FLOOD00644

• County: Logan
• Community: Sterling
• Title: Flood Control and Drainage Prioritization Analyses - Sterling and Vicinity
• Date: 11/8/1995
• Prepared For: Sterling
• Prepared By: Lidstone & Anderson, Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Gregory J. Koch, P.E.
Senior Engineer

Mr. Koch is a hydraulic/water resources engineer with Lidstone & Anderson, Inc. (LA).
He has been both project manager and senior engineer for studies involving:

. hydrologic, hydraulic and sediment transport analyses of natural and improved river
systems;

. preparation and updating of master drainage plans;

. preliminary and final design of flood control channels, channel erosion protection
measures, storm sewers, and dam outlet works; and

. evaluation of, and design of mitigation measures for, channel bed and bank erosion in
a variety of natural settings.

Mr. Koch is well-versed in the application of and theoretical basis for numerous
hydrologic and hydraulic computer models, including:

. the EPA Stormwater Management Model (SWMM);

· the U.S. Army Corps of Engineers' Flood Hydrograph Package (HEC-l);

. the U.S. Army Corps of Engineers' Backwater Prome computer model (HEC-2);

. the U.S. Army Corps of Engineers' unsteady flow model for analyzing full network
stream systems (UNET);

. the RMA models (FASTIABS) for two-dimensional analysis of open channels;

. the computer program which automates the Federal Highway Administration procedures
for designing culverts (HY-8); and

. the Urban Drainage and Flood Control District computer model for hydraulic analysis
of storm sewer systems (UDSewer).

Mr. Koch has been the project manager for many urban drainage system analyses and
designs in the Cities of Fort Collins, Golden, Greeley, and Firestone, Colorado, as well as the
City of Cheyenne, Wyoming. The following is a selected sample of studies for which Mr. Koch
has been involved:

. Project manager for Drake Road/Spring Creek Channel Improvements. This project was
conducted in conjunction with the widening of Drake Road between Shields Street and
Taft Hill Road in Fort Collins and included an update of the Spring Creek Master
Drainage Plan, analysis and design of the Spring Creek crossing of Drake Road,

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