Thomas R. Grindeland, P.E.
Senior Engineer
Mr. Grindeland is a registered professional engineer with over 23 years of
experience in water resources and hydraulic engineering. His primary areas of
technical expertise are hydrology, hydraulics, geomorphology, and sediment
transport. He has used his skills in projects involving the characterization of
baseline environmental conditions, delineation of flood hazards, development of
management alternatives for fluvial systems, hydrologic and hydraulic engineering
design, environmental impact assessment and mitigation, permitting, and litigation
support. Most of the projects conducted by Mr. Grindeland have required
extensive use of computer modeling.
Registration
Professional Civil Engineer
Washington No. 32644
Oregon No. 59786PE
Idaho No. 7632
Colorado No. 24029
Education
M.S. (Civil Engineering)
Colorado State University, Ft.
Collins
B.S. (Civil Engineering)
University of Massachusetts,
Amherst
Professional Societies
American Society of Civil
Engineers
Mr. Grindeland’s experience includes hydrologic analyses such as determinations
of probable maximum floods, peak flow flood-frequency relationships, flow
duration, water supply, water budgets, and water quality. He is practiced in
deterministic, empirical, and stochastic hydrologic analytical techniques. He has
conducted hydrology studies for urban, rural, mountainous, and desert settings. He
is experienced in watershed modeling, statistical analysis of gage data, and
regional hydrologic methods. He is well acquainted with standard hydrologic
analysis methods and most hydrologic computer models.
Mr. Grindeland’s hydraulic analysis experience includes flood insurance studies,
dam-break flood studies, channel capacity analyses, bridge and channel designs,
spillway adequacy evaluations, spillway designs, mud/debris flow hazard
delineation, and local drainage plans. He is thoroughly experienced in the
application of 1- and 2-dimensional hydraulic models. His experience includes
dozens of studies involving the delineation of flood plains and the evaluation of
potential flood hazards. He is experienced in all aspects of riverine Flood
Insurance Studies and the procedures of the Federal Emergency Management
Agency (FEMA).
Mr. Grindeland has extensive experience in evaluating the stability of fluvial
systems. He has conducted erosion and sedimentation studies along dozens of
watercourses throughout the United States and internationally. This includes both
qualitative geomorphic assessments and quantitative engineering studies. He is
well experienced in the application of sophisticated hydraulic and sediment-routing
computer models for channel aggradation/degradation analyses, design of stable
channels, bank protection design, hydraulic structure stability evaluations and
erosion protection design, reservoir sedimentation studies, and mud/debris flow
hazard delineation. Mr. Grindeland has used his sediment transport analysis skills
in the development and evaluation of alternative river management plans,
preparation of environmental impact reports, designation of channel migration
zones, development of erosion or sedimentation protection designs for hydraulic
structures, and preparation of licensing and permit applications.
Mr. Grindeland has conducted numerous projects to characterize watershed
resources and develop management plans for objectives of sustainable forestry,
water supply, water quality protection, erosion/sedimentation control, and
protection or enhancement of fisheries and wildlife habitat. He is well-experienced
in managing inter-disciplinary assessments of environmental impacts and
developing workable management plans. Mr. Grindeland is experienced in
designing and constructing stream channel stabilization and fisheries habitat
restoration projects that were identified as part of watershed management plans.
Thomas R. Grindeland, P.E.
TRAINING
 Expert Witness Short Course; U.S. Fish and Wildlife Service; 1988
 Mud and Debris Flow Modeling Using FLO-2D; Colorado State University; 1997
 HEC-RAS; WEST Consultants, Inc; 1999
 HEC-6; Mobile Boundary Hydraulics, Inc; 1999
 Stream Instability and Bridge Scour Counter Measures Short Course; Seventh Federal
Interagency Sedimentation Conference; 2001
PROFESSIONAL INSTRUCTION
 Co-instructor for computer workshop: “How to use the Hydrologic Engineering Center’s River
Analysis System HEC-RAS.” Presented by the American Society of Civil Engineers, Las Vegas,
NV. April 12-14, 2000.
 Co-instructor for computer workshop: “How to use the Hydrologic Engineering Center’s River
Analysis System HEC-RAS.” Presented by the American Society of Civil Engineers, Raleigh,
NC. December 6-8, 2000.
