DWR_2669029

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

33

PLATTE RIVER BASIN

06738000 BIG THOMPSON RIVER AT MOUTH OF CANYON, NEAR DRAKE, CO

LOCATION.--Lat 40°25'18", long 105°13'34", in SW¼SW¼ sec.3, T,5 N., R.70 W., Larimer County, Hydrologic Unit 10190006, on
right bank at mouth of canyon, 400 ft upstream from Handy Ditch diversion dam, and 6.0 mi east of Drake.

DRAINAGE AREA.--305 mi2.

GAGE.--Water-stage recorder with satellite telemetry. Datum of gage is 5,305.47 ft above National Geodetic Vertical Datum
of 1929 (levels by U.S. Bureau of Reclamation). Oct. 1, 1949, to Sept. 18, 1977, at present site, datum 8.00 ft
lower, Sept. 19, 1977, to July 27, 1980, at present site, datum 1.37 ft, lower. See WSP 1710 or 1730 for history
of changes prior to Oct. 1, 1949.

REMARKS.--Record is complete and reliable except for the following periods: Dec. 9-31, 1991; Jan. 1-31, Feb. 1-29, Mar.
1-2, 1992 when station was closed for winter. Stage-discharge relation affected by ice Dec. 2-9, 1991. Graphic
chart record was used Oct. 27, 1991; Apr. 5, 1992. DCP used whenever possible. Record good, except for periods
of no gage-height record and ice affect, which is fair. Diversions 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. Part of the
natural flow of the Big Thompson River has also been diverted through Olympus Tunnel since May 17, 1955, and
Dille Tunnel since Apr, 20, 1959, and returned to the river just downstream from this station. Station
maintained and records developed by James Clark and Fred Renner.

RATING TABLE.--BTCANYCO14 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 52 37 22 28 26 27 48 83 104 146 93 51
2 49 35 23 28 26 28 49 73 95 126 98 79
3 45 41 29 27 26 33 48 56 77 104 92 90
4 55 55 53 29 26 45 51 55 75 93 86 86
5 62 60 60 28 26 43 49 55 79 91 90 87
6 63 49 59 28 26 39 56 55 76 93 84 85
7 60 41 43 28 26 36 50 63 74 94 81 86
8 67 43 45 29 26 39 54 59 75 111 75 79
9 72 42 42 29 26 38 53 56 64 107 71 73
10 67 43 42 28 26 36 56 64 63 103 71 70
11 63 42 40 27 26 37 61 78 69 110 78 66
12 65 39 40 29 25 44 61 72 71 113 84 72
13 60 39 40 29 25 45 64 66 62 107 82 70
14 56 39 40 29 26 45 64 124 74 100 78 65
15 54 39 40 29 26 44 70 142 181 99 76 62
16 53 38 40 29 26 44 99 200 105 98 78 60
17 52 37 39 28 26 43 98 188 69 91 85 56
18 43 39 38 27 26 47 83 109 66 83 87 55
19 36 40 39 28 26 44 77 70 65 82 93 58
20 38 34 39 27 26 42 71 78 111 88 92 59
21 38 41 38 27 26 42 61 152 169 80 64 57
22 37 32 38 27 26 41 53 184 117 83 56 57
23 37 20 39 26 26 42 49 195 88 80 65 54
24 37 30 38 27 26 41 88 207 99 85 79 52
25 38 46 38 28 27 38 104 218 111 91 132 51
26 40 48 37 28 26 39 97 209 161 91 147 50
27 42 41 38 28 27 39 96 214 222 84 80 49
28 52 38 38 28 27 50 102 166 202 82 105 48
29 44 33 38 28 27 51 60 151 183 88 104 47
30 37 26 33 26 --- 50 57 113 172 89 89 46
31 30 --- 29 26 --- 51 --- 107 --- 92 83 ---

TOTAL 1544 1187 1217 863 756 1283 2029 3662 3179 2984 2678 1920
MEAN 49.8 39.6 39.3 27.8 26.1 41.4 67.6 118 106 96.3 86.4 64.0
AC-FT 3060 2350 2410 1710 1500 2540 4020 7260 6310 5920 5310 3810
MAX 72 60 60 29 27 51 104 218 222 146 147 90
MIN 30 20 22 26 25 27 48 55 62 80 56 46

CAL YR 1991 TOTAL 24543 MEAN 67.2 MAX 765 MIN 14 AC-FT 48680
WTR YR 1992 TOTAL 23302 MEAN 63.7 MAX 222 MIN 20 AC-FT 46220

MAX DISCH 386 CFS AT 1000 16-MAY-1992 GH 3.12 FT. SHIFT 0.04 FT. MAX GH 3.12 FT. AT 1000
16-MAY-1992