FLOOD05386

• County: Arapahoe
• Community: Sheridan
• Stream Name: Bear Creek
• Basin: South Platte
• Title: Flood Insurance Study - City of Sheridan
• Date: 12/4/1985
• Prepared For: Sheridan
• Prepared By: FEMA
• Floodplain - Doc Type: Historic FEMA Regulatory Floodplain Information

levee, or other local water-control
structure; areas subject to certain
types of 100-year shallow flooding
where depths are less than 1.0 foot;
and areas subject to 100-year flooding
from sources with drainage areas less
than ,1 square mile. Zone B is not
subdivided.

Zone C:

Areas of minimal flood hazard; not
subdivided.

The flood elevation differences" FHFs, flood insurance zones,
and base flood elevations for each flooding source studied in
detail in the community are summarized in Table 3.

5.4 Flood Insurance Rate.Map Description

The Flood Insurance Rate Map for the City'of Sheridan is, for
insurance purposes, the principal product of the Flood Insurance
Study. This map contains the official delineation of flood insurance
zones and base flood elevations. Base flood elevation lines show
the locations of the expected whole-foot water-surface elevation
of the base (lOO-year) flood. The base flood elevations and zone
numbers are used by insurance agents, in conjunction with structure
elevations and characteristics, ,to assign actuarial insurance
rates to structures and contents insured under the NFIP.

6.0 OTHER STUDIES

, A Special Flood Hazard Information report for Bear Creek was published
in 1972 (Reference 1,). The report inQluded a hydrologic analysis of
Bear Creek using 1970 channel conditions and development. The report
was completed before' the construction ,of the Bear Creek Dam; therefore,
discharges and flood elevations deter~ined in the report do not reflect
present day flooding conditions.

The COE prepared a hydrologic analysis for Bear Creek downstream of
Bear Creek Dam (Reference 2). Peak discharges were developed for different
basin conditions. The discharge values developed using full basin devel-
opment conditions are in agreement with the discharges used in this
study.

A Flood Hazard Area Delineation report for Bear Creek was published
in 1979 (Reference 6). Hydrologic and hydraulic data for fully developed
basin conditions, which were presented in that report, were utilized
in this study.

This study is in agreement with the Flood Insurance Studies for t~e
City and County of Denver (Reference 12), the City of Englewood (Refer-
ence 13), and the unincorporated area,. of Arapahoe County (Reference 14).

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