 Co-instructor for short course and computer workshop: “Hydraulic Engineering Training.”
Presented in association with the Washington State Department of Natural Resources. The Dalles,
OR. April 16-20, 2001.
 Instructor for basic principles and flow in closed conduits lecture of the “Professional Engineer
(Civil) License Seminar.” Presented by Continuing Professional Engineering Education, Inc.
Lake Washington Technical College, Kirkland, WA. March 9, 2002.
EXPANDED EXPERIENCE BY DISCIPLINE:
Computer Modeling
Computer models with which Mr. Grindeland is familiar and has applied include HEC-2, HEC-RAS,
FLO-2D, HEC-3, HEC-5, HEC-6, HEC-2SR, SAM, HEC-1, SWMM, WSP-2, and TR-20. He has
assisted in the conduct of training courses on computer modeling of backwater profiles and dam-break
floods. Mr. Grindeland has participated in the development and application of numerous custom
computer models pertaining to the areas of hydrology, hydraulics, and sediment transport. Applications
have included rainfall/runoff simulation, sediment routing by size fraction, water balances, and frequency
of both peak and low flows.
Dam Safety
Mr. Grindeland has experience in most aspects of dam and reservoir analysis and design. He has
conducted several hydrologic studies to determine the adequacy of a dam for passing its design flood and
to investigate the safety of existing dams. His experience includes coordinating and conducting drilling
programs to collect samples from earthfill dams, analyzing potential dam break floods and preparing
emergency preparedness plans, conducting dam safety inspections and developing inspection plans and
monitoring programs, and conducting studies to evaluate alternatives for repairing and rehabilitating
existing dams. He has also conducted studies to develop and evaluate alternatives for increasing the
usable storage in water supply reservoirs and assisted in the preparation of several FERC relicensing
applications for hydroelectric projects.
Hydraulics
Mr. Grindeland has extensive experience in analyzing, characterizing, and solving problems involving
open-channel hydraulics. He is experienced in the application of both one- and two-dimensional
hydraulic computer programs. He is well acquainted with the hydraulic analysis and design standards of
the U.S. Army Corps of Engineers (USACE) and Federal Highway Administration (FHWA) and with the
Thomas R. Grindeland, P.E.
regulations for floodplain management and flood-hazard identification used by the Federal Emergency
Management Agency (FEMA). He is also familiar with the policy and procedures used by FEMA in
administering flood-hazard map revisions.
Hydraulic Design
Mr. Grindeland has conducted a wide range of water resources engineering investigations and prepared
designs based on them. His design responsibilities have included project management, conceptual design,
evaluation of alternatives, preparation of construction drawings, estimation of construction costs, and
development of construction specifications and bid documents. Hydraulic design studies for which he has
been responsible include local drainage plans, major flood controls, channels, dam spillways, municipal
water distribution systems, sanitary sewers, sedimentation ponds, erosion revetments, bridge piers and
abutments, scour countermeasures for bridges, and stream channel and fisheries habitat restoration.
As the lead project engineer for a reservoir enlargement project, Mr. Grindeland was responsible for
conducting the hydrologic and hydraulic analysis of alternative rehabilitation schemes, identification of
conceptual designs, and final design of the recommended alternative. The final construction design
involved a 240-foot-wide labyrinth-type spillway with 12 cycles that are 8 feet in height. The spillway
design accommodates a Probable Maximum Flood (PMF) peak discharge of about 26,000 cfs.
Water Supply
Water supply investigations conducted by Mr. Grindeland include planning, preliminary design, and cost
estimating for water transmission, treatment, storage, and distribution facilities. He has prepared
numerous planning-level designs and cost estimates for water supply and wastewater collection/disposal
infrastructure requirements.
Technical Support of Litigation
Mr. Grindeland prepared technical analyses for the City of Fort Collins to define the hydraulic impacts of
a bicycle path on the conditions of flooding and channel instability along the Cache la Poudre River in the
City of Fort Collins and Larimer County, Colorado. The technical analyses were conducted in
anticipation of litigation.
Negotiations between the involved parties resulted in an out-of-court
settlement.
