FLOOD10617 ‎(2)‎

• County: Boulder
• Community: Boulder County and Incorporated Areas
• Title: FIS - Boulder County and Incorporated Areas - Vol 1
• Date: 10/4/2002
• Prepared For: Boulder County
• Prepared By: FEMA
• Floodplain - Doc Type: Current FEMA Regulatory Floodplain Information

this study were performed by various engineering firms for the
purposes of floodplain evaluation and are discussed in Section 7.0.

The hydrologic and hydraulic analyses for the original study for
the City of Boulder were performed by the U . S . Army Corps of
Engineers (USACE), for FEMA under 7nteragency Agreement
No. XAA-H-15-72, Project Order Nos. 2 and 3, Amendment No.1. This
work was completed in October 1975.

Revised hydrologic and hydraulic analyses for the City of Boulder
in the area of the confluence of Boulder and South Boulder Creeks
were completed in JUly 1982 by Leonard Rice Consulting Water
Engineers and were incorporated into this study. This is a result
of channelization projects on South Boulder Creek and Dry Creek in
the Flatiron Industrial Park area.

Revised hydrologic and hydraulic analyses for the City of Boulder
for Boulder Creek were completed in January 1983 by MUller
Engineering Co., Inc., and were incorporated into this study.

Revised hydrologic and hydraulic analyses for the City of Boulder
for Wonderland, Fourmile Canyon, Skunk Canyon, Bear Canyon,
Twomile, and Goose Creeks for the study reaches outlined in
Section 2.1 were perfo~d by MSM/SP Group, for FEMA, under
Contract No. EMW-C-0709. This work was completed in April 1985.

Revised hydrologic and hydraulic analyses for the City of Boulder
for Sunshine Canyon, Bear Canyon, Gregory Creek, Skunk Canyon,
Bluebell Canyon, and Fourmile Canyon Creeks and Kings Gulch were
done by Greenhorne and O'Hara, Inc. (G&:O). A revised hydraulic
analysis for South Boulder Creek was completed in JUly 1986 by G&O,
and was inco~orated into this study.

Revised hydrologic and hydraulic analyses for the City of Lafayette
and the Towns of Jamestown, Lyons, Nederland, and SUperior were
perfo~d by Howard, Needles, Tammen & Bergendorff, for PEMA, under
Contract No. H-4016. This work, which was completed in
Februa~ 1978, covered all significant flooding sources affecting
Lafayette, Jamestown, Lyons, Nederland, and Superior.

The hydrologic and hydraulic analyses for the initial study for the
City of Longment were performed by Gingery Associates, Inc., for
FEMA, under Contract No. H-3716. That work was completed in
March 1976.

The additional hydrologic and hydraulic analyses for the City of
Longment for the revised study were performed by Gingery
Associates, Inc., Simons, Lee and Associates, and Water Resources
Consultants, Inc., for the Colorado Water Conservation Board
(CWCB), as reported in floodplain info~tion reports for Lefthand
Creek (References 1 and 2), and for Dry Creek No.1 and St. Vrain
Creek (References 3 and 4, respectively).

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