PLATTE RIVER BASIN

402114105350101 BIG THOMPSON RIVER BELOW MORAINE PARK NEAR ESTES PARK, CO

LOCATION.--Lat 40°21'14", long 105°35'01", in SE14SW14 sec.33, T.5 N., R.73 W., Larimer County, Hydrologic Unit 10190006, on left upstream wingwall of bridge at lower Moraine Park parking lot, in Rocky Mountain National Park, and 4.0 mi southwest of Estes Park.

DRAINAGE AREA.--39.8 mi2.

PERIOD OF RECORD.--October 1995 to September 1997, April 2001 to current year. Hydrologic Benchmark Network water-quality site. For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=402114105350101.

GAGE.--Water-stage recorder with satellite telemetry. Elevation of gage is 8,005 ft above NGVD of 1929, from topographic map.

REMARKS.--Records good, except for estimated daily discharges, which are poor. No diversion or regulation upstream from gage. Water-quality data has been collected at this site as part of the South Platte River Basin National Water-Quality Assessment Program and is available at http://waterdata.usgs.gov/co/nwis/inventory/?site_no=402114105350101.

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	12	e9.9	e6.5	e3.7	e2.8	e2.5	e12	32	658	189	57	46
2	14	e9.9	e6.5	e3.5	e2.8	e2.5	e13	27	504	176	56	39
3	17	e9.9	e6.5	e3.4	e2.8	e2.5	e15	25	425	175	54	44
4	15	e9.8	e6.6	e3.3	e2.8	e2.6	e15	29	346	165	63	46
5	16	e9.9	e6.4	e3.2	e2.7	e2.6	e14	27	272	158	57	38
6	15	e9.7	e6.1	e3.2	e2.7	e2.6	e14	24	229	147	51	36
7	14	e9.5	e5.9	e3.2	e2.7	e2.6	e14	23	197	137	48	39
8	17	e9.5	e5.8	e3.1	e2.7	e2.7	e15	24	176	139	48	45
9	17	e9.5	e5.8	e3.1	e2.7	e2.7	e15	25	196	142	49	44
10	16	e9.4	e5.7	e3.1	e2.7	e2.7	e22	26	259	127	45	39
11	15	e9.3	e5.7	e3.1	e2.7	e2.7	e24	27	305	118	49	36
12	13	e9.2	e5.6	e3.0	e2.7	e2.8	25	25	276	117	44	32
13	12	e9.0	e5.7	e3.0	e2.6	e2.8	29	29	279	117	40	30
14	12	e8.9	e5.7	e3.0	e2.6	e2.8	35	33	300	109	41	28
15	11	e8.4	e5.7	e3.0	e2.6	e2.9	35	51	328	110	43	24
16	11	e8.0	e5.5	e3.0	e2.6	e2.9	30	75	301	108	40	22
17	10	e7.8	e5.4	e3.0	e2.6	e3.0	28	122	273	108	55	21
18	10	e7.6	e5.4	e2.9	e2.6	e3.6	27	157	328	108	71	22
19	9.7	e7.5	e5.3	e2.9	e2.6	e4.6	23	135	313	112	67	21
20	9.7	e7.5	e5.3	e2.9	e2.6	e4.8	20	115	279	114	50	19
21	9.1	e7.4	e5.2	e2.9	e2.6	e5.6	20	113	270	101	42	18
22	9.2	e7.4	e5.0	e2.9	e2.6	e5.2	21	141	237	92	38	17
23	9.7	e7.4	e4.9	e2.9	e2.5	e5.2	23	189	235	90	38	15
24	12	e7.4	e4.8	e2.9	e2.5	e5.1	23	244	239	84	42	14
25	11	e7.3	e4.6	e2.8	e2.5	e5.1	24	271	212	84	44	14
26	10	e7.0	e4.4	e2.8	e2.5	e5.1	29	307	165	89	44	12
27	11	e6.8	e4.2	e2.8	e2.5	e5.8	35	370	162	85	38	12
28	10	e6.8	e4.1	e2.8	e2.5	e6.4	38	481	176	75	36	12
29	9.8	e6.8	e4.0	e2.8	---	e7.2	42	589	185	78	37	12
30	e9.9	e6.6	e3.9	e2.8	---	e11	39	663	195	69	56	12
31	e9.9	---	e3.8	e2.8	---	e12	---	630	---	60	66	---
TOTAL	378.0	251.1	166.0	93.8	73.8	132.6	719	5,029	8,320	3,583	1,509	809
MEAN	12.2	8.37	5.35	3.03	2.64	4.28	24.0	162	277	116	48.7	27.0
MAX	17	9.9	6.6	3.7	2.8	12	42	663	658	189	71	46
MIN	9.1	6.6	3.8	2.8	2.5	2.5	12	23	162	60	36	12
AC-FT	750	498	329	186	146	263	1,430	9,980	16,500	7,110	2,990	1,600
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1996 - 2003, BY WATER YEAR (WY)
MEAN	14.9	9.60	5.76	3.58	3.36	4.31	16.2	127	243	95.3	55.1	30.0
MAX	20.9	12.1	6.82	4.68	4.36	6.51	24.0	162	399	133	111	61.8
(WY)	(1997)	(1997)	(1997)	(1997)	(1996)	(1997)	(2003)	(2003)	(1997)	(1997)	(1997)	(1997)
MIN	11.8	8.31	4.21	2.56	2.46	2.26	8.06	53.2	95.8	37.9	18.8	12.6
(WY)	(2002)	(2002)	(2002)	(2002)	(2002)	(2002)	(2002)	(2002)	(2002)	(2002)	(2002)	(2002)

SUMMARY STATISTICS	FOR 2002 CALENDAR YEAR	FOR 2003 WATER YEAR	WATER YEARS 1996 - 2003
ANNUAL TOTAL	7,914.3	21,064.3
ANNUAL MEAN	21.7	57.7	53.4
HIGHEST ANNUAL MEAN			77.0 1997
LOWEST ANNUAL MEAN			21.5 2002
HIGHEST DAILY MEAN	197 May 31	663 May 30	663 May 30, 2003
LOWEST DAILY MEAN	e2.0 Mar 3	e2.5 Feb 23	e2.0 Mar 3, 2002
ANNUAL SEVEN-DAY MINIMUM	e2.1 Mar 2	e2.5 Feb 23	e2.1 Mar 2, 2002
MAXIMUM PEAK FLOW		828 May 31	828 May 31, 2003
MAXIMUM PEAK STAGE		6.86 May 31	6.86 May 31, 2003
ANNUAL RUNOFF (AC-FT)	15,700	41,780	38,700
10 PERCENT EXCEEDS	59	180	161
50 PERCENT EXCEEDS	9.9	14	13
90 PERCENT EXCEEDS	2.3	2.8	2.9

e Estimated.