FLOOD08336

• County: Chaffee
• Community: Poncha Springs, Salida
• Stream Name: South Arkansas River
• Basin: Arkansas
• Title: Floodplain Information Report - Lower South Arkansas River
• Date: 4/1/1979
• Prepared For: Chaffee County
• Prepared By: WRC Engineering, Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

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CHAPTER VI

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INTERPRETATION AND USE OF REPORT DATA

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Flood Frequency and Discharge

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This report was prepared to be compatible with the H.B. 1041 designa-

tion, Federal Insurance Administration flood insurance rate studies, and

can be adopted by local governments for regulation purposes. The 10-, 50-,

100-, and 500-year flood events were uaed as the flood frequencies for this

study.

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These flood events
of years as indicated.
chance of occurring in

have a probability of occurring once in the number

For example, the 100-year flood has a one percent

anyone given year.

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Information related to the 10- and 50-year floods could be used by the
local jurisdictions for planning purposes. They could be used in future
planning and design efforts related to various land use activities, such as
the design of roads and bridges, minor channel improvements, the planning
of parks and recreational facilities, and other types of hydraulic structures.

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The information provided in this report pertains only to the South Arkan-

sas River floodplairi. However, a number of tributaries, particularly Sand'

Gulch, King Gulch, and an unnamed gulch near County Road 107 have the potential

for flash flooding during summer cloudbursts. Planning for land areas adjacent

to these gulches should consider the hazards from these sources as well as

from the South Arkansas River.

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