Todd H. Bennett, P.E.
Senior Project Engineer
Mr. Bennett has over 12 years of extensive experience, and a strong
educational background, in hydraulics, hydrology, and numerical modeling.
His experience includes numerous hydraulic studies, hydrologic simulation
modeling of watersheds, water quality modeling, and planning and modeling
salmonid habitat restoration projects. He is familiar with many hydraulic,
hydrologic, reservoir simulation, and water quality computer modeling
programs including HEC-RAS, MIKE11, HEC-2, UNET, RMA2, SMS, HECHMS, HEC-1, CWMS, HEC-ResSim, HSPF, CE-QUAL-W2, BASINS, and
QUAL2E. Both his college and graduate degrees specialize in hydrology and
hydraulics.
Registration
Professional Civil Engineer
Washington No. 37843
Education
M.S. (Civil Engineering)
University of California, Davis
B.S. (Civil Engineering)
University of Washington,
Seattle
Hydraulic Engineering Mr. Bennett has experience with a wide variety of
hydraulic modeling projects. He conducted HEC-RAS modeling for the
Sammamish River habitat restoration effort in King County, WA. He has
developed both MIKE11 and HEC-RAS unsteady flow models for the
Tillamook Bay and Estuary Study. The three river system consisted of
approximately 80 miles of 40 different river and overbank branches, upstream flow
hydrographs, downstream tide hydrographs, and local inflows along the river
reaches.
Mr. Bennett has managed or been the lead hydraulic engineer for numerous FEMA
flood insurance studies (FIS) in Washington, Oregon, and Idaho. His current or
prior studies include the Umatilla River, OR, the Cities of Heppner, Lexington, and
Ione, in Morrow County, OR, the City of Seaside and Clatsop County, OR, the
leveed, multiple reach South Fork Coeur d’Alene system near Kellogg, ID, and
the tidally influenced Snohomish River and Slough system, in Snohomish
County, WA. He has provided technical expertise for the Canyon County FIS,
ID, and Chester Creek FIS, WA.
Mr. Bennett’s other hydraulic modeling experience includes performing a
feasibility study for the removal of the John Day Dam on a 76-mile long
section of the Columbia River, providing technical assistance developing HECRAS models of the Tehama-Colusa Canal, CA, and assessing bridge hydraulics
and scour potential utilizing HEC-RAS at over 100 bridges throughout the
Pacific Northwest. He has constructed a 2-dimensional RMA2 model of the
Marsh Street Bridge in San Luis Obispo, CA, for analyzing proposed channel
modifications and in-channel structures, and examined the upper Snohomish
River using a RMA2 model and SMS. He modeled proposed habitat
restoration projects on the Green River in King County, WA with HEC-RAS.
He also has application experience with the ArcView® GIS pre- and postprocessing capabilities of HEC-GeoRAS. Mr. Bennett has lectured for both
steady and unsteady HEC-RAS training courses across the nation, for
organizations including ASCE and the National Highway Institute, based on
his experience and knowledge of the software.
Hydrologic Engineering Mr. Bennett has conducted a range of both large
and small scale hydrologic studies. He led an HEC-HMS study which included
rain-on-snow effects for the Willow Creek Lake Watershed near Heppner, OR.
He has managed the development of HEC-HMS and CWMS models for the
8,000 square mile Muskingum Basin, OH. He conducted HEC-HMS analyses
for the Mesquite Regional Landfill, CA.
Todd H. Bennett, P.E.
He has provided technical guidance and HEC-HMS model development assistance for the 12,000 square
mile Kanawha Basin in VA, WV, and NC, for the Big Bayou Meto Watershed, AR, with over 300
subbasins, and for the wetland restoration study of the Devils Lake Watershed, ND. He has performed
technical review and evaluation of HEC-1 models. Mr. Bennett has developed and presented a three-day
HEC-HMS training course, conducted Beta testing of HEC-HMS for the U.S. Army Corps Hydrologic
Engineering Center (HEC), and assisted HEC with their HMS training classes. He has application
experience with the ArcView® GIS pre- and post-processing capabilities of HEC-GeoHMS.
Reservoir and Water Quality Modeling Mr. Bennett has been involved with a number of reservoir
and water quality modeling projects. He has managed or provided technical modeling expertise for
several CE-QUAL-W2 models including the Rocky Reach Dam and Lake Entiat Reservoir on the
Columbia River, WA, and several reservoirs in Oregon including Green Peter, Foster, Hills Creek,
Lookout Point, and Dexter. He led the Muskingum watershed HEC-ResSim modeling effort of seventeen
wet or dry dams with a variety of outlet structures including caterpillar, sluice, and tainter gates, morning
glory intake structures, and uncontrolled spillways
Mr. Bennett’s additional experience at WEST includes determining sediment erosion loads in developing
watersheds. He has evaluated water quality as part of the Environmental Impact Statement for the
Federal Energy Regulatory Commission (FERC) relicensing of Idaho Power’s Bliss, Upper Salmon Falls,
Lower Salmon Falls, and Shoshone Falls hydroelectric facilities on the Snake River in Idaho, and for the
Holyoke Hydroelectric Project, MA. He has modeled and assessed current and future wastewater
treatment plant loads in the Okanogan Watershed in Okanogan County, WA using QUAL2E.
Mr. Bennett has also further developed his hydraulic and hydrologic modeling skills while being
employed at the U.S. Army Corps of Engineers Hydrologic Engineering Center in Davis, CA, where the
suite of HEC models are developed. While at HEC, he worked on the design and implementation of the
continuous soil moisture accounting algorithm for HEC-HMS. His work included model testing, writing
functional specification documentation for computer model coding, and developing and presenting model
concepts for training courses. Mr. Bennett received training in the suite of HEC software programs
including HEC-HMS, HEC-RAS, UNET, HEC-DSS, and HEC-FFA.
