DWR_2668978

• Title: STREAM FLOW DATA FOR COLORADO
• Year: 2002
• Document Type - Publications and Reports: Streamflow Report

35

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.--Graphic water-stage recorder in concrete shelter at 8' Parshall flume.

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-2001 TO 30-SEP-2002

DISCHARGE, IN CFS, WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002
MEAN VALUES

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

1 11 0 0 0 0 0 0 0 252 73 5.4 0
2 25 0 0 0 0 0 0 0 282 63 1.4 0
3 60 0 0 0 0 0 0 0 274 60 0 0
4 86 0 0 0 0 0 0 0 278 60 0 0
5 25 21 0 0 0 0 0 0 163 60 0 0
6 0 30 0 0 0 0 0 0 70 56 0 0
7 0 8.3 0 0 0 0 0 3.2 82 62 14 0
8 0 0 0 0 0 0 0 0 91 65 20 0
9 0 13 0 0 0 0 0 0 90 62 20 0
10 0 25 0 0 0 0 0 13 218 60 23 0
11 0 25 0 0 0 0 0 20 261 60 17 0
12 0 25 0 0 0 0 0 6 233 63 3.8 0
13 0 25 0 0 0 0 0 14 192 65 0 18
14 0 25 0 0 0 0 0 20 168 47 0 36
15 0 25 0 0 0 0 0 20 172 15 0 35
16 0 6.7 0 0 0 0 0 20 156 18 0 35
17 0 0 0 0 0 0 0 27 142 25 0 35
18 0 0 0 0 0 0 0 7.9 139 18 0 35
19 0 0 0 0 0 0 0 0 99 15 0 34
20 0 0 0 0 0 0 0 8.2 83 15 0 34
21 0 0 0 0 0 0 0 18 87 15 0 34
22 0 0 0 0 0 0 0 20 88 15 0 33
23 0 0 0 0 0 0 0 20 86 7.4 0 79
24 0 0 0 0 0 0 0 5.2 86 4.8 0 136
25 0 0 0 0 0 0 0 0 86 5.8 0 108
26 0 0 0 0 0 0 0 0 81 5 0 28
27 0 0 0 0 0 0 0 0 80 5.4 0 0
28 0 0 0 0 0 0 0 0 77 5.6 0 0
29 0 0 0 0 --- 0 0 0 76 5.4 0 0
30 0 0 0 0 --- 0 0 10 76 5.3 0 0
31 0 --- 0 0 --- 0 --- 144 --- 5.2 0 ---

TOTAL 207 229 0 0 0 0 0 376.5 4268 1041.9 104.6 680
MEAN 6.68 7.63 0 0 0 0 0 12.1 142 33.6 3.37 22.7
AC-FT 411 454 0 0 0 0 0 747 8470 2070 207 1350
MAX 86 30 0 0 0 0 0 144 282 73 23 136
MIN 0 0 0 0 0 0 0 0 70 4.8 0 0

WTR YR 2002 TOTAL 6907 MEAN 18.9 MAX 282 MIN 0 AC-FT 13700

MAX DISCH: 287 CFS AT 23:45 ON Jun. 2, 2002 GH 3.92 FT. SHIFT 0 FT.
MAX GH: 3.92 FT. AT 23:45 ON Jun. 2, 2002

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

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