EAGLE RIVER BASIN

09067020 EAGLE RIVER BELOW WASTEWATER TREATMENT PLANT AT AVON, CO

LOCATION.--Lat 39°38'06", long 106°31'57", in NE14NE14 sec.11, T.5 S., R.82 W., Eagle County, Hydrologic Unit 14010003, on right bank 60 ft downstream from Eagle River Wastewater Treatment Plant effluent discharge point, and 0.2 mi upstream from Beaver Creek Boulevard bridge, in the city of Avon.

DRAINAGE AREA.--402 mi2.

PERIOD OF RECORD.--October 1999 to current year. October 1988 to September 1999, streamflow data were collected 0.6 mi upstream at site 09067005 Eagle River at Avon; streamflow records are considered to be equivalent. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=09067020

GAGE.--Water-stage recorder with satellite telemetry and crest-stage gage. Elevation of gage is 7,380 ft above NGVD of 1929, from topographic map. Prior to October 14, 1999, streamflow data were collected 0.6 mi upstream at site 09067005 Eagle River at Avon; streamflow records are considered to be equivalent.

REMARKS.--No estimated daily discharges. Records good except Nov. 18 to Mar. 18 and May 28 to June 13, which are fair, and June 14 to July 1, which are poor. Natural flow of stream affected by transmountain diversions, storage reservoirs, and diversions for irrigation and municipal use.

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	129	88	66	58	51	54	85	423	3,730	841	197	143
2	120	86	66	53	52	52	102	375	3,400	820	186	128
3	133	71	62	55	50	49	112	368	2,940	780	179	118
4	131	66	60	54	44	54	102	415	2,600	731	209	117
5	128	73	59	52	50	55	90	370	2,310	674	181	111
6	121	58	50	48	45	51	92	327	2,040	618	164	131
7	116	65	47	45	40	54	84	309	1,870	569	160	165
8	116	80	44	43	42	56	77	304	1,680	522	170	181
9	114	90	37	48	50	56	87	295	1,700	494	158	224
10	109	81	38	58	48	58	114	298	1,830	452	144	283
11	104	89	47	54	52	60	158	276	1,830	423	136	297
12	96	78	51	53	48	65	190	292	1,750	397	137	262
13	88	85	56	49	49	71	206	396	1,730	378	137	303
14	86	88	53	49	52	78	277	491	1,650	363	137	258
15	83	81	61	43	48	81	306	707	1,680	349	120	220
16	81	66	62	44	44	84	268	850	1,680	358	121	194
17	76	72	67	49	47	86	260	1,130	1,530	347	192	175
18	74	79	69	40	45	80	262	1,260	1,520	338	298	168
19	71	68	62	46	44	73	232	1,300	1,490	326	255	160
20	68	73	54	44	43	69	213	1,250	1,550	305	193	151
21	69	71	67	46	49	73	218	1,280	1,420	294	160	139
22	69	71	60	45	49	70	246	1,380	1,370	274	147	132
23	77	69	51	45	48	76	271	1,780	1,330	255	158	125
24	80	71	61	48	49	89	244	2,060	1,210	242	163	121
25	78	68	56	49	51	81	252	2,240	1,080	245	196	120
26	71	42	48	48	51	78	316	2,170	985	300	184	116
27	83	55	51	51	52	80	387	2,460	989	300	163	112
28	81	63	50	50	51	73	423	3,170	974	280	176	109
29	77	65	52	48	---	66	452	3,660	958	256	151	107
30	68	62	53	47	---	70	475	3,970	900	242	149	103
31	79	---	49	50	---	71	---	3,550	---	212	162	---
TOTAL	2,876	2,174	1,709	1,512	1,344	2,113	6,601	39,156	51,726	12,985	5,283	4,973
MEAN	92.8	72.5	55.1	48.8	48.0	68.2	220	1,263	1,724	419	170	166
MAX	133	90	69	58	52	89	475	3,970	3,730	841	298	303
MIN	68	42	37	40	40	49	77	276	900	212	120	103
AC-FT	5,700	4,310	3,390	3,000	2,670	4,190	13,090	77,670	102,600	25,760	10,480	9,860
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 2000 - 2003, BY WATER YEAR (WY)
MEAN	101	75.1	66.3	63.2	58.4	67.6	250	1,174	1,158	296	146	124
MAX	128	78.6	83.9	74.9	69.1	76.8	298	1,665	1,724	419	188	166
(WY)	(2000)	(2001)	(2001)	(2001)	(2000)	(2000)	(2000)	(2000)	(2003)	(2003)	(2001)	(2003)
MIN	77.2	70.9	55.1	48.8	48.0	53.5	220	555	488	114	65.1	80.0
(WY)	(2002)	(2002)	(2003)	(2003)	(2003)	(2002)	(2003)	(2002)	(2002)	(2002)	(2002)	(2002)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 2000 - 2003
ANNUAL TOTAL	59,477	132,452
ANNUAL MEAN	163	363	299
HIGHEST ANNUAL MEAN			369 2000
LOWEST ANNUAL MEAN			163 2002
HIGHEST DAILY MEAN	1,060 May 31	3,970 May 30	3,970 May 30, 2003
LOWEST DAILY MEAN	29 Sep 6	37 Dec 9	a29 Sep 6, 2002
ANNUAL SEVEN-DAY MINIMUM	31 Sep 2	45 Jan 15	31 Sep 2, 2002
MAXIMUM PEAK FLOW		4,670 May 30	4,670 May 30, 2003
MAXIMUM PEAK STAGE		9.26 May 30	9.26 May 30, 2003
ANNUAL RUNOFF (AC-FT)	118,000	262,700	216,700
10 PERCENT EXCEEDS	448	1,250	837
50 PERCENT EXCEEDS	74	109	95
90 PERCENT EXCEEDS	48	49	53

a Also occurred Sep 7, 2002.