WSP10444

• File Number: 8441.400
• Description: Colorado Big Thompson Project - Reports
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 8/1/1986
• Author: Colo. Water Resource
• Title: Summary Report - Preliminary Hydrologic Analysis
• Water Supply Pro - Doc Type: Report/Study

,,:,,;
.."/,

Ii

. ,

I,
:.1

Ii
f>

I

:'j

I;;j
J.:
tt:~
;-t:!
ljl

,l,

'[

:;;

~. -~
i"
J,

<<-,

r

.~..;

J

:1

"\

'I
>1'

I

I
. ,

I

I

o
o
'e->
~Azure site - This site is located en the Colorado. River at the
;l.:>.upper end of the Lower Gere Canyon, abeut 10 miles downstream from
Kremmling. The average. annual historical flew at. this. site is
742,000 af.

Wo.lcett sit~ -. This site is located 1 mile north of the town of
WOlcott on Alkali Creek, a .miner tributary toth,e Eagle River. Two
alternatives were analyzed. The first involves pumping from the
Eagle River and-the Colerado River. The other alternative provides
. a smaller reservoir capaoity with pumping' from the Eagle River
Only. The" average annual histerical flow is 800 .,afforAlkali
Cr$ek at. the reservoir site; 277,000 af at the Eagle River
div,ersion site: and 796,000 af at the Colorado. River diversion
site.

Una site This site is on the Colorado River at the Mesa
Garfield county line between the towns of paraohute and DeBeque. It
is downstream from the Shoshone power plant diversio.n but lies
upstream frem the Grand Valley diversiens. Because of its
geegraphic location, the Una site alone weuld not substitute fer
the. functions of the Green Mountain Reservoir as specified in
SenateOecument 80 and the Consolidated cases. However, the.
reserveir has merits in providing the largest water yield and
hydreelectric power production. An evaluation waS made of its
capability to replace the Greert Mountain Reservoir when combined
with one Of the upstream reservoirs mentioned above. The average
annual hist.orical flow at this. site is 2, 59? , 000 af.

Combination Res~rv,oirs - with the exception of Wolcott Reservoir,
the single reservoirs can not meet the. requirements of a
replacement reservoir for the Green Mountain EXChange Project due
to their limited yield or geographical location. Several
al ternatives were considered using a oombinatien of two reservoirs.
to meet the proj.ect objectives. Among them are the fOllewing
combinatiens: .

3-3