FLOOD08183

• County: Summit
• Community: Breckenridge
• Stream Name: Blue River
• Basin: Colorado Mainstem
• Title: Floodplain Information Breckenridge
• Date: 9/1/1974
• Prepared For: Summit County
• Prepared By: Leonard Rice Consulting Water Engineers, Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

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FUTURE FLOODS

Although flood producing storms of the same magnitude as
those that have occurred in the past, could recur in the
future, this report ill limited to delineating the flood plains
created by the Intermediate Regional and the Standard Project
Floods. Peak discharges for the 10 and 25-year floods are
tabulated but their flood plains have not been delineated.
The Standard Project Flood is a rF event that could Eeason-
ably be expected to oc,:;ur in the ~ture. The Standard Project
Flood would be larger and would occur less frequently than
(the Intermediate Regional Flood. As previously indicated,
both floods are a combination of snowmelt runoff and cloud-
burst type storms of limited areal extent. Combinations of
different snowpack depths coupled with different rainfall
,-
intensities and_~uratiqns. will produce flooding of different
magnitudes.

caused by debris collecting ,against
material in the stream channel.

~REQUENCY OF FLOODING

Floods created by the 10, 25-yea~ Intermediate Regional
and Standard Project events are cOQbina\~~.9s,of snowmelt runoff
,~~v...r.y~ .' ~,'J.A""~
and cloudburst activity. The storm/centers) for the flood
\..-
producing events are located above the town of Breckenridge