FLOOD05827

• County: Boulder
• Community: Boulder
• Stream Name: Boulder Creek
• Basin: South Platte
• Title: Boulder Creek Phase B
• Date: 12/1/1979
• Prepared For: Boulder
• Prepared By: UDFCD
• Floodplain - Doc Type: Floodplain Report/Masterplan

7)

HEC-2 computer print-outs for lOO-year existing condi-
tions, floodway listing for a one foot rise, multidis-

charge listing, and revised floodway computations.

Qualitative evaluation of debris problems.

8)

c. Floodplain and Floodway Maps

1) Map showing 100-year and 500-year floodplains, areas of
lOO-year floodplain where depths exceed two feet, and

areas of the 100-year floodplain where velocities exceed

two feet/second. (Set of 2l maps at l"=lOO').

d. Engineering Design and CoSt Estimates

l) Plan maps of 50-, 100-, and 500-year excavated floodways
showing locations of levees, floodwalls, floodway

extremities, land ownership and other features.

2) Profile drawings of 50-, lOO-, and 500-year excavated
floodways showing water surface, levee and floodwall

heights, bridge elevations, and other features.

3) Quantity and cost estimates for 50-, 100-, and 500- year
excavated floodways.
4) Map showing structures to be demolished and rebuilt or
physically relocated under Plan II I.
5) Map showing structures to be flood-proofed or relocated
under Plan III.

e. Reports

l) Boulder Public Information Fact Sheet published April
1971.

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2)

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Prel iminary draft report for Review Report for Water and

Related Land Resources Management Study, Metropolitan

Denver and South Platte River and Tributaries; Colorado,

Wyoming, and Nebraska; Part 10 Boulder Creek Boulder
, ,
Colorado.

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2.

Field trips were taken both within the basin and to other relevant

areas which identified the following'

a. Location, function and condition of existing drainage facilities.

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b. Type, size, condition and activity of existing commercial,

agricultural and residential structures.

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c. Basin environmental characteristics such as sediment size

distribution, variety and size distribution of existing
vegetat ion.

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d. Basin physical characteristics such as existing utilities and
right-of-way limitations.

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3.

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Project meetings were held with representatives of all the entities
,
citizens groups, the UOFCD, Corps of Engineers, and Federal

Emergency Management Agency (FEMA) throughout the development stage

of this project, which provided valuable information concerning'

a. Documentation of historic flood experience within the Basin.

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b. Recognized and acknowledged problem areas and possible
solutions.

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