FLOOD04800

• County: El Paso
• Community: Colorado Springs
• Stream Name: Cottonwood Creek
• Basin: Arkansas
• Title: Engineering Study of Cottonwood Creek Drainage Basin
• Date: 8/7/1979
• Prepared For: Colorado Springs
• Prepared By: Lincoln Devore
• Floodplain - Doc Type: Floodplain Report/Masterplan

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therefore be more extensive in this area than in the other areas,

The two natural channels which do exist must be maintained and

improved. The major outfall channel, extending from Cragin Road

west of Academy Boulevard, through the railroad arch and bridge at

the Interstate, to Monument Creek, should be fully lined, with a

minimum bottom width of 6 feet, a depth of about 3.5 to 4 feet and

a minimum right-of-way of 50 feet,

The channel extending from Academy

Boulevard at Interstate 25, in a southwesterly circle behind Kelly

Johnson Boulevard and extending to the outfall ditch is a special

problem, This should be constructed with lined sides and stepped

to reduce velocity. In general, the existing channel would be

followed, This type of channel would be constructed with a bottom

width of 10 feet, an average depth of 4 feet and a total right-of-

way of 50 feet.

The existing channel system is relatively

short and will require extension into this sub-basin. The south

portion of the basin is a series of older subdivisions and an

underground system will be required. In the northern portion of

"B" basin, it is still possible to use a system of lined ditches,

This is recommended for a number of reasons. In general, however,

the portion of "B" basin east of Academy is divided into a number

of "tributaries" so that each of these ditches will be relatively

small, A retention system is recommended along these ditches to

decrease the size of required structures, See Problem Area section

for discussion of this,

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