FLOOD08571

• County: Larimer
• Community: Fort Collins
• Stream Name: West Vine Drainage Basin
• Basin: South Platte
• Title: Major Drainageway Planning
• Date: 12/1/1980
• Prepared For: Fort Collins
• Prepared By: Engineering Professionals
• Contract/PO #: &&
• Floodplain - Doc Type: Floodplain Report/Masterplan

I. I~7RODuC~ION
I.A. Authorization

<lna no
basin.

major drainageways or ctrainaqe
Due to the lack of definition

f"cilities

this report.
exigt in the

5. Analysis of the hydraulics for the basin to
determine the extent and severity of existing and
projected future floodinq.
6. Damage assessments within flood prone areils.
7. Preparation of preliminary designs and cost
estimates for the most feasible alternative
improvement scheme.
8. Consistent evaluation of the alternatives and a
recommendation as to the best drainage improvement
scheme.
9. preparation of final report.

The West Vine Drainage Basin below Overland Trail is approxi-

mately 50 percent developed as of the writing of

of flood hazard areas

and major drainageways, development has occurred over the
historical flow path and consequently, some of these develop-
ments have experienced frequent and rather serious drainage
related problems. In an effort to alleviate the drainage
problems which already exist and to insure that future develop-
ments are not constructed in flood hazard areas, the City of
Fort Collins,in cooperation with the Colorado Water Conservation
Board (CWCB), initiated a study of the basin referred to as
the West Vine Drainage Basin Study. In June of 1980 Engineering
Professionals. Inc. ';la5 retained by the City to prepare the
study. In response to the contract for said project, the study
has now been completed and the results are included herein.
LB. Scope

I.C. ~cknowledgements

A TeChnical Committee was established by the City to administer
the West Vine Drainage Basin Study. The committee consisted
of Marc Engemoen and Bob Smith of the City's Engineering Services
Division, and Randy Seaholm of the Colorado Water Conservation
Board. Throughout the course of this study valuable assistance
and information was given by these individuals, and their help
has been greatly appreciated. DClring the prclininary invostiga-
tion~ phase of this projeot, mPctings Were held with the various
entities which affect and/or are affcc-ccd by stOHt runoff within
the drainage basin. These entities dnd th~ individuals 3ssoci~t€d
with each are listed as follows'

The purpose for this drainage study was two-fold. One major
objective was to delineate flood hazard areas and to determine
the potential severity of flooding in said areas. The second
major objective was to prep~re alternative drainage improvement
schemes and rrovide sufficient data to allow evaluation of the
alternatives to arrive at the best alternative drainage
improvement scheme bilsed on technical. economic and Pllblic
acceptance criteria.

Ditch Comoanies
Pleasant Valley and Lake canal - John Michie
~ew Mercer Canal - LOuis Swift
Larim8r County No. 2 Canal Glen Johnson
Arthur Irrigation Company - Calvin Johnson
Colorado S-cate University
Dr. ~orman Evans
Robert eurnha",
Richard Hollar
POCldre SchOOl District R-I
,-._---
.ray Holeman
The cooperation of all of these indivuals is acknowleilged and

,.

1.

In or<1F'r to ac<"ompl ish th.. stat."<l nojP<"tj"""', ~h.. "t',ily
involVed the following rrajor work taSks,
1. Collection of field data.
2. compilation and evaluation of existing studies
and data for the study area.
3. Delineation of the drainage basin and subbasins.
4. Analysis of existing and proj€'<:,tE'G tutur>' hydrology
for the basin.

J .

<!relltly ,~pp_t"eci<~t~d.

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