FLOOD06837

• County: Alamosa
• Community: Alamosa
• Stream Name: Rio Grande
• Basin: Rio Grande
• Title: Master Drainage Plan Alamosa
• Date: 3/1/1982
• Prepared For: Alamosa
• Prepared By: McCarty-Hurst
• Floodplain - Doc Type: Floodplain Report/Masterplan

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The main problem that is encountered is a high ground-water table.
The construction of large-diameter pipelines will be affected. The
water will have to be lowered during the construction phase. Also,
special trench shoring may be required to prevent sloughing of the
trench.

Cost estimates for land acquisitionwereobtained from appraisers
working in Alamosa. Prices ranged from $0.50 per square foot to
$4.00 per square foot, depending upon location, existing zoning,
future land use, and access. No distinction was made at this time
between the purchase of fee simple title or the purchase of an ease-
ment. The final placement of the project and negotiations with the
land owner will determine whether fee simple or easement is best.

Table 4 is a summary of the estimated construction costs for each
alternative. The construction costs include a 25-percent contingency
factor to allow for construction details not considered in this plan-
ning study. The engineering, surveying, inspection, and administra-
tion costs are estimated to be 20 percent of construction costs.
Costs are considered appropriate for construction occurring in the
1982 construction season. For construction in subsequent years,
these cost estimates should be appropriately modified.

Table 5 is a list of priorities that are recommended for implementa-
tion of the plan presented herein. Where alternatives have been pre-
sented, Table 5 presents the recommended alternative. The priorities
were selected based upon the type of problem and the results gained
by the construction.

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