He conducted technical analyses and provided expert testimony on behalf of home owners along Uvas
Creek in the city of Gilroy and Santa Clara County, California. Opinions were provided about flood
hazard conditions and the technical adequacy of existing flood insurance mapping in the study area. An
out-of-court settlement was reached between the parties.
For the State of Colorado Department of Law, Mr. Grindeland reviewed trial testimony and technical
exhibits associated with the National Forests Reserved Rights claim in Water Division 1 of the State of
Colorado.
Mr Grindeland provided technical support for preparation of water rights claims in Idaho and Oregon.
Mr. Grindeland=s work included application of USFWS Instream Flow Incremental Methodology (IFIM)
hydraulic models (IFG4, MANSQ, WSP), and development of water budgets to assess the impacts of land
use change and irrigation diversions on stream flow.
Thomas R. Grindeland, P.E.
PROJECT EXPERIENCE
Hydrologic and Hydraulic Studies
 Development of hydrologic and hydraulic models for the Kanawha River Basin, WV
 Independent Technical Review of Hydrology for the Chehalis Flood Damage Reduction
Study, Lewis County, Washington
 Level I Technical Assessment for Water Resource Inventory Areas (WRIAs) 27 & 28, Lower
Columbia Fish Recovery Board, Washington
 Probable Maximum Flood Analysis, Silver Lake Dam, Boulder County, Colorado
 Hydrologic and Hydraulic Analysis for a Conditional Letter of Map Revision (CLOMR),
Georgia Avenue Wash, Boulder City, Nevada
 Preliminary Data Collection and Hydrologic, Hydraulic, and Geomorphic Analysis for the
Hickahala/Senatobia Creek Watershed, Yazoo River Basin, Mississippi
 Hydrologic and Hydraulic Analysis, Conceptual Flood Control Design, San Sevaine Alluvial
Fan, San Bernardino County, California
 Hydrologic Analysis of the Coldwater River Watershed, Yazoo River Basin, Mississippi
 Fossil Creek Master Drainageway Planning Study, Fort Collins, Colorado
 Rillito River Corridor Planning Study, Tucson, Arizona
 Site Drainage Plan for the Transport Facility, Fort Collins, Colorado
 Analysis of Flood Level at Trojan Nuclear Power Plant Associated with a Hypothetical
Failure of the Spirit Lake Blockage, Mount St. Helens, Washington
 Update and Verification of Hydraulic Computer Models for Maline Creek and its Tributaries,
St. Louis County, Missouri
 Hydraulic Study of the Lake Hodgson Feeder Canal, Ohio
 Development of a Theoretical Rating Curve for the Highway 79 Gage of the Salt River,
Missouri Unnamed Wash Alluvial Fan Hydraulic Study, Clark County, Nevada
 Streamflow Depletion Analysis for 62 Watersheds in Oregon
 Klamath and Sycan Marsh Studies, Oregon
 Clark Fork River Hydrology Model, Montana
Floodplain and Floodway Delineation Studies
 Morro Creek Flood Hazard Evaluation, City of Morro Bay, CA
 Letter of Map Revision (LOMR), East Fork Lewis River, Clark County, Washington
 Flood Insurance Study for the Town of Rangely, Colorado
 Flood Insurance Study for the City of Rifle, Colorado
 Flood Insurance Study for Garfield County, Colorado
 Flood Insurance Studies for City of Jackson and Teton County, Wyoming
 Flood Insurance Studies for the Town of Estes Park and Larimer County, Colorado
 Flood Insurance Studies for Lake County and Flathead County, Montana
 Conditional Letter of Map Revision (CLOMR), East Etiwanda/San Sevaine Alluvial Fans,
San Bernardino County, California
 Flood Insurance Studies for the City of Fort Collins, Larimer County, and Weld County,
Colorado
 Flood Insurance Study for the Town of Telluride, San Miguel County, Colorado
 Letter of Map Revision (LOMR), Cache la Poudre River, Fort Collins, Colorado
Thomas R. Grindeland, P.E.
