Hydrology Expert Witnesses
Hydrology expert witnesses and consultants listed here may be able to form expert opinions, draft expert witness reports, provide expert witness testimony at deposition and/or trial as or serve as consulting (non-testifying) experts on hydrology. The hydrology expert witness listings on this page are typically from fields/areas of expertise such as: Civil Engineering, Construction Defects, Engineering, Environmental, Environmental Engineering, Geotechnical Engineering, Hydrology, Mining, and Structural Engineering.
Yasser M. Abdelhamid, PhD
Construction Defect/Geotechnical Expert Witness
Bryant Consultants
California
Geotechnical Engineering, Construction Defects
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Civil Engineering, Expansive Soil, Foundation Analysis and Design, Settlement, Heave, Pavement, Retaining Walls, Slope Stability, Numerical Modeling, Seepage, Drainage, Erosion, Hydrology, Seismic, Earthquake Engineering, Laboratory Testing, Structural Engineering, Construction Defects
Dr. Abdelhamid has been designated as an expert witness for many litigated cases. Dr. Abdelhamid is heavily involved in performing forensic geotechnical and geophysical investigations for several problematic foundations, pavements, retaining walls and slopes. He devises protocols for geotechnical and geophysical testing, in-situ long-term monitoring, lab testing and analysis. He is also heavily involved in preparing and reviewing proposals and expert reports for geotechnical exploration and litigated and non-litigated forensic projects. Dr. Abdelhamid is responsible for meeting clients during the proposal phase, the investigation phase and after releasing the final report to ensure client satisfaction. Dr. Abdelhamid has performed work at wide variety of forensic projects. He evaluated numerous residential buildings from single family house to a whole subdivision. Dr. Abdelhamid also evaluated many commercial, school, hospital, garage buildings. He performed stability analysis for v...
Chad Ballard
Surface Water, Hydrology and Flood Expert
High Water Mark
California
Hydrology, Civil Engineering
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Floodplain, Flooding, Hydrology, River Hydrualics, Levee Breach, Dam Break/Failure, Stormwater, FEMA, Advanced Modeling, Storm Recreation, Erosion, Rainfall, Flood Forensics, Bridge Hydraulics, Water Resources
Mr. Chad Ballard is a licensed civil engineer (CA, TX, CO, WA) working in the water resources field, more specifically hydrology and hydraulics specializing in advanced hydraulic and hydrologic modeling, stormwater, and flood mitigation. In addition to a broad range of engineering skills, Mr. Ballard has helped hundreds of engineering firms all around the world apply hydraulic models to their projects. Mr. Ballard has taught undergraduate and graduate level courses in hydraulics and hydrology as an adjunct faculty member, as well as currently teaching professional continuing education courses for the new 2D numerical modeling tools such as HEC-RAS and SRH-2D.
Mr. Ballard is active in professional organizations including ASCE, EWRI and TFMA where he has served and is serving in various leadership positions at the state and national level. Chad is also a current volunteer member of the Region 3 State Flood Planning Group overseeing the Regional State Flood Plan development effort i...
David T Williams, PhD, PE, PH, CFM, CPESC, F.ASCE, D.WRE
DTW and Associates, Engineers, LLC
California
Civil Engineering, Hydrology
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floodplain flooding, hydrology, river hydraulics, stream bank protection, stream restoration, fluvial geomorphology, levees, erosion control, stream bank failure, erosion control plans, best management practices, FEMA floodplain studies
Dr. David Williams, PE (CO, AZ, CA, LA, MO, NM, TX, HI, MS, OR, WA) has over 45 years of experience in the water resources industry and is known for his contributions to the industry. He is also a recognized expert in sedimentation engineering and in developing innovative solutions to difficult hydraulic and hydrologic design problems in rivers and estuaries. Dr. Williams previously served as a two-time President of the International Erosion Control Association (IECA). He has served as chair of the American Society of Civil Engineers (ASCE) Technical Committees on Sedimentation, Computational Hydraulics, River Restoration, and Risk, Uncertainty and Probabilistic Approaches. He served as a committee member of ASTM A05.12 (Wire specifications) and on ASTM D18.25 (Erosion Control Products). While chair of the Federal Interagency Technical Committee on Sedimentation, he worked with hydraulic and sedimentation experts from the Federal Highway Administration, Bureau of Reclamation, U.S. ...
David T Williams, PhD, PE, PH, CFM, CPESC, F.ASCE, D.WRE
DTW and Associates, Engineers, LLC
Commerce City, Colorado
Civil Engineering, Hydrology
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floodplain flooding, hydrology, river hydraulics, stream bank protection, stream restoration, fluvial geomorphology, levees, erosion control, stream bank failure, erosion control plans, best management practices, FEMA floodplain studies
Dr. David Williams, PE (CO, AZ, CA, LA, MO, NM, TX, HI, MS, OR, WA) has over 45 years of experience in the water resources industry and is known for his contributions to the industry. He is also a recognized expert in sedimentation engineering and in developing innovative solutions to difficult hydraulic and hydrologic design problems in rivers and estuaries. Dr. Williams previously served as a two-time President of the International Erosion Control Association (IECA). He has served as chair of the American Society of Civil Engineers (ASCE) Technical Committees on Sedimentation, Computational Hydraulics, River Restoration, and Risk, Uncertainty and Probabilistic Approaches. He served as a committee member of ASTM A05.12 (Wire specifications) and on ASTM D18.25 (Erosion Control Products). While chair of the Federal Interagency Technical Committee on Sedimentation, he worked with hydraulic and sedimentation experts from the Federal Highway Administration, Bureau of Reclamation, U.S. ...
Christopher R Hanstad, P.E., CFM
Hanstad Engineering Services
Champaign, Illinois
Civil Engineering
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Floodway Violations, Floodplain Modeling, Flood Damage and Loss Assessment, Hydrology, Hydraulics, FEMA Floodplain Revisions, Drainage
Mr. Chris Hanstad has over 15 years of focused experience in floodplain analysis and evaluation of projects for compliance with the National Flood Insurance Program (NFIP) regulations. As a Licensed Professional Engineer (IL, IN, and WI) and Certified Floodplain Manager he has led the Illinois Letter of Map Revision (LOMR) program for 8 years from its inception to make determination decisions for floodplain revision requests. Based on rigorous floodplain modeling technical standard and NFIP regulation compliance, Mr. Hanstad has personally made determination decisions for hundreds of LOMR applications which result in revisions to FEMA floodplain maps.
Mr. Hanstad specializes in evaluating the flood risk impact of projects built in the floodplain on adjacent properties. He has made 7 floodway violation recommendations to FEMA and has provided litigation support for flooding resulting from a floodway violation. With in-depth knowledge of NFIP regulations and specialized technical...
John Hlinka, PE, M. ASCE
Benