FLOOD06505

• Designation Number: 202
• County: Weld
• Community: Milliken
• Stream Name: Local drainage
• Basin: South Platte
• Title: Floodplain Information Report - Drainage Plan and Street Improvement Plan at Milliken, Colorado
• Date: 10/1/1982
• Designation Date: 12/1/1982
• Floodplain - Doc Type: Floodplain Report/Masterplan

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INTRQOIJC'rION
Obiectives
The princip~l objectives of this study ~re:

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pl~ln crO&S sections Bhowin~ the high water elevations for the 10-, 50-, 100-,
and SOa-year floods at selected reference points.
The study evaluates structural and nonstructural improve~ent plens to
~itigate or alleviate flood hazard aress and presents a plan to guide future

To reduce the threat to human lite, personal injury, and related
health hazards caused by floods.

flood plain development In the study arCa.

~ draInage criteria and atreet

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d80190 manual was also prepared under separate COver to guide future develop-
ment and street improvement. ~ street flow net dnd preliminary street designs
were also pcepazed to be used as a guide in preparation of final street
con9t~uction plans. A sUppl~nent to this ~eport in the form of a technical
addend~ inclUdes the supporting engineering and hydrologic data ~hich may
further be used in engineering studies in the location and design of roads,
bridges, and chennel modifications.

TO reduoe or prevent flood danage and maintenance requirements to
public and private pro~rty end facilities.

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This report was authOr ired by ~~~ Colordo Water COnservation Soard in
joint sponsorship with the ~n of Milliken, Colorado. The Soard's power and
duty is

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To provide a sound technical basis for the management of flood
plains by structurel o~ nonstructu~al methods within the study
area.

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TO reduce traffic hazards and publiC inconvenience from flood waters
and enhanc~ emergency vehicle movement during flOOds.

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To make effective Uee of limited public funds dnd enhance the value
of land and other property in theconununity.

l'.uthorization

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To formulate and evaluate alternative flood control and drainage
concepts to determine the most economically feasible and practicel
plan,

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To prepare a cireinage criteria and etreet design manual for the Town
of "!lliken to guide future developments and improvements.

" to devise and formulate methods, means. and plane for bringing
about the greate~ utilization of the waters of the Beate and the preven_
tion of flood daOlages therefrom and to 'dAsign<<t~ and approve ato.... o~
flood "'ater runoff channe18 or basins, and to ""'ke such designations
aveilable to legislative bodies or oities ~nd incorporated towns, to
county pl"nninq commissions, and to boa~d6 of adjustment of cities,
Incorporated towns, andoounti"s of thiS state. . .

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To prepare preliminary designs for the selected i~provement plan
which will include curb, qutter.andstreetde"igns.

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To provide technicaliy aCCurate and manageable flOOd plain infor-
~ation aased on detailed mappinq for revising the e~'.sitnq flood
insurance study.

To document and report findings in Sufficient detail for planning,
zoning. and regulation purposes with ~n easy transition to oonstruc-
tionpurposes.

a. stated in Seotion 37-60-106(0) of the Colorado Revieed Statutes 1973.

The cities, incorporated towns, and counti..s within the study ...rea may
vrovide ~oning regulations . . .

el!minatedor mlnimi",ed.

It includes information on historioal floods,

~ . to establish, regulate, restrict, and limit such uaes on or along
any storm or flood _ter runoff chsnnel or baSin, aa such stOnrt or flood
water runoff channel Or basin has been designeated and approved by the
Colorado Water Conservation Board, in ord~r to I~~~en or avoid ~~"
ha",arda to persons and damage to property resulting from the accumulation
ofstonrtortloodwaters. "

PUrpose and Scope
This report was prepared to guide local offieials in planning the use and
regulatIon ot tioed plaIn areaS SUch that flood h"",,,rds and future damages are

existing factors Which influence the flood ha"'''rd, and the nature and extent
of probable future floods. This report "lso includes maps delineating flooded
~re~s for the 100_ and SOO-year flood bounda<ies, flood profiles. and flood

as stated in Section 30-26-111 for county qovernments and Section 31-23-201
for municipal governrnpn<~ of the Colorado ~vised St~tutes 1913.
Therefore. upon official approval of this report by the Colorado Water
Conservation Board. the areas described as bein~ inundated by the lOO-year
flood (inte~ediat~ r~91Dn.l flOOd) can be desiqnate~ as fl~,d hazard a<ea8