Sedimentation and Erosion
 Channel Stability Assessment for Flood Reduction Improvements, Swamp Creek, City of
Kenmore, WA
 Bank Stabilization Design for the Tin Shed Site, Snake River, Oregon
 Mount St. Helens Engineering Reanalysis Hydrologic, Hydraulic, and Sedimentation
Analyses, Toutle and Cowlitz Rivers, Washington
 Horseshoe Bend Hydroelectric Project; Environmental Assessment for FERC License
Amendment; Payette River, Idaho
 Avulsion Potential Analysis for the Samish River in the Vicinity of the Belleville Mine
Expansion Project, Skagit County, WA
 Fanno Creek Bioengineering Bank Stabilization Project, OR
 Hydraulic Analysis of Sunnybrook East Extension Project, Mt. Scott Creek, Clackamas
County, OR
 Farewell Bend Bank Erosion Stabilization Project, Snake River, Oregon
 Bolivia-Brasil Pipeline Project; Rio Grande Crossing Study; Santa Cruz, Bolivia
 Cumulative Impacts Assessment, Upper Mississippi River System
 Bridge Hydraulics and Scour Impact Assessment for Seismic Retrofits, California
 Pipeline Scour Evaluations, Cross-Cascades Pipeline, Woodinville to Pascoe, Washington
 Stream Effects Study for SEA-TAC Airport, Des Moines Creek, City of Des Moines,
Washington
 Design of pier and abutment erosion protection, Miller River Bridge Rehabilitation, King
County, Washington
 Sediment-Transport Study of Sowashee Creek Flood-Control Alternatives, Lauderdale
County, Mississippi
 Soil Piping Study in the Vicinity of Pueblo Bonito, Chaco Culture National Historical Park,
New Mexico
 Aggradation/Degradation Study of San Juan & Trabuco Creeks, Orange County, California
 Qualitative Erosion and Sedimentation Investigation of Maline Creek and its Tributaries, City
and County of St. Louis, Missouri
 Debris and Sedimentation Assessment for a Potential Reservoir Site Near Thistle, Utah
 Aggradation/Degradation Analysis of Piedras Marcadas Arroyo, Bernalillo County, New
Mexico
 Geomorphic Analysis of Cache Creek, Yolo County, California
 Hydraulic and Sediment Transport Evaluation of the Teichert Aggregate Mining Plan for
Cache Creek, Yolo County, California
 Fluvial Study of the Santa Clara River and its Tributaries, Los Angeles County, California
 Detailed Field Data Collection and Sediment Continuity Analysis for the Hickahala/
Senatobia Watershed, Yazoo River Basin, Mississippi
 Quantitative Analysis of Baseline Conditions for the Hickahala/Senatobia Watershed, Yazoo
River Basin, Mississippi
 Erosion Control project. Results of the study were used in subsequent studies to develop
alternative erosion control plans for the watershed.
 Elwha River Fluvial System Analysis, Washington
 Qualitative Geomorphic Analysis of Sediment Transport Conditions in Support of FERC
Relicensing for Kern River No. 3 Hydroelectric Project, Kern County, California
 Qualitative Geomorphic Analysis of Sediment Transport Conditions in Support of FERC
Relicensing of the Kaweah River Hydroelectric Projects Nos. 1, 2, and 3, Sequoia National
Park and Sequoia National Forest, California
 Data Summary Report for the Proposed Canada Reservoir Diversion Site Sedimentation
Thomas R. Grindeland, P.E.
