PLATTE RIVER BASIN

06710247 SOUTH PLATTE RIVER BELOW UNION AVENUE, AT ENGLEWOOD, CO

LOCATION.--Lat 39°37'57", long 105°00'52", in SW14NW14 sec.9, T.5 S., R.68 W., Arapahoe County, Hydrologic Unit 10190002, on right bank 100 ft downstream from Englewood Water Treatment Plant, 200 ft downstream from Union Avenue bridge in Englewood, and 7.7 mi downstream from Chatfield Dam.

DRAINAGE AREA.--3,043 mi2.

PERIOD OF RECORD.--February 1996 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=06710247

GAGE.--Water-stage recorder with satellite telemetry and concrete control. Elevation of gage is 5,290 ft above NGVD of 1929, from topographic map.

REMARKS.--No estimated daily discharges. Records fair. Flow regulated by Chatfield Reservoir (station 06709600) 7.7 mi upstream. Diversions for municipal use by City of Englewood 100 ft upstream from gage. 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.

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	17	17	6.8	22	7.3	12	163	562	254	107	157	238
2	57	16	7.0	22	8.6	14	147	383	348	242	83	226
3	18	16	6.3	20	18	15	129	358	313	208	47	201
4	17	15	6.5	18	12	11	118	285	205	79	156	228
5	13	13	6.7	19	9.1	14	118	223	148	79	198	237
6	12	14	6.5	18	11	12	133	216	92	134	66	239
7	15	13	5.8	8.8	8.7	11	118	193	185	173	125	144
8	14	11	5.9	9.5	8.1	10	253	171	55	76	111	139
9	16	9.6	6.5	7.1	9.9	10	468	115	68	73	55	184
10	19	11	5.3	6.6	12	11	472	260	242	69	66	260
11	18	11	5.2	8.0	11	9.4	332	259	317	25	149	214
12	17	8.7	4.8	8.8	9.5	10	227	267	289	17	193	120
13	22	8.6	4.8	9.4	13	9.8	226	260	277	16	129	56
14	23	11	4.9	8.2	13	9.7	178	222	238	31	127	54
15	24	9.4	5.8	8.5	26	8.8	178	149	111	112	109	52
16	22	8.6	11	6.9	15	9.4	426	182	218	118	39	48
17	23	9.9	6.4	6.6	12	48	343	230	225	121	38	43
18	22	9.3	6.9	6.6	11	63	249	207	327	129	37	30
19	21	8.0	5.0	7.3	11	39	397	245	206	184	24	24
20	22	7.5	5.5	7.0	10	94	283	279	88	179	37	21
21	22	6.8	6.8	7.0	9.8	126	314	281	251	145	34	22
22	21	7.0	7.4	6.5	10	147	439	215	285	154	25	19
23	21	7.8	8.2	6.1	11	172	400	66	278	171	17	20
24	22	7.7	16	6.5	11	161	435	146	301	141	14	47
25	24	9.3	19	7.2	10	367	363	271	268	44	27	60
26	24	7.2	19	7.9	16	429	365	322	188	47	97	102
27	28	5.9	19	8.2	14	373	351	348	159	112	112	103
28	23	7.1	19	7.0	13	283	405	325	143	186	122	105
29	31	7.2	21	7.4	---	231	563	330	144	359	151	104
30	20	6.5	20	8.3	---	254	675	441	125	363	195	91
31	25	---	20	7.6	---	240	---	358	---	189	166	---
TOTAL	673	300.1	299.0	308.0	331.0	3,204.1	9,268	8,169	6,348	4,083	2,906	3,431
MEAN	21.7	10.0	9.65	9.94	11.8	103	309	264	212	132	93.7	114
MAX	57	17	21	22	26	429	675	562	348	363	198	260
MIN	12	5.9	4.8	6.1	7.3	8.8	118	66	55	16	14	19
AC-FT	1,330	595	593	611	657	6,360	18,380	16,200	12,590	8,100	5,760	6,810
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1996 - 2003, BY WATER YEAR (WY)
MEAN	51.1	43.3	35.1	37.6	45.1	68.8	167	350	373	260	217	70.8
MAX	111	83.5	76.4	73.6	81.7	112	403	932	1,222	550	485	114
(WY)	(1999)	(1998)	(1998)	(1998)	(2001)	(1998)	(1998)	(1998)	(1999)	(1999)	(1999)	(2003)
MIN	20.1	10.0	9.65	9.94	11.8	27.1	23.4	45.0	70.6	22.4	10.8	19.7
(WY)	(2002)	(2003)	(2003)	(2003)	(2003)	(1996)	(2002)	(2002)	(2002)	(2002)	(2002)	(2002)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1996 - 2003
ANNUAL TOTAL	10,452.0	39,320.2
ANNUAL MEAN	28.6	108	151
HIGHEST ANNUAL MEAN			293 1999
LOWEST ANNUAL MEAN			29.3 2002
HIGHEST DAILY MEAN	169 May 24	675 Apr 30	1,940 Jun 18, 1999
LOWEST DAILY MEAN	4.8 Dec 12	4.8 Dec 12	3.3 Apr 24, 1996
ANNUAL SEVEN-DAY MINIMUM	5.3 Dec 9	5.3 Dec 9	5.3 Dec 9, 2002
MAXIMUM PEAK FLOW		809 Jul 29	2,150 May 28, 1999
MAXIMUM PEAK STAGE		13.00 Jul 29	14.19 May 28, 1999
ANNUAL RUNOFF (AC-FT)	20,730	77,990	109,400
10 PERCENT EXCEEDS	65	287	378
50 PERCENT EXCEEDS	19	37	65
90 PERCENT EXCEEDS	7.2	7.2	13