PLATTE RIVER BASIN

394839104570300 SAND CREEK AT MOUTH NEAR COMMERCE CITY, CO

LOCATION.--Lat 39°48'36", long 104°57'00", in SE14NW14NW14 sec.12, T.3 S., R.68 W., Adams County, Hydrologic Unit 10190003, on left bank 800 ft upstream from mouth and 50 ft upstream from confluence of Burlington Ditch and Sand Creek in northeast corner of Metro Wastewater Plant.

DRAINAGE AREA.--184 mi2 (revised).

PERIOD OF RECORD.--January 1992 to current year. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=394839104570300

GAGE.--Water-stage recorder with satellite telemetry. Elevation of gage is 5,120 ft above NGVD of 1929, from topographic map. Prior to Mar 1, 2000, at site 400 ft downstream at different datum. Supplementary recorder on Burlington Ditch return flows, 50 ft downstream from gage.

REMARKS.--Records poor. Records include return flows from Burlington ditch. 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	45	16	13	12	12	e89	48	e38	e179	e137	e102	102
2	99	15	13	12	13	e91	37	27	e200	e123	e97	42
3	44	23	14	12	24	e88	30	24	e113	e127	e80	152
4	24	19	13	12	18	e76	37	21	e94	e129	e102	27
5	17	14	12	12	14	e75	29	21	e106	e126	e99	15
6	16	15	12	12	14	e85	51	20	e46	e126	e94	15
7	15	14	13	12	12	e71	32	21	e210	e129	e94	20
8	15	e24	13	11	12	e70	29	20	e38	e123	e107	17
9	14	e13	13	12	11	e66	26	e68	19	e90	e95	12
10	15	13	12	12	12	e67	23	e441	e57	e104	e80	10
11	15	13	12	11	12	e57	22	e200	e16	e87	e52	10
12	15	13	13	12	12	34	22	e136	13	e62	e64	9.4
13	16	13	13	70	12	26	22	e59	14	e65	e13	9.5
14	17	13	13	73	12	13	92	e71	e26	e52	e9.3	9.5
15	16	13	13	13	31	14	89	e35	17	e94	e41	9.8
16	16	14	13	12	39	16	166	e52	16	e116	e56	10
17	17	14	13	12	12	67	94	e62	e66	e117	e31	13
18	17	14	13	12	12	168	24	e127	e203	e126	e106	9.3
19	16	14	12	12	12	58	92	e135	e80	e385	e123	11
20	17	14	12	12	12	149	40	e43	e55	e170	e49	10
21	17	14	12	12	12	322	36	e29	e38	e139	e41	9.9
22	18	14	12	12	12	410	27	e20	e26	e129	e46	9.5
23	17	14	12	12	13	375	331	19	16	e114	e55	8.6
24	16	14	12	11	e13	212	612	18	14	e114	e60	8.5
25	15	15	e12	12	e11	146	110	e30	14	e82	e63	8.4
26	15	15	e12	12	e21	155	57	e49	14	e66	e108	9.1
27	24	14	e12	11	28	159	44	19	13	e126	e144	11
28	17	14	11	12	50	77	33	17	13	e117	147	9.2
29	92	14	12	11	---	53	e41	e28	e91	e109	160	9.4
30	51	13	12	12	---	41	e74	e157	e138	e112	353	8.8
31	21	---	12	12	---	e45	---	e189	---	e102	377	---
TOTAL	769	442	386	487	468	3,375	2,370	2,196	1,945	3,698	3,048.3	605.9
MEAN	24.8	14.7	12.5	15.7	16.7	109	79.0	70.8	64.8	119	98.3	20.2
MAX	99	24	14	73	50	410	612	441	210	385	377	152
MIN	14	13	11	11	11	13	22	17	13	52	9.3	8.4
AC-FT	1,530	877	766	966	928	6,690	4,700	4,360	3,860	7,330	6,050	1,200
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1992 - 2003, BY WATER YEAR (WY)
MEAN	36.8	24.8	19.6	17.6	28.1	44.8	60.9	79.6	77.2	110	102	58.9
MAX	107	49.0	35.5	27.7	102	124	168	150	137	260	204	162
(WY)	(1998)	(1998)	(1998)	(1997)	(1997)	(1997)	(1999)	(2001)	(1995)	(1997)	(1997)	(1997)
MIN	17.8	14.7	12.5	12.9	14.6	13.6	25.2	46.1	33.9	32.0	30.9	16.9
(WY)	(1993)	(2003)	(2003)	(1995)	(1995)	(1995)	(1996)	(1993)	(1996)	(2002)	(2002)	(1992)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1992 - 2003
ANNUAL TOTAL	11,995	19,790.2
ANNUAL MEAN	32.9	54.2	55.9
HIGHEST ANNUAL MEAN			99.9 1997
LOWEST ANNUAL MEAN			34.8 2002
HIGHEST DAILY MEAN	275 May 24	612 Apr 24	1,100 Jul 29, 1997
LOWEST DAILY MEAN	11 Aug 1	8.4 Sep 25	4.0 Jul 4, 1996
ANNUAL SEVEN-DAY MINIMUM	12 Dec 22	9.1 Sep 20	7.2 Jun 28, 1996
MAXIMUM PEAK FLOW		1,190 Jul 19	a5,750 Jul 29, 1997
MAXIMUM PEAK STAGE		5.66 Jul 19	b12.12 Jul 29, 1997
ANNUAL RUNOFF (AC-FT)	23,790	39,250	40,480
10 PERCENT EXCEEDS	69	128	124
50 PERCENT EXCEEDS	21	20	30
90 PERCENT EXCEEDS	13	12	13

e Estimated. a From rating curve extended above 500 ft3/s. b Maximum gage height, 13.18 ft, Jul 31, 1999, backwater from construction, site and datum then in use.