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Study, Carmel River, Monterey County, California
Detailed Field Investigation and Geomorphic Study, Coldwater River and Tributaries,
Coldwater River Watershed, Mississippi
Qualitative Geomorphic Sediment-Transport Evaluation and Groundwater Quality
Assessment, Kern River No. 1 Hydroelectric Project Relicensing Application, Kern County,
California
Idaho Instream Flow Studies, Bureau of Indian Affairs
Upper Clark Fork River Sediment Study, Montana
Hydraulic Structure Design Studies
 Hydraulic analysis of Chester Morse Lake outlet channel, Seattle Public Utilities
 Scour Assessment for Proposed Bridge, Buckland River, City of Buckland, Northwest Artic
Borough, Alaska
 Hydraulic Design and Scour Evaluation for Pine Creek Bridge Replacement Project, Walla
Walla County, Washington
 Hydraulic Design and Scour Evaluation for Valley Grove Road Bridge Replacement Project,
Dry Creek, Walla Walla County, Washington
 Hydraulic Design and Scour Evaluation for Front Street Bridge Replacement Project,
Pleasant Valley Creek, City of St. John, Whitman County, Washington
 Hydraulic Design and Scour Evaluation for Marcola Road Bridge Replacement Project,
Mohawk River, Lane County, Oregon
 Bridge Hydraulics and Scour Assessment for Oglesby Road, Abernethy Creek, Clackamas
County, Oregon
 Bridge Hydraulics and Scour Assessment for Washington Street, Abernethy Creek, City of
Oregon City, Oregon
 Culvert Replacement Designs, Union County, Oregon
 Tom Music Bridge Replacement Design, Hydraulics and Scour Assessment, Cispus River,
Gifford Pinchot National Forest, Lewis County, Washington
 Flood and Debris Protection, Skagit River Span, Skagit County, Washington
 Railroad Bridge Erosion Protection, South Fork Toutle River, Cowlitz County, Washington
 Culvert Replacement Design, South Fork Sucker Creek, Cowlitz County, Washington
 Bridge Replacement, Eightmile Creek and Japanese Hollow, Wasco County, Oregon
 Conceptual Design of Channelization Alternatives for Planning Area 13, San Diego Creek,
Orange County, California
 Boulder Reservoir Spillway Design, Boulder County, Colorado
 Channel Design for the Horse Creek Abandoned Mine Reclamation Project, Wyoming
 Development of Erosion Control Plans for the Upper Hickahala/Senatobia Watershed, Yazoo
River Basin, Mississippi
 Hydraulic and Erosion-Protection Design, Hanging Lake Viaduct, Interstate 70, Glenwood
Canyon, Garfield County, Colorado
 Preparation of Plans to Provide Flood Control in the Vicinity of the Arkabutla Reservoir
Boundary along Hickahala and Senatobia Creeks, Yazoo River Basin, Mississippi
 Development of Interim Sedimentation-Control Measures for Calleguas Creek, Ventura
County, California
 Hydraulic Stability Assessment of Articulated Concrete Block Revetment for Channel Bank
Erosion Protection, Santa Gertrudis and Tucalota Creeks, Rancho California, California
 Bridge Hydraulics Study Report, Bridge No. LR103-15.0-S14, Laramie River, Larimer
County, Colorado
Thomas R. Grindeland, P.E.

Fisheries Habitat Enhancement Project, East Fork Salmon River, Idaho
Environmental Impact Studies/Permitting
 Horseshoe Bend Hydroelectric Project; Environmental Assessment for FERC License
Amendment; Payette River, Idaho
 Technical review of flooding section of Tollgate Master Plan Environmental Impact
Statement, South Fork Snoqualmie River, North Bend, WA
 Geomorphic Analysis of East Fork Lewis River for the Daybreak Mine Expansion and
Habitat Enhancement Project Habitat Conservation Plan, Clark County, Washington
 Section 404 permitting, Siding Extension Projects, Stampede Pass Line, Washington
 Scour Evaluations, Cross Cascades Pipeline, Washington
 Hydraulic, Erosion, and Sedimentation Impact Analysis Associated with the Proposed Azure
Hydroelectric Project, Colorado River, Grand County, Colorado
 Environmental Impact Analysis Related to Issues of River Hydrology, Beach Sand Supply,
and Resource Depletion of Proposed Sand and Gravel Extraction, Santa Clara River, Ventura
County, California
 Integrated Natural Resource Management Plans, Hawaii
 Sustained Yield Plans, Northern California
Environmental Compliance
 Pollution Prevention Planning, Spokane Satellite Tracking Station, Washington
 Pollution Prevention Planning, Fairchild AFB, Alaska
 Pollution Prevention Planning, Hickam AFB, Hawaii
 Pollution Prevention Planning, Kunsan AFS, S. Korea
 Pollution Prevention Planning, Air National Guard Bases, Arizona, California, and
Washington
 Industrial Wastewater/Sanitary/Storm water Influent Sources Investigation, Cheyenne
Mountain AFB, Colorado
 Environmental Compliance Support, Hickam AFB, Hawaii
Habitat Restoration
 Little Anderson Creek Culvert Replacement Project, Kitsap County, Washington
 Green River Supplemental Spawning Gravel Nourishment Analysis, Seattle District Corps of
Engineers, Seattle, WA.
