to December 1905, January to December 1910 (gage heights only), January to September 1911, January 1912 to current year. Monthly or yearly discharge 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=09361500

REVISED RECORDS.--WSP 764: Drainage area. WSP 929: 1927(M). WSP 1243: 1911, 1918(M). WSP 1563: 1911-25 (monthly figures only).

GAGE.--Water-stage recorder with satellite telemetry. Datum of gage is 6,501.57 ft above NGVD of 1929. See WSP 1713 or 1733 for history of changes prior to Mar. 2, 1921.

REMARKS.--Records good except for estimated daily discharges, which are poor. Diversions for irrigation of about 4,000 acres upstream from station. Natural regulation by many lakes and regulation for power upstream from station. Several measurements of specific conductance and water temperature were obtained and are published in the "Supplemental Water-Quality Data For Gaging Stations" section of this report.

EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum stage since at least 1885, that of Oct. 5, 1911.

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	305	231	216	e158	165	150	e271	995	3,200	558	293	406
2	333	229	209	e158	146	131	295	953	3,180	538	294	353
3	368	229	216	171	142	128	299	923	2,830	521	299	328
4	389	211	219	176	153	150	282	969	2,480	498	282	312
5	378	216	206	158	147	159	273	892	2,250	474	255	310
6	384	203	206	159	e132	151	243	786	1,900	447	234	325
7	377	197	202	180	e128	150	238	728	1,630	413	226	358
8	380	200	183	171	e128	153	255	677	1,540	390	256	341
9	388	244	176	173	132	140	257	619	1,550	377	291	415
10	379	240	180	179	137	145	286	566	1,520	359	271	1,480
11	367	221	175	184	e149	168	345	517	1,440	339	272	1,260
12	353	216	170	161	157	184	394	552	1,350	325	275	1,020
13	332	208	181	150	182	196	399	777	1,190	310	289	1,060
14	316	215	189	172	179	214	474	900	1,040	296	476	1,020
15	298	207	173	178	168	229	612	1,250	1,060	285	499	908
16	288	198	186	170	143	219	578	1,280	1,060	273	424	811
17	274	195	202	169	140	226	577	1,700	942	268	433	756
18	271	201	197	165	157	229	594	2,030	869	260	423	692
19	253	195	182	148	151	218	561	1,860	858	257	389	e641
20	247	194	e165	155	149	209	508	1,910	923	262	347	580
21	236	198	e159	171	149	210	504	2,150	855	258	316	532
22	229	201	e158	174	151	206	523	2,730	839	250	306	487
23	251	209	154	172	132	197	525	3,240	846	250	302	461
24	257	214	e161	171	127	217	488	3,180	807	246	317	433
25	250	209	e160	172	158	275	499	2,900	736	236	342	411
26	242	235	e160	151	162	283	587	2,680	693	228	344	391
27	258	228	e161	149	157	287	816	3,400	681	243	344	367
28	249	221	e159	166	155	271	1,010	4,100	653	274	381	348
29	241	219	156	162	---	253	1,100	4,160	622	312	458	340
30	239	218	e157	157	---	224	1,020	3,850	594	333	429	337
31	232	---	e158	161	---	e222	---	3,470	---	316	479	---
TOTAL	9,364	6,402	5,576	5,141	4,176	6,194	14,813	56,744	40,138	10,396	10,546	17,483
MEAN	302	213	180	166	149	200	494	1,830	1,338	335	340	583
MAX	389	244	219	184	182	287	1,100	4,160	3,200	558	499	1,480
MIN	229	194	154	148	127	128	238	517	594	228	226	310
AC-FT	18,570	12,700	11,060	10,200	8,280	12,290	29,380	112,600	79,610	20,620	20,920	34,680
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1898 - 2003, BY WATER YEAR (WY)
MEAN	409	285	222	202	205	296	832	2,288	2,825	1,190	587	464
MAX	1,866	814	412	326	352	844	1,818	4,791	5,846	3,057	1,806	1,709
(WY)	(1942)	(1942)	(1942)	(1973)	(1920)	(1916)	(1985)	(1920)	(1917)	(1995)	(1999)	(1970)
MIN	162	158	129	103	110	133	246	474	357	154	134	161
(WY)	(1957)	(1935)	(1990)	(1933)	(1933)	(1990)	(1977)	(1977)	(2002)	(2002)	(2002)	(1956)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1898 - 2003
ANNUAL TOTAL	91,125	186,973
ANNUAL MEAN	250	512	816
HIGHEST ANNUAL MEAN			1,366 1917
LOWEST ANNUAL MEAN			238 2002
HIGHEST DAILY MEAN	947 Sep 12	4,160 May 29	10,700 Jun 19, 1949
LOWEST DAILY MEAN	116 Aug 28	127 Feb 24	94 Mar 2, 1913
ANNUAL SEVEN-DAY MINIMUM	119 Aug 22	136 Feb 5	100 Dec 19, 1917
MAXIMUM PEAK FLOW		4,680 May 29	a25,000 Oct 5, 1911
MAXIMUM PEAK STAGE		5.88 May 29	11.00 Oct 5, 1911
ANNUAL RUNOFF (AC-FT)	180,700	370,900	591,200
10 PERCENT EXCEEDS	463	1,050	2,210
50 PERCENT EXCEEDS	193	271	340
90 PERCENT EXCEEDS	130	157	179

e Estimated. a Present site and datum, from rating extended above 13,000 ft3/s.