FLOOD04309

• County: Eagle
• Community: Eagle County
• Stream Name: Stone Creek
• Basin: Colorado Mainstem
• Title: Flood Hazard Identification Report - Stone Creek, Eagle County, Colorado
• Date: 9/1/1986
• Prepared For: Eagle County
• Prepared By: CWCB
• Floodplain - Doc Type: Floodplain Report/Masterplan

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INTERPRETATION AND USE OF REPORT
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Flood Frequency and Discharge

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Discharges listed in "Hydrologic Analysis" in this report are given
for the 10-, 50-, 100-, and sOO-year frequencies. This discharge
information can be used for planning and engineering of floodplain
improvements Upon official designation by the Colorado Water
Conservation Board, the study should be used for administration of
floodplain regulations along the study reach.

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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, there 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 regulat6ry 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.

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Flood events of greater magnitude than the 100-year flood
and will occur. Plans for land improvement adjacent to the
floodplain should consider the probability of flood damage.

event can
100-year

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Flood Elevations

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Plates 3 through 5 show the lOO-year flood profile for Stone Creek.

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Plate 6 shows a graphical display of some of the cross-sections and
the computed lOO-year flood elevations at these cross-sections. Table 1
gives a summary of pertinent data at each cross-section. The actual
HEC-2 computer output is in the files of the Colorado Water Conservation
Board. In case of any question regarding lOO-year flood elevations, the
flood profile should be consulted.

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