FLOOD06828

• Designation Number: 177
• County: Jefferson
• Community: Unincorporated Jefferson County
• Stream Name: Weaver Creek
• Basin: South Platte
• Title: Flood Hazard Area Delineation - Weaver Creek
• Date: 5/1/1981
• Designation Date: 9/1/1981
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Introduction

the time of the mapping. Profiles for the 10- and 100-year
floods, and data describing the floodway are also provided.
The study has been prepared in sufficient detail to allow the
planning of new subdivisions and buildings with knowledge of
channel and flood plain characteristics.

The Weaver Creek drainage basin lies within the boundaries of

Jefferson County <1nd the City of Lakewood_~ as shown on the
Basin map included \vith the drawings of this report. Land is
being subdivided and channel improvements are being made at a
rapid rate between the Hogback Ridge and U. S. Highway 21:35.
The primary objective of this study is to prepare flood plain
maps so the local governments can implement flood plain
zoning ordinances to reduce potential flood damages ond
unwise development in tl-le flood plairl. ~he City and County o[
Denver originaLly requested that Urban Drainage and Flood
Control District undertake this flood hazard area delineation
when a portion of the developing area was withen Denver.
Subsequent court action forcccl deannexation of thi s area, and
presently none of the basin is within Denver.

Data Collection

In[ormation was

from a number of

agencies
agencies

duri ng the course of thi s study
and local entities. The following
contacted, and the information

collected

summarizes the

obtainted.

I'
,.or

the

Urban Drainage and Flood Control District, wlder
dated December 18,1975. DeLgiled topographic

"Flood water surface elevations and flood plain

boundaries are often revised by road and bridge

construction [lood plain development, flood control

improvements, or natural processes. Prior to utilization

of the report for planning or design purposes, the user

is advised to contact the Urban Drainage and Flood

Control District or the Colorado Water Conservation

Board to determine if the information in this report has

been amended."

Th~ hydr()~ogic and hy,,~t-uulic portions of thi s study were
undertClken by Leonard Rice Consulting Water F.l1gineers, Tnc.

c:ontract

mapping and field survey dat8 for t~ crossing structures was
prepared by Merrick and Company, under separate contract with
the District. An amendment to Chi,:> contract, dated December
28,1979, provided for revision of the hydraulic portion of
the study for the reach from Simms Street to Eldridge Street.
This was done to account for channel improvements constructed
in this reach. Topographic mapping in this reach was prepared
by Reids Aerial Mappins in January, 1980.

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is de[ined
conditions

for the
develop-
detailed

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Thi s study i nc: udes development of
10-, 50- and 100-year floods, based
ment. The 100-year flood hazard area
topographic mapping based on channel

flood hydrology
on future basin

D~,:'~'i]~, CLL'~i..',;:J ~C2J3

on

existing at

~ Leonard Rice Consulting Water Engineers. Inc.

~ Leonard Rice Consulting Water Engilleers.lllc.