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

completed in August 1985. Hydrologic information
was obtained from the initial Castle Rock FIS, the
Douglas County FIS, and previous Urban Drainage and
Flood Control District (UDFCD) reports. The major
portion of the hydraulic analyses was taken directly
from the initial Castle Rock FIS and UDFCD reports.
The balance of the analyses was developed by J.F. Sato
and Associates, Inc.

Douglas County
(Unincorporated Areas): the hydrologic and hydraulic analyses for the January 5
1996, FIS report were prepared by Howard, Needles,
Tammen and Bergendoff, for FIA, under Contract No.
H-4016. That work was completed in July 1978. The
hydrologic and hydraulic analysis for portions of East
Plum Creek and Sellers Gulch and for portions of
streams studied by approximate methods were
performed by J. F. Sato and Associates, Inc., for
FEMA, under Contract No. 84-C-1631. That work was
completed in August 1985. The major portion of the
hydrologic information was obtained from the initial
Douglas County FIS, and previous UDFCD reports.
The balance of the analyses was developed by J.F. Sato
and Associates, Inc.

Larkspur, Town of:

the hydrologic and hydraulic analyses for the
September 30, 1987, FIS were taken from the FIS for
Douglas County.

Parker, Town of:

the hydrologic and hydraulic analyses for the
February 2, 1996, FIS were taken from the FIS for
Douglas County.

The authority and acknowledgments for the City of Lone Tree is not included
because there are no previously printed FIS reports for that community.

For this countywide FIS, the updated and new hydrologic and hydraulic analyses
were taken from the following UDFCD, Colorado Water Conservation Board
(CWCB), and Douglas County reports:

· "Flood Hazard Area Delineation Big Dry Creek (Arapco) & Tributaries",
prepared by WRC Engineering, Inc.
· "Flood Hazard Area Delineation Willow Creek, Little Willow Creek, and
East Willow Creek", prepared by Greenhome & O'Mara, Inc.
· "Flood Hazard Area Delineation Plum Creek Watershed", prepared by
WRC Engineering, Inc.
· "Flood Hazard Area Delineation, Cherry Creek Corridor - Reservoir to
Scott Road", prepared by URS Corporation

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