ELCO WCPlan2007

• Project Type: Water Conservation Plan
• Contract/PO #: OE PDA 07-60
• Applicant: East Larimer County Water District
• Project Name: East Larimer County Water District Water Conservation Plan
• Title: East Larimer County Water District Water Conservation Plan
• Date: 6/1/2007
• County: Larimer
• Water Conservation - Doc Type: Complete Plan

the region as a whole. That means the quota is lower in wet years because native
supplies are plentiful and local reservoirs are full, so less C-BT water is required to
satisfy the water demands of the entire region. It is the wet-year quota that presents the
greatest challenge to potable water suppliers like ELCO that are dependent on the C-BT
Project for their water supply.

In the fifty years the C-BT Project has operated (1957 - 2006), the average yield has
been 0.74 acre feet per unit. The yield has never been less than 0.50 acre feet per unit
(50010 quota) or more than 1.0 acre feet per unit (100010 quota). The annual quota
established by the NCWCD Board over the years is shown in Figure 3.6.

Figure 3.6 - C-BT Quota Graph

C-BT Quota (1957-2006)

1000/0
as 800/0
.pi
0
~ 600/0
"
ca 400/0
~
c:
c:
<C 200/0
00/0

- - - r n" . - - - - [ .....1 r.... - - ;: r I...... - - - - ------- - .
~....... 0'
.... ..... ~.........
- r~ ~. ~~-- . ......,.0 ~. . . . ~ . . [
~... ..........
~ ~. . ~~
- ~ ....- "' -.....-.......~
- - - - - - - - - - - - ~ - - - -
- - - - - - - - -
- . . . . . . . .
I I I I I I I I I I I I I I I I I I I I I I I I I I I I

~~~~#~#~~~~~~~~~~

I II Annual Quota

~ Seven Y ear Average Quota

In general, a 50010 quota is declared in a wet year. However, in 2003, a 50010 quota was
the highest quota that could be declared because the amount of water stored in the C-
BT system was at an all time low. In fact, at the end of 2002, a 30010 quota was
anticipated by NCWCD and would have been declared had it not been for an epic
snowstorm in March 2003. That snowstorm left three feet of heavy, wet snow across
northern Colorado with higher amounts in the western foothills. Some parts of the
foothills saw between five and seven feet of snow.

The C-BT Project was initiated and supported by agricultural interests. In the 1930's,
when the project was first proposed, there was little else in the way of commerce in
northern Colorado. In 1957, 85010 of the C-BT units were owned by individual farmers
and mutual ditch companies. By the end of 2005, only 35010 of the C-BT units were
owned by individuals and mutual ditch companies.

Clear Water Solutions, Inc.
East Larimer County Water District

2007 Water Conservation Plan

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