FLOOD10452 ‎(2)‎

• Designation Number: 593
• County: Douglas
• Community: Douglas County and Incorporated Areas
• Title: FIS - Douglas County and Incorporated Areas - Vol 1
• Date: 9/30/2005
• Prepared For: Douglas County
• Prepared By: FEMA
• Floodplain - Doc Type: Current FEMA Regulatory Floodplain Information

New Bridges:

Cottonwood Drive bridge
Lincoln Avenue Bridge
E-470 bridges

Bridge Replacements: West Parker Road bridge
Stroh Avenue bridge

Urban Developments: Parker Station Subdivision
Parker Water and Sanitation District treatment plant
expanSIon

Cherry Creek was reanalyzed from the Arapahoe/Douglas County line to a point
approximately 2,100 feet above the Stroh Avenue bridge. The revised reach
passes through both the Town of Parker and the unincorporated areas of Douglas
County. The revised hydraulic analysis for this each was based on a revision
performed by CRB engineering, Inc., Lakewood, Colorado, which utilized the
USACE HEC-2 step-backwater computer program. The study is presented in a
technical report entitled "Request for Map Revision for Cherry Creek at Parker,"
dated April 1991. These FIRM panels also show the new corporate limit
boundaries for the Town of Parker.

For the January 5, 1996, FIS revision, the following Letters of Map Revision
(LOMRs) were incorporated:

a. The LOMR issued on August 29, 1994, for a reach along Jordan Road
Tributary and a reach along Newlin Gulch. This LOMR was issued to show
the effects of the construction of the Jordan Road Tributary diversion channel
and two 4-foot by 9-foot box culverts along Jordan Road Tributary from its
confluence with Newlin Gulch to approximately 700 feet upstream of
Stonegate Parkway, and the effects of updated topographic information along
Newling Gulch from its confluence with Cherry Creek to approximately 2,250
feet upstream of Jordan Road.

The construction of the diversion channel includes the shift of the confluence
of the Jordan Road Tributary with Newlin Gulch to approximately 5,500 feet
upstream of its previous location. The 100- year flood discharge is contained
in the diversion channel along Jordan Road Tributary. AS a result of the
redirection of flow caused by the diversion channel, the Special Flood Hazard
Area along Jordan Road Tributary has increase upstream of Jordan Road and
been eliminated downstream of Jordan Road.

b. The LOMR issued on February 21, 1995, for the Town of Parker, Colorado,
for a reach of Sulphur Gulch. This LOMR was issued to show the effects of
the realignment and associated channelization of Sulphur Gulch from
approximately 1,500 feet to approximately 100 feet downstream of Parker
Road.

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