C153362 Feasibility Study

• Contract/PO #: C153362
• Contractor Name: Trinidad, City of
• Contract Type: Loan
• Water District: 19
• County: Las Animas
• Bill Number: SB 81-439
• Loan Projects - Doc Type: Feasibility Study

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.. SUMMARY AND RECOMMENDATIONS

PROJECT SUMMARY

The Trinidad Water Supply Improvement Project proposes an
expansion in the City's water treatment plant, for improve-
ment of the raw water transmission line by upgrading of
valve controls and renovation of intake structures, and
installation of a new raw water transmission line from the
North Lake Intake Aqueduct to Lake Monument. Construction
of the raw water transmission line would be delayed from 5
to 7 years, and would be included in a Phase II development,
if needed.

The objectives of the proposed project are to upgrade and
expand the municipal water supply system, provide for
current and future water supply requirements, enhance the
utilization of existing water rights, and provide for a
greater degree of safety in meeting peak demands during
prolonged drought periods.

The project facilities are located in what is known as the
City of Trinidad's Mountain Water Supply System area,
approximately 30 miles west of Trinidad. Trinidad and the
project area are in Las Animas County. The water supply
is provided by tributaries of the Purgatoire River,
including its North Fork.

The water supply system consists of direct diversion
facilities from the North Fork and other tributaries into
North Lake and Monument Lake, raw water transmission lines
from each lake downstream approximately 2 miles to a water
treatment plant, and a treated water transmission line
approximately 30 miles long to overhead and ground-level
covered storage tanks in town. A typical distribution
system then carries treated water to the residents of the
town and to outlying areas. Several individuals and small
water-user associations tap directly into the 30-mile
transmission line into town.

Currently the system serves about 80 percent of the Las
Animas County population. About 70 percent of the County's
residents live in Trinidad. Population being served both
in and out of town is approximately 12,800. There currently
are requests for another 700 taps into the system, including
those living in the City of Starkville. With expansion of
the distribution system and increased growth, the population
served in 2010 is projected to be 17,500.

The system's water supply availability is dependent upon
both the runoff within the tributary streams and water
right constraints. The City has "senior" diversion rights

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