DWR_2668988

• Title: STREAM FLOW DATA FOR COLORADO
• Year: 2003
• Document Type - Publications and Reports: Streamflow Report

PLATTE RIVER BASIN

DILLE TUNNEL (EAST PORTAL) NEAR DRAKE, CO

LOCATION.--Lat 40°25'10", long 105°14'45", NW¼NW¼ sec. 9, T.5 N., R.70 W., Larimer County. Diverts water
from Big Thompson River and Transmountain diversions from Colorado River basin to Hansen Feeder
Canal.

GAGE.--A-35 Stevens graphic recorder and 8004 Data Collection Platform (DCP) in a concrete shelter and well.
The station is maintained by Northern Colorado Water Conservancy District personnel.

REMARKS.--The primary record is hourly DCP data with chart back-up. Chart record is checked daily when tunnel
is in operation by Northern Colorado Water Conservancy District personnel. The record is complete and
reliable. Record is good. The tunnel is used to divert water for power generation at the canyon
mouth. Flow at station is intermittent dependent on river flows, water orders, and other regulations.
Station maintained and record developed by Merlin Friedrichsen.

RATING TABLE.--DILTUNCO03 USED FROM 01-OCT-2002 TO 30-SEP-2003

DISCHARGE, IN CFS, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
MEAN VALUES

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

1 0 0 0 0 0 0 0 90 .01 91 91 37
2 0 0 0 0 0 0 0 100 .01 87 91 51
3 0 0 0 0 0 0 0 99 0 103 86 50
4 0 0 0 0 0 0 0 34 75 109 82 48
5 0 0 0 0 0 0 0 .17 29 109 82 47
6 0 0 0 0 0 0 0 .11 .06 109 82 46
7 0 0 0 0 0 0 0 .11 .06 109 82 47
8 0 0 0 0 0 0 0 .09 22 106 80 46
9 0 0 0 0 0 0 0 .06 65 105 80 44
10 0 0 0 0 0 0 0 .06 77 109 80 44
11 0 0 0 0 0 0 0 .06 29 107 79 44
12 0 0 0 0 0 0 0 .06 58 106 79 44
13 0 0 0 0 0 0 0 1.2 21 103 79 44
14 0 0 0 0 0 0 0 79 .26 101 77 43
15 0 0 0 0 0 0 0 110 .24 102 74 43
16 0 0 0 0 0 0 0 124 .18 102 61 21
17 0 0 0 0 0 0 0 146 .09 102 23 14
18 0 0 0 0 0 0 0 163 .03 97 11 15
19 0 0 0 0 0 0 0 124 .03 95 37 15
20 0 0 0 0 0 0 0 140 .03 95 82 14
21 0 0 0 0 0 0 .08 151 .03 47 59 14
22 0 0 0 0 0 0 .11 152 .03 30 46 9
23 0 0 0 0 0 0 .09 151 .03 30 44 6.6
24 0 0 0 0 0 0 .06 118 .03 30 42 6.6
25 0 0 0 0 0 0 .06 34 .03 69 42 6.5
26 0 0 0 0 0 0 .06 7.2 .03 78 42 2.1
27 0 0 0 0 0 0 .06 6.1 54 83 42 0
28 0 0 0 0 0 0 .06 45 85 92 42 0
29 0 0 0 0 --- 0 35 16 98 54 39 0
30 0 0 0 0 --- 0 60 201 101 66 37 0
31 0 --- 0 0 --- 0 --- 72 --- 89 37 ---

TOTAL 0 0 0 0 0 0 95.58 2164.22 715.18 2715 1910 801.8
MEAN 0 0 0 0 0 0 3.19 69.8 23.8 88 62 26.7
AC-FT 0 0 0 0 0 0 190 4290 1420 5390 3790 1590
MAX 0 0 0 0 0 0 60 201 101 109 91 51
MIN 0 0 0 0 0 0 0 .06 0 30 11 0

WTR YR 2003 TOTAL 8401.78 MEAN 23 MAX 201 MIN 0 AC-FT 16660

MAX DISCH: 281 CFS AT 07:00 ON May. 30, 2003 GH 3.87 FT. SHIFT 0 FT.
MAX GH: 3.87 FT. AT 07:00 ON May. 30, 2003

FOR MORE COMPLETE OR DETAILED INFORMATION SEE DAILY OR MONTHLY RECORD.

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