ARKANSAS RIVER BASIN

07103780 MONUMENT CREEK ABOVE NORTH GATE BOULEVARD AT U.S. AIR FORCE ACADEMY, CO

LOCATION.--Lat 39°01'52", long 104°50'52", in SW14SW14 sec.1, T.12 S., R.67 W., El Paso County, Hydrologic Unit 11020003, on U.S. Air Force Academy, on right bank 50 ft upstream from Denver and Rio Grande Western Railroad bridge, 0.8 mi upstream from North Gate Boulevard, and 1.5 mi downstream from Beaver Creek.

DRAINAGE AREA.--81.7 mi2.

WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--April 1985 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=07103780

GAGE.--Water-stage recorder with satellite telemetry. Elevation of gage is 6,640 ft above NGVD of 1929, from topographic map.

REMARKS.--Records fair except for estimated daily discharges, which are poor. Natural flow of stream affected by storage reservoirs, diversions for irrigation and municipal use, ground-water withdrawals, return flows from irrigated areas, and flows from sewage-treatment plants.

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	2.5	3.7	2.8	e2.8	3.4	e3.0	13	33	9.6	5.6	2.5	3.1
2	3.1	3.9	2.9	e3.3	e3.2	3.1	12	34	8.6	4.4	2.2	3.4
3	3.5	3.9	2.7	3.1	e3.1	3.2	10	32	7.4	4.4	2.4	4.4
4	3.1	3.8	2.7	3.5	e3.0	3.0	10	30	5.9	4.0	2.5	4.3
5	3.1	3.5	e2.8	2.9	e2.8	e2.8	7.9	26	10	3.6	2.3	3.2
6	3.1	3.2	e3.0	2.9	e2.6	e2.9	8.2	21	9.8	3.5	1.8	3.5
7	3.1	3.2	e2.8	2.8	e2.5	3.0	9.5	21	9.8	3.4	1.0	5.8
8	2.2	3.2	e2.7	2.9	e2.4	2.7	13	21	8.8	3.1	1.4	4.8
9	1.9	3.3	e2.8	e2.7	e2.6	2.7	13	17	6.2	2.8	1.2	3.6
10	2.1	3.5	e2.8	e2.6	e2.8	2.8	10	19	5.5	2.9	1.2	2.8
11	2.2	3.7	e2.8	e2.6	e3.0	2.6	6.2	17	7.1	3.1	1.3	2.5
12	2.4	3.3	e2.8	e2.8	e3.1	2.5	6.7	17	7.5	e2.4	1.8	2.4
13	2.7	3.3	e3.0	2.9	3.2	2.6	11	16	7.9	e2.2	1.6	2.9
14	2.4	3.7	e2.6	2.7	3.5	2.5	18	15	4.8	e2.1	1.7	2.9
15	2.3	3.5	e2.6	e2.8	3.2	2.7	22	17	4.4	e2.1	1.9	3.0
16	2.6	3.2	e2.6	e2.6	3.0	2.8	25	16	5.0	e2.0	1.6	2.7
17	3.2	3.1	e2.6	e2.5	2.9	3.0	22	14	14	e2.0	1.7	2.5
18	3.1	3.0	e2.6	e2.5	2.9	3.5	18	14	25	e2.0	2.7	2.6
19	3.2	2.6	e2.5	e2.8	2.8	e2.5	20	15	20	e2.1	2.4	4.1
20	3.2	2.5	e2.4	2.9	2.7	5.2	20	14	25	e2.3	1.5	2.4
21	3.0	2.6	e2.5	e2.8	3.1	5.5	18	12	13	2.4	1.1	2.3
22	3.2	2.5	e2.6	e2.7	2.8	5.2	13	11	8.6	2.8	1.3	2.5
23	3.3	2.7	e2.5	e2.7	e2.8	6.3	20	11	8.5	2.7	1.1	2.4
24	3.5	2.8	e2.5	3.1	e2.6	6.9	35	9.0	7.8	2.7	0.96	1.8
25	3.1	2.8	e2.5	e2.7	e2.7	6.4	31	8.6	7.5	2.8	1.2	1.7
26	3.6	e2.7	e2.5	e2.8	2.8	9.3	19	8.3	11	2.5	1.3	1.7
27	4.5	e2.6	e2.7	2.9	2.9	11	7.9	8.0	8.1	2.9	1.7	1.7
28	3.8	e2.7	e3.0	2.8	e2.8	7.4	32	6.5	8.0	2.6	1.7	2.0
29	3.5	e2.7	e3.0	3.2	---	5.2	46	6.6	13	2.6	1.9	2.3
30	3.2	2.7	e2.9	3.3	---	4.6	33	16	7.3	2.2	3.4	2.8
31	3.6	---	e3.0	3.7	---	5.8	---	12	---	2.2	13	---
TOTAL	93.3	93.9	84.2	89.3	81.2	132.7	530.4	518.0	295.1	88.4	65.36	88.1
MEAN	3.01	3.13	2.72	2.88	2.90	4.28	17.7	16.7	9.84	2.85	2.11	2.94
MAX	4.5	3.9	3.0	3.7	3.5	11	46	34	25	5.6	13	5.8
MIN	1.9	2.5	2.4	2.5	2.4	2.5	6.2	6.5	4.4	2.0	0.96	1.7
AC-FT	185	186	167	177	161	263	1,050	1,030	585	175	130	175
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1985 - 2003, BY WATER YEAR (WY)
MEAN	5.20	6.10	5.24	4.94	5.24	8.45	26.3	47.3	22.6	8.77	8.14	5.10
MAX	11.4	13.0	9.91	10.1	10.8	21.1	75.5	210	77.8	30.6	36.7	15.7
(WY)	(2000)	(1998)	(2000)	(2000)	(2000)	(1998)	(1999)	(1999)	(1999)	(1995)	(1999)	(1997)
MIN	0.95	1.63	1.54	1.08	1.81	2.38	5.67	5.23	2.74	1.04	0.90	1.16
(WY)	(1990)	(1990)	(1990)	(1990)	(1990)	(1991)	(2002)	(2002)	(2002)	(1989)	(1989)	(1989)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1985 - 2003
ANNUAL TOTAL	1,237.0	2,159.96
ANNUAL MEAN	3.39	5.92	12.4
HIGHEST ANNUAL MEAN			39.6 1999
LOWEST ANNUAL MEAN			3.58 2002
HIGHEST DAILY MEAN	10 Apr 21	46 Apr 29	1,250 Apr 30, 1999
LOWEST DAILY MEAN	1.2 Aug 17	0.96 Aug 24	0.58 Oct 15, 1989
ANNUAL SEVEN-DAY MINIMUM	1.4 Aug 6	1.2 Aug 20	0.69 Aug 26, 1989
MAXIMUM PEAK FLOW		a130 Jun 18	b1,790 Apr 30, 1999
MAXIMUM PEAK STAGE		7.84 Jun 18	c9.01 Apr 30, 1999
ANNUAL RUNOFF (AC-FT)	2,450	4,280	8,970
10 PERCENT EXCEEDS	5.2	14	26
50 PERCENT EXCEEDS	3.1	3.0	5.6
90 PERCENT EXCEEDS	1.8	2.2	2.0

e Estimated. a From rating curve extended above 54 ft3/s on basis of slope-area measurement of peak flow. b From slope-area measurement of peak flow. c From floodmarks.