Mr. Bennett’s previous work experience also includes over 3 years with the King County Surface Water
Management Division in Seattle, WA (now the Water and Land Resources Division). His work there
included modeling the Green River floodplain with HEC-2 and modeling water quality loads to lakes and
rivers in King County watersheds. Additionally, Mr. Bennett designed and implemented temperature
monitoring programs for salmonid habitat in the May Creek Watershed, assessed salmonid populations
throughout King County, and worked on the planning and design of salmonid habitat restoration projects
in the Green River Basin.
INSTRUCTING EXPERIENCE
HEC-RAS
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ASCE Continuing Education Class, Cincinnati, OH, September 2005
ASCE Continuing Education Class, Kansas City, MO, February 2005
ASCE Continuing Education Class, Boston, MA, November 2004
ASCE Continuing Education Class, Seattle, WA, October 2004
Environmental Health Administration, Washington D.C., September 2004
King County , Water and Land Resources Division, Seattle WA, April 2004
ASCE Continuing Education Class, Denver, CO, February 2004
ASCE Continuing Education Class, San Antonio, TX, October 2003
ASCE Continuing Education Class, Sacramento, CA, September 2003
Todd H. Bennett, P.E.
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ASCE Continuing Education Class, Atlanta, GA, January 2003
Caltrans, Sacramento, CA, December 2002
Jacksonville District, U.S. Army Corps of Engineers, FL, August 2002
S&B Infrastructure, McAllen, TX, February 2001
ASCE Continuing Education Class, Raleigh, NC, December 2000
Iowa Department of Transportation, Ames, IA, November 1999
Fort Richardson Joint Regional Environmental Training Center, Anchorage, AK, October 1999
ASCE Continuing Education Class, Seattle, WA, August 1999
HEC-HMS
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Introduction to HMS, University of Oregon, Corvallis, Oregon, May 2002
Advanced HMS, Hydrologic Engineering Center, Davis, California, April 2002
Advanced HMS, U.S. Army Corps of Engineers, St. Paul District, October 2001
Advanced HMS, Hydrologic Engineering Center, Davis, California, August 2001
Basic HMS, Summit Engineering, Reno, Nevada, November 2000
Basic HMS, Camp Pendleton Marine Corps Base, California, April 2000
Basic HMS, US Army Corps of Engineers, Nashville District, Tennessee, March 1998
TRAINING
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BASINS/HSPF Workshop, EPA and AquaTerra Consultants
Corps Water Management System (CWMS), U.S. Army Corps of Engineers Hydrologic
Engineering Center
Advanced HEC-HMS, U. S. Army Corps of Engineers Hydrologic Engineering Center
Unsteady Flow Analysis for HEC-RAS, U.S. Army Corps of Engineers Hydrologic Engineering
Center
Advanced HEC-RAS, U. S. Army Corps of Engineers Hydrologic Engineering Center
HEC-HMS, U.S. Army Corps of Engineers Hydrologic Engineering Center
HEC-RAS, U.S. Army Corps of Engineers Hydrologic Engineering Center
UNET, U.S. Army Corps of Engineers Hydrologic Engineering Center
MIKE11, U.S. Army Corps of Engineers, Portland District
HEC-6, WEST Consultants
HEC-2, King County Surface Water Management
BIBLIOGRAPHY
Bennett, Todd, Raymond Walton, Henry Hu, and Steven Hays. “Rocky Reach Dam Temperature
Modeling of Reservoir and Pre-Project Conditions”, Extended Abstract Proceedings of the American
Water Resources Association 2005 Annual Conference, Cleve Steward, ed., Seattle, WA, November 710, 2005.
Hu, Henry, Todd Bennett, Kenneth Puhn, and Joseph Weber. “Some Innovative Approaches for
Estimating Base Flood Discharges”, Extended Abstract Proceedings of the American Water Resources
Association 2005 Annual Conference, Cleve Steward, ed., Seattle, WA, November 7-10, 2005.
Bennett, Todd H., Raymond Walton, Peter Dickerson, and John Howard. “Comparison of HEC-RAS and
MIKE11 Unsteady Flow Modeling for the Tillamook Valley”, published for the ASCE World Water
and Environmental Resources Congress, Salt Lake City, UT, June 2004.
Todd H. Bennett, P.E.
Bennett, Todd H., Alan Donner, Dan Eggers, and Kenneth Puhn. “Challenges of Developing a Rain-onSnow Grid-Based Hydrologic Model for the Willow Creek Watershed, Oregon”, published for the
EWRI World Water and Environmental Congress, Philadelphia, PA, June 2003.
Bennett, Todd H., Raymond Walton, Larry Basich, and Wayne Wagner. “Unsteady Flow Models for
Floodplain Studies”, published for the EWRI World Water and Environmental Resources Conference,
Orlando, FL, May 2001.
Bennett, Todd H. “Continuous Soil Moisture Accounting in the Hydrologic Engineering Center
Hydrologic Modeling System (HEC-HMS)”, published for the ASCE Joint Conference on Water
Resources Engineering and Water Resources Planning and Management, Minneapolis, MN, July 2000.
Bennett, Todd H. “Development and Application of a Continuous Soil Moisture Accounting Algorithm
for the Hydrologic Engineering Center Hydrologic Modeling System (HEC-HMS)”. Master thesis,
University of California at Davis, 1998.