FLOOD01986

• County: Bent
• Community: Las Animas
• Stream Name: Arkansas River
• Title: Las Animas Local Protection Project Design Memorandum
• Date: 8/22/1968
• Prepared For: Las Animas
• Prepared By: US Army Corps of Engineers
• Floodplain - Doc Type: Project

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LAS AHIMAS LOCAL PROTECTION PROJECT
ARKANSAS RIVER, COLORADO
DESIGN MEMORANDUM NO. 2
GENERAL DESIGN NEHORAiWUM

I - AUTrlORIZATION

1-01. Introduction. Presented herein are the results of compreheU$ive
general design memorandum studies on the Las Animas Local Protection Project.
This memorandum is of detailed scope and presents design information for all
features of the project other than hydrology. The hydrology memorandum (Design
r~morandum No.1, Hydrology) was submitted 3 October 1967. The data presented
herein is of detailed design memorandum scope; and after review and approval by
higher authority, will serve as the basis for preparation of' contract plans
and specifications. The purpose of the Las Animas Local Protection Project is
to protect the City of Las Animas and adjacent agricultural land located in the
flood plain of the Arkansas River. Results of investigations for project re-
locations are presented to serve as a basis for preparation of relocations
agreements.' A separate feature design memorandum on relocations will not be
submitted. The authorized project plan is presented in detail in House Document
No. 165, 89th Congress, 1st Session. '

1-02. Project authorization. Congressional authority for construction of
the Las Animas Local Protection Project is contained in the Flood Control Act
of 1965, Public Law 89-298, 89th Congress, 1st Session. Section 204, Title II
of the act reads in part, under "Arkansas River Basin" as follows:

"The project for flood protection on the Ark-aRSas River at Las Animas,
Colorado, is hereby authorized substantially in accordance with the recommenda~
tions of the Chief of Engineers in House Document Numbered 165, 89th Congress,
. 1st Session, at an estimated cost of $1,541,000."

1-03. Authority for definite project studi~ and investigations is con-
tained in advice of allotment No. C-357 dated 30 November 1966, Appropriation
96X3l22 Construction, General, Corps of Engineers, Civil.

1-04. Project document plan of improvement. The recommended plan of
flood protection presented in the project document would consist essentially
of about 9.6 miles of levee on the right bank and about 1.0 miles of levee on
the left bank of the Arkansas River to provide protection to the City of Las
Animas and vicinity against flows up to 140,000 c.f.s. Appurtenant works would
include levee protective measures; interior drainage and irrigation facilities;
a railroad grade raise and bridge alteration; a sewage pumping plant.for disposal
of efflu'ent from the existing lagoons during periods of high flow in the river;
and alterations to existing facilities.

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1-05.
that prior
assuranc.es

.'
Requirements of local cooperation.
to initiation of construction of the
satisfactory to the Secretary of the

The project document specifies
project, local interests furnish
Army that they will: