DWR_2669029

• Title: STREAM FLOW DATA FOR COLORADO
• Year: 1992
• Document Type - Publications and Reports: Streamflow Report

29

PLATTE RIVER BASIN

06735500 BIG THOMPSON RIVER NEAR ESTES PARK, CO

LOCATION.--Lat 40°22'35", long 105°29'06", in NE¼NE¼ sec.29, T.S N., R.72 W., Larimer County, Hydrologic Unit 10190006, on
right bank 100 ft upstream from Dry Gulch, 600 ft downstream from Olympus Dam, and 2.0 mi east of Estes Park.

DRAINAGE AREA.--155 mi2. Area at site used Jan. 29, 1934, to Mar. 21, 1951, 162 mi2.

GAGE.--Water-stage recorder with satellite telemetry at 15' Parshall flume. Datum of gage is 7,422.5 ft above National
Geodetic Vertical Datum of 1929 (levels by U.S. Bureau of Reclamation). Prior to Jan. 29, 1934, non-recording
gage on highway bridge 1.5 mi downstream at different datum. Jan. 29, 1934, to Mar. 21, 1951, water-stage
recorder at site 0.4 mi downstream at datum 10.5 ft, lower.

REMARKS.--Record is complete and reliable. Graphic chart record was used on the following days: Oct. 6-30; Nov 3, 23,
1991; Jan. 4, 6-17, 19; Apr. 29-30; May 2-6, 8-18; Sep. 18-20, 1992. Low flow regulated by Lake Estes since Nov.
30, 1948. Diversion from Colorado River basin to Big Thompson River basin upstream from station through Alva B.
Adams tunnel began Aug. 10. 1947; since Apr, 15, 1953, this imported water has been diverted from Lake Estes
through Olympus tunnel bypassing this station. Since May 17, 1955, part of the natural flow of Big Thompson River
has also been diverted through Olympus tunnel and returned to the river downstream from the station at mouth of
canyon, near Drake. Station maintained and records developed by Jim Clark and Fred Renner. Record is good.

RATING TABLE.--BTBLESCO09 USED FROM 01-OCT-1991 TO 30-SEP-1992

DISCHARGE, IN CFS, WATER YEAR OCTOBER 1991 TO SEPTEMBER 1992
MEAN VALUES

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP

1 50 26 23 19 19 21 26 104 126 127 121 35
2 44 26 23 19 19 20 26 105 126 125 120 69
3 36 25 24 18 19 21 26 105 126 126 113 70
4 35 26 27 20 19 21 27 106 127 126 112 64
5 43 26 28 19 19 20 26 105 128 127 112 69
6 41 19 29 19 19 20 26 105 126 127 113 62
7 28 25 28 19 19 20 26 60 126 127 107 73
8 50 24 29 20 19 20 27 105 126 126 101 55
9 49 19 29 20 19 20 26 104 126 127 98 61
10 39 25 29 19 19 21 27 105 126 127 98 50
11 46 25 28 18 20 20 27 105 126 127 112 53
12 47 25 28 20 19 20 28 105 126 126 122 66
13 60 25 28 20 19 21 27 101 126 127 116 54
14 60 25 28 20 20 22 27 105 127 126 114 50
15 57 24 29 20 20 21 26 109 125 126 95 48
16 60 25 29 20 20 22 50 129 126 128 89 39
17 58 24 28 20 20 24 53 130 126 126 90 41
18 43 25 28 19 20 27 53 130 126 126 97 42
19 47 26 29 20 20 27 53 130 127 125 98 44
20 58 25 29 19 20 26 53 131 127 125 80 44
21 46 24 28 19 20 27 53 130 127 124 80 46
22 44 24 29 19 20 27 53 131 126 123 69 46
23 47 23 28 18 20 27 53 130 126 124 91 43
24 47 20 29 19 20 26 54 130 125 123 85 43
25 50 24 28 20 21 27 53 131 127 123 99 40
26 55 24 29 20 20 26 47 130 126 123 100 40
27 51 25 29 20 21 27 53 132 126 121 99 39
28 31 25 29 20 20 27 53 131 127 122 97 37
29 32 24 29 20 20 27 53 130 126 121 80 35
30 27 23 23 19 --- 27 52 126 127 120 62 35
31 18 --- 19 19 --- 27 --- 126 --- 121 54 ---

TOTAL 1399 726 853 601 570 729 1184 3606 3788 3872 3024 1493
MEAN 45.1 24.2 27.5 19.4 19.7 23.5 39.5 116 126 125 97.5 49.8
AC-FT 2770 1440 1690 1190 1130 1450 2350 7150 7510 7680 6000 2960
MAX 60 26 29 20 21 27 54 132 128 128 122 73
MIN 18 19 19 18 19 20 26 60 125 120 54 35

CAL YR 1991 TOTAL 21239.5 MEAN 58.2 MAX 550 MIN 8.3 AC-FT 42130
WTR YR 1992 TOTAL 21845 MEAN 59.7 MAX 132 MIN 18 AC-FT 43330

MAX DISCH 164 CFS AT 1315 18-JUN-1992 GH 1.92 FT. SHIFT 0.00 FT. MAX GH 1.92 FT. AT 1315
18-JUN-1992