WSP02829

• File Number: 8221.110.J
• Description: Juniper-Cross Mountain Project
• State: CO
• Basin: Yampa/White
• Water Division: 6
• Date: 9/1/1981
• Title: Water Resources Appraisal For Hydroelectric Licensing: Yampa River Basin - Colorado & Wyoming
• Water Supply Pro - Doc Type: Report/Study

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Existing Water and Related Land Resources Development

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The power COUE produces at these plants is delivered to distribution coopera-
tives which are wholesale customers of COUE and are located generally in the
western and southern parts of Colorado. TRGT uses its share of the energy to
serve its wholesale distribution cooperative customers located chiefly in the
northeastern quarter of Colorado. PRPA divides its share of the energy between
its four municipal member systems, Estes Park, Ft. Collins, Longmont, and
Loveland, located in north central Colorado. The SARV power is delivered to
its member customers by a displacement contractual agreement with WAPA.

All of the utilities in the basin are members of the Rocky Mountain Power
Pool (RMPP). This is an informal, noncontractual association of 14 electric
systems (public, private, and Federal systems) operating in Colorado, Wyoming,
and parts of Montana, Utah, Nebraska, and South Dakota. The pool resolves
daily and seasonal operating problems among members and with other intercon-
nected pools and groups. Its primary function is to coordinate the activities
of the pool regarding operation, including coordination of generation, mainte-
nance schedules, underfrequency load shedding, relaying, scheduled outages of
key transmission facilities, and investigation and analysis of disturbances.
RMPP does not have central planning or central dispatch functions and does not
have a staff. The basin's utilities are also members of the Western Systems
Coordinating Council (WSCC) which encompasses all the major electric utilities
and most of the smaller systems located in the eleven western states and The
Canadian Provinces of British Columbia and Alberta. WSCC also overlaps into
four bordering states on the eastern edge of the service territory. WSCC is
the largest, geographically, of the nine regional councils of the National
Electric Reliability Council. Colorado-Ute is also a member of Inland Power
Pool, a formal power pool with the principal objective of sharing reserve
capacity among its members. Members of the Inland Power Pool operate electric
generation and transmission systems in Arizona, Colorado, New Mexico, Wyoming,
and portions of Utah and Nebraska.

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The principal electric facilities located in the Yampa River basin are shown
on figure 4. Major transmission lines radiating from the two powersites are
owned or contracted for by the four powerplant owners to deliver their portion
of the power.

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Numerous high voltage lines extend from WAPA's major interconnection substa-
tion near the Hayden plant. WAPA has a 230-kilovolt line which traverses
northnortheast into Wyoming and interconnects with the Archer substation near
Cheyenne, Wyoming. Another short 230-kilovolt line of COUE extends east to
Steamboat Springs and branches off south to Wolcott, Colorado. A 138-kilovolt
line of WAPA extends west from the Hayden substation into Utah where it inter-
connects with another WAPA 138-kilovolt line extending east from Vernal, Utah.
Also, COUE owns a 138-kilovolt line extending south which interconnects with
Public Service Company of Colorado (PSCO). There are two 230-kilovolt lines
which interconnect the Craig and Hayden plants. These are owned by COUE,
TRGT, and WAPA.

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There are three major transmission lines extending from the Craig substation
near the plant site in addition to the two 230-kilovolt lines interconnecting
the Craig and Hayden plants. A 230/345-kilovolt line jointly-owned by the

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