FLOOD03506

• County: Jefferson
• Community: Lakewood
• Stream Name: South Lakewood Gulch
• Basin: South Platte
• Title: Major Drainageway Planning
• Date: 8/1/1978
• Prepared For: Lakewood
• Prepared By: UDFCD
• Contract/PO #: &&
• Floodplain - Doc Type: Floodplain Report/Masterplan

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RONALD C. MCLAUGHLIN
KENNETH Fl. WRIGHT
HALFORD E. ERICKSON
DOUGLAS T. SOVERN
WILLIAM C. TAGGART
THOMAS W. MORRIS

WRIGHT-McLAUGHLIN ENGINEERS
ENGINEERING CONSULTANTS

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JIMMIE D. WHITFIELO
JOHN T. MCLANE
DAVID J. LOVE
RONALD B. CLONINGl':R

2420 ALCOTT STREET
DENVER, COLORADO 80211
[phone]

COMPLETE ENGINEERING SERVICES
IN THE THE SPECIALTY FIELDS OF

WATER SUPPLY AND DISTRIBUTION
WATER AND SEWAGE TREATMENT
SEWAGE COLLECTION AND REUSE
STORM DRAINAGE
FLOOD CONTROL AND
OTHER WATER-ORIENTED PROJECTS

Mr. L. Scott Tucker
August 17, 1978
South Lakewood Gulch
Page 2

COLORADO WATE~ CONSER"i;,T:{ so.
0'>'> STATE CENT'I"':":.'I 8":! e,',:"
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1313 SHEfmM~ STREET
DENVER, COLOi\~,CO 20,:03

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August 17, 1978

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Mr. L. Scott Tucker
Executive Director
Urban Drainage and Flood Control
District
Suite 156-B
2480 West 26th Avenue
Denver, Colorado 80211

maintenance costs (50-year, 6-5/8%) are estimated at $57,000. A break-
down of these costs is presented with each of the plan and profile drawings.

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It is recommended that the initial construction effort be directed to the
development of the total retention storage facil ity at Garrison Street.
This improvement offers the single most significant effect of flow reduction
and resulting downstream hydrology. The Rockmont College Ponds are an
existing safety hazard and should as such be upgraded to meet the minimum
State Engineer's requirements.

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Re: Letter of Transmittal,
South Lakewood Gulch
Major Drainageway Planning - Phase B

The development of the additional storage capacity at Rockmont College
should be undertaken next to further reduce downstream flows.

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Dear Mr. Tucker:

The channel from Rockmont to First Avenue would be
the modifications to the pond at First and Balsam

a third priority with
following fourth.

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The Phase B report attached completes Agreement No. 76-10.2, MAJOR
DRAINAGEWAY PLANNING AND FLOOD HAZARD AREA DELINEATION FOR SOUTH LAKEWOOD
GULCH, dated November 16, 1976. Work under this agreement has been divided
into three items. The purpose of Phase A was to define special drainage
problems within the basin, to evaluate alternatives and to make recommendations
for the best solution. Phase B further develops the selected alternative
through preliminary design and refines total construction, operating and
maintenance costs. The third item consisted of the preparation of a Flood
Hazard Are2 Delineation report.

We are grateful to Mr. Ben Urbonas of your staff, Mr. Tom Goebel of the
City of Lakewood and the Lakewood Parks Department personnel for their
cooperation and assistance in developing this preliminary design for the
South Lakewood Gulch Major Drainageway Plan.

As always, we have enjoyed working on this UDFCD and City of Lakewood flood
control project and remain available to implement the Master Plan.

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Very truly yours,

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The recommended plan for South Lakewood Gulch is a combination of a maximum
storm water retention facility and two on-site detention storages, under-
ground condurt: and box culverts, grass-lined and where necessitated
structural wall channels. All of the improvements are designed to meet the
100-year storm criteria.

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By
Kenneth R. r' ht,
Principal Engineer

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Master Plan drawings have been prepared showing the location and extent
of improvements and are presented at a reduced scale in this report.

WRIGHT-McLAUGHLIN ENGINEERS

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The improvements for South Lakewood Gulch are based on minimizing the
hazards to life and property along the full reach of the gulch coincident
with providing multipurpose amenities.

By

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The Master Drainageway
parks and open space.
flood plain management

Planning offers opportunities to Lakewood for city
It can also be used as a demonstration project of
of a small urban waterway.

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The projected total cost
which includes costs for
administrative expenses.

of the Master Plan Improvements is $1,761,000,
engineering contingencies, fiscal, legal and
The present work of the annualized operation and

By

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KRW:DL:MB:hs

Attachment

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762- 69B

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B RANCH OFFICES
ASPEN
p, O. BOX 8028
ASPEN. COLORADO 81611

DILLON LAKE
P_O. BOX 1171
FRISCO, COLORADO 80443

GLENWOOD SPRINGS
P_O. BOX. 1286
GLENWOOD SPRINGS.
COl..ORADO 81601

STEAMBOAT SPRINGS
P.O. BOX !5220
STEAMBOAT VILL....GE.
COLORADO B049g

LEAD/DEADWOOD
93 SHERMAN
DEADWOOD.
SOUTH DAKOTA 57732