ROARING FORK RIVER BASIN

09081000 ROARING FORK RIVER NEAR EMMA, CO

LOCATION.--Lat 39°22'24", long 107°05'00", in SW14NW14 sec.11, T.8 S., R.87 W., Eagle County, Hydrologic Unit 14010004, on left bank 10 ft upstream from bridge on Hooks Lane, 1.2 mi downstream from Sopris Creek, and 1.2 mi northwest of Emma.

DRAINAGE AREA.--853 mi2, approximately.

WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--August 1908 to September 1909 (monthly discharge only, published in WSP 1313), March 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=09081000

GAGE.--Water-stage recorder with satellite telemetry and crest-stage gage. Elevation of gage is 6,470 ft above NGVD of 1929, from topographic map. Prior to Mar. 1998, nonrecording gage at different datum.

REMARKS.--Records good except for the period July 3-24, which is fair, and estimated daily discharges, which are poor. Diversions for irrigation of about 16,000 acres above station. Transmountain diversions to Arkansas River basin through Busk-Ivanhoe tunnel since 1925 and through Twin Lakes tunnel since 1935. Transmountain diversion from headwaters of Fryingpan River through Charles H. Boustead Tunnel to Arkansas River basin began May 16, 1972. Natural flow of stream affected by storage in Ruedi Reservoir on Fryingpan River (station 09080190) since May 1968.

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	277	250	221	195	168	158	181	291	3,860	814	326	337
2	277	249	210	179	170	152	190	322	3,190	810	323	332
3	295	227	204	182	170	154	192	322	2,630	778	319	379
4	289	214	200	183	160	163	185	361	2,440	748	316	367
5	282	217	207	e170	e150	162	177	351	2,190	727	305	376
6	277	207	192	e155	e120	159	185	315	1,670	694	300	371
7	274	209	189	e165	e115	162	181	300	1,480	664	311	425
8	268	214	191	e160	135	163	174	286	1,330	640	316	438
9	262	264	175	e165	157	162	177	274	1,410	601	352	379
10	268	233	177	e195	e155	164	186	277	1,540	573	345	424
11	250	219	187	187	e165	169	200	269	1,420	541	337	406
12	246	200	209	183	e160	177	227	262	1,480	518	339	368
13	244	210	203	178	e175	180	266	277	1,570	501	355	369
14	242	233	186	180	187	182	280	293	1,360	476	349	356
15	242	227	198	170	175	185	266	376	1,430	455	343	341
16	243	207	190	157	163	185	244	424	1,510	453	349	327
17	243	218	202	182	164	186	244	577	1,320	430	362	324
18	242	222	196	e140	162	186	254	690	1,290	420	379	377
19	226	210	180	e160	159	177	239	739	1,310	410	376	407
20	222	215	160	e170	154	172	231	717	1,260	413	353	414
21	218	216	197	e175	164	179	229	716	1,180	403	337	401
22	216	213	165	182	161	173	249	793	1,130	395	335	395
23	229	220	139	180	156	177	274	1,040	1,120	390	333	385
24	229	227	173	172	160	192	262	1,240	1,040	369	333	376
25	223	227	176	172	163	188	254	1,500	933	346	332	374
26	219	193	161	167	159	181	268	1,440	922	432	334	365
27	225	179	166	166	158	191	301	1,750	920	535	336	358
28	223	197	e170	168	158	177	324	2,530	908	495	345	352
29	220	214	e180	166	---	165	313	3,120	877	353	334	349
30	219	217	e180	164	---	171	309	3,680	851	325	339	341
31	241	---	e160	168	---	175	---	3,440	---	310	342	---
TOTAL	7,631	6,548	5,744	5,336	4,443	5,367	7,062	28,972	45,571	16,019	10,455	11,213
MEAN	246	218	185	172	159	173	235	935	1,519	517	337	374
MAX	295	264	221	195	187	192	324	3,680	3,860	814	379	438
MIN	216	179	139	140	115	152	174	262	851	310	300	324
AC-FT	15,140	12,990	11,390	10,580	8,810	10,650	14,010	57,470	90,390	31,770	20,740	22,240
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1998 - 2003, BY WATER YEAR (WY)
MEAN	381	283	250	237	215	218	342	920	1,439	786	506	420
MAX	555	318	283	270	245	260	551	1,177	2,476	1,495	741	547
(WY)	(2000)	(2000)	(2002)	(2002)	(2000)	(1999)	(1998)	(1998)	(1999)	(1999)	(1999)	(1999)
MIN	246	218	185	172	159	173	235	399	519	307	298	292
(WY)	(2003)	(2003)	(2003)	(2003)	(2003)	(2003)	(2003)	(2002)	(2002)	(2002)	(2002)	(2002)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1998 - 2003
ANNUAL TOTAL	103,927	154,361
ANNUAL MEAN	285	423	481
HIGHEST ANNUAL MEAN			680 1999
LOWEST ANNUAL MEAN			308 2002
HIGHEST DAILY MEAN	920 Jun 1	3,860 Jun 1	3,860 Jun 1, 2003
LOWEST DAILY MEAN	139 Dec 23	e115 Feb 7	e115 Feb 7, 2003
ANNUAL SEVEN-DAY MINIMUM	164 Dec 22	142 Feb 4	142 Feb 4, 2003
MAXIMUM PEAK FLOW		4,350 May 30	8,070 Jun 19, 1909
MAXIMUM PEAK STAGE		9.33 May 30	a10.40 Jun 19, 1909
ANNUAL RUNOFF (AC-FT)	206,100	306,200	348,500
10 PERCENT EXCEEDS	388	913	986
50 PERCENT EXCEEDS	264	244	304
90 PERCENT EXCEEDS	193	163	208

e Estimated. a Datum then in use.