 Green River Restoration Study, King County, Washington
 John Day Dam Drawdown Study Tributary Sedimentation Evaluation, Columbia River,
Portland District Corps of Engineers, Portland, OR.
 Independent Technical Review of Hydraulic Design for Goldsborough Creek Dam Removal
Project, Mason County, Washington
 Geomorphic Analysis of the East Fork Lewis River for the Daybreak Mine Expansion and
Habitat Enhancement Project, Clark County, Washington
 Kinkade Island Levee Removal, Dungeness River, Clallam County, Washington
Dam Safety
 Flood Inundation Analysis for a Possible Dam Break at Silver Lake and Boulder Reservoirs,
Boulder County, Colorado
 Emergency Preparedness Plan, Boulder Reservoir Dam, Boulder County, Colorado
 Inspection and Monitoring Program for Dams in the City of Boulder Watershed, Boulder
County, Colorado
Thomas R. Grindeland, P.E.
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Dam Safety Evaluation, Akungtien Reservoir, Republic of China (Taiwan)
Handbook of Dam Safety Inspection Procedures, Taiwan Department of Water Resources
Water Supply
 Master Plan for the City of Boulder's Mountain Reservoir Water Supply System, Boulder
County, Colorado
 Water Supply Assessment, La Liebre Valley Ranch Residential Development, Antelope
Valley, California
Water Quality
 Horseshoe Bend Hydroelectric Project; Environmental Assessment for FERC License
Amendment; Payette River, Idaho
 Storm Water Treatment and Discharge Design, Fairchild AFB, Washington
 Industrial Wastewater/Sanitary/Storm water Influent Sources Investigation, Environmental
Compliance Assessment and Testing, Cheyenne Mountain AFB, Colorado
 Industrial Wastewater Survey, Hickam AFB, Hawaii
Litigation Support
 Wynoochee River Bridge Replacement Litigation, Washington
 Bisceglia vs. City of Fort Collins, Poudre River Bike Path Litigation, Colorado
 Uvas Creek Flood of 1986, Santa Clara County, California
 National Forest Reserved Water Rights Study, Colorado
SELECTED PUBLICATIONS AND PRESENTATIONS
Simons, D.B., R.M. Li, W.T. Fullerton, and T.R. Grindeland. 1981. Storm Water and Sediment Runoff
Simulation for a System of Multiple Watersheds, Volume II: Sediment Routing and Yield. Prepared by
Colorado State University for USDA Forest Service, Rocky Mountain Forest and Range Experiment
Station, Flagstaff, Arizona.
Li, R.M., R.A. Mussetter, and T.R. Grindeland. 1988. Sediment-Routing Model HEC-2SR. in Twelve
Selected Computer Stream Sedimentation Models Developed In the United States. Prepared for
Subcommittee on Sedimentation, Interagency Advisory Committee on Water Data. Federal Energy
Regulatory Commission, Washington, D.C.
Grindeland, T.R., J.S. O'Brien, and R.M. Li. 1990. Flood-hazard delineation on alluvial fans, in Proc.
Int. Symp. Hydraulics/Hydrology of Arid Lands (H2AL) (Richard H. French, ed.). American Society of
Civil Engineers, San Diego, California.
Walton, R., J.B. Bradley, and T.R. Grindeland. 1997. 1-D or 2-D Hydraulic Models? Some Washington
State Experiences, presented at Association of State Floodplain Managers 21st Annual Conference.
Sigurdur M. Gardarsson, James C. Knox, Thomas R. Grindeland, Hans R. Hadley, “Geomorphic Analysis
of the Upper Mississippi River Basin”, 1999, Proceedings of the American Society of Civil Engineers
(ASCE) International Water Resources Engineering Conference, Seattle, WA.
Thomas R. Grindeland, Hans R. Hadley, Anand Raman. 2000, “Dam Removal Sedimentation
Evaluation”, Proceedings of the American Society of Engineers (ASCE) Joint Conference on Water
Resources Engineering and Water Resources Planning & Management, Minneapolis, MN.
Thomas R. Grindeland, P.E.
Jeffrey B. Bradley, Thomas R. Grindeland, and Hans R. Hadley. Sediment Supply from Mount St. Helens
– 20 Years Later. Proceedings of the Seventh Interagency Sedimentation Conference, March 25-29,
2001, Reno, NV.