FLOOD09065

• County: Routt
• Community: Oak Creek
• Stream Name: Oak Creek
• Basin: Yampa/White
• Title: Flood Hazard Identification Report
• Date: 9/1/1986
• Prepared For: Town Oak Creek
• Prepared By: CWCB
• Floodplain - Doc Type: Floodplain Report/Masterplan

I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I

INTERPRETATION AND USE OF REPORT

Flood Frequency and Discharge

Discharges listed in "Hydrologic Analysis" in this report
for the 10-, 50-, 100-, and 500-year frequencies. This
information can be used for planning and engineering of
improvements as well as for floodplain regulations upon
designation by the Colorado Water Conservation Board.

are given
discharge
floodplain
official

The 100-year flood can be expected to occur at any time in a given
area. Based upon recorded historical precipitation, land runoff
characteristics and other data, ther is a one percent chance that the
100-year flood will be equalled or exceeded in anyone year. The
100-year flood is considered by CWCB and the Federal Insurance
Administration as the flood magnitude for which floodplains should be
designated for regulatory and improvement purposes. In Colorado, the
100-year floodplain is an area of state interest as defined in House Bill
1041 - Section 24-60-101 of the Colorado Revised Statutes.

Flood events rarer than the 100-year
occur. Plans for land improvement adjacent to
should consider the probability of flood damage.

flood
the

event can and will
100-year floodplain

Flood Elevations

Plates 14 through 17 show the 10-year and 100-year flood profiles
for Oak Creek. It should be noted that, for each bridge crossing Oak
Creek, "top of road" (shown on the profile sheets) refers to elevation of
the road directly above the culvert(s). At each bridge crossing, with
the exception of the railroad bridge, the elevation of the ground or
roadway approaches to the bridge is lower than the bridge itself.
Therefore at most crossings, some of the flood water flows around the
bridge.

Plate 18 is
the computed lOO-year
gives a summary of
HEC-2 computer output
Board. In case of
flood profiles should

a graphical display of some of the cross-sections and
flood elevations at these cross-sections. Table 1
pertinent data at each cross-section. The actual
is in the files of the Colorado Water Conservation
any question regarding 100-year flood elevations, the
be consulted.

Flood Insurance

The National Flood Insurance Program (NFIP) is a Federal program
that enables property owners to buy flood insurance at a reasonable,
subsidized cost. In return, communities are required to carry out
floodplain management measures to protect lives and new construction from
future flooding. Exhibit 3 gives some NFIP rate information. Additional
information on the NFIP is available as follows:

COMMUNITY INFORMATION:

AGENT & BROKER INFORMATION:

Federal Emergency Management Agency
Natural & Technological Hazards Division
Bldg. 710, Denver Federal Center
Box 25267
Denver, CO 80225-0267
(tel. no. 235-4830)

7

Mr. Jim Quinn
Computer Sciences Corp.
2801 Youngfield
Sui te 320
Golden, CO 80401
(tel. no. 231-9911)