FLOOD08899

• County: Boulder
• Community: Longmont
• Stream Name: Lefthand Creek (mouth to Foothills HWY)
• Basin: South Platte
• Title: Floodplain Information Report
• Date: 12/1/1981
• Prepared For: Boulder County
• Prepared By: Gingery Associates, Inc.
• Contract/PO #: &&
• Floodplain - Doc Type: Floodplain Report/Masterplan

PREFACE

INTROOUCTION

This floodplain information report presents the results of a study on

Authorization

the Lefthand Creek Floodplain in the ~icinity of longmont, Colorado. It

was prepared from hydrologic and hydraulic information pro~ided by the
U.S. Army Corps of Engineers, Omaha District. The report document was
prepared by Gingery Associates, Inc., Englewood, Colorado at the request

This report was authorized by the Colorado Water Conser~ation Board
in joint sponsorship with Longmont, Colorado and Boulder County.
The Board's power and duty is .

"

to de~ise and formuhte methods, means and phns for bringing
about the greater ut111zationof the waters of the State and
the prevention of fJooddamages therefrom and to designate and
appro~e storm or floodwater runoff channels or basins, and to
make such designations a~ailab1e to 1egislati~e bodies of
cities and incorporated towns; to county planning commissions;
and to boards of adjustment of cities; incorporated towns; and
counties of this state. ,."

of the City of longmont and Boulder County in cooperation with the

Colorado Water Conservation Board.

Copies of this report are a~ailable for public distribution, for a

nominal fee, at the following listed offices:

City of Longmont
Department of Engineering
CI~ic Center Complex
3rd & Klmbark Streets
Longmont, Colorado B0501
776-6050

as stated in Section 37-60-106 (1)(c) of the Colorado Revised Statutes

1973.

The cities, incorporated towns, and counties within the study area

may provide zoning regulations. . ,

"

Boulder County
Department of Public Works
P,O.Box471
2045 13th Street
Boulder, Colorado B0306
441-3900

". "

to establlsh, regulate, restrict, and limit suCh uses on or
along any storm or floodwater runoff channel or basin, as
such storm or floodwater runoff channel or baSin has been
designated and approved by the Colorado Water Conser~ation
Board, in order to lessen or avoid the hazards to persons and
damage to property resultiny from the accumuhtion of storm
orf1oodwaters.. ,n

ColoradO Water Conser~ation Board
323 State Centennial Building
1313 Sherman Street
Denver, Colorado 80203
866.3441

as stated in Section 3D-2B-l11 for county go~ernments and Section

31-23.201 for municipal governments of the Colorado Revised Statutes 1973.

Therefore, upon official appro~al of this report by the Colorado

TeChnical back-up data is available for review from the offices
liHed al>ov>:. The technical back-up includes all pertinent data and cal-

Water Conservation Board, the areas described as being inundated by the

100-year flood (see Glossary - lnt~rmpdi~tp Regional FlOOd) can be

culations used in the floodplain analysis.

designated as flood hazard areas and their use regulated accordingly by
the local agencies.

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