Erie WC Plan2008

• Project Type: Water Conservation Plan
• Applicant: Town of Erie
• Project Name: Town of Erie Water Conservation Plan
• Title: Erie Water Conservation Plan
• Date: 1/1/2008
• County: Boulder
• Water Conservation - Doc Type: Complete Plan

CDNI

Section 2
Profile of Existing Water System

regulations (Regulation 84). The disadvantages of using ditch water are that it is
significantly impacted by hydrology variability and is delivered via gravity (rather
than a pressurized delivery system).

Erie is currently using raw ditch water to irrigate parks and open space in the new
Erie Commons development. The amount of non-potable water used to irrigate the
Erie Commons development will increase as additional landscaping and recreational
facilities are developed. Non-potable water is also used to irrigate the Vista Ridge
Golf Course. This non-potable water supply currently consists of Erie Windy Gap
return flows (see Section 2.6), Coal Creek raw water, leased Marshall Lake shares, and
leased treated effluent return flows from Superior and Louisville. Non-potable water
will continue to be used to irrigate the Vista Ridge Golf Course; however, the source
of these non-potable supplies will likely change as lease agreements terminate.

2.3 System Limitations

Erie is located in the northern area identified by the Statewide Water Supply Initiative
(SWSI), which comprises the northwest portion of the South Platte River Basin. SWSI
indicates that the northern area of the South Platte River Basin will need an additional
18,400 AFY of water to meet 2030 demands. A variety of regional supply projects are
currently undergoing environmental review.

In order to meet its growing needs, Erie is anticipating the acquisition of additional
water rights and is actively involved in the Windy Gap Firming Project and Northern
Integrated Water Supply Plan (NISP) regional water supply projects. Table 2-4 briefly
summarizes the conditions of Erie's water supply system.

Table 2.4 Water System Profile

Planning Questions I Yes I No I Comment
Is the system in a designated critical water ./ SWSI indicates that northern area of the South Platte River
supply area? Basin will need an additional 18,400 AFY of water by 2020.
Does the system experience frequent ./ System does not experience frequent shortages or supply
shortaQes or supply emerQencies? emerQencies.
Does the system have substantial ./ Approximately 15 percent of Erie's supplies are unaccounted
unaccounted-for and lost water? for water.
Is the system experiencing a high rate of ./ Yes, the population of Erie is anticipated to more than double
population and/or demand growth? within the next 18 years.
Is the system planning substantial ./ Yes, Erie plans to continue to expand its water rights, facilities,
improvements or additions? and distribution system on an as needed basis.
Are increases to wastewater system ./ Yes, Erie is currently expanding the SWRF and planning to
capacity for Erie anticipated within the construct a Northern Water Reclamation Facility (NWRF)
planning horizon? which is scheduled to be online by 2009.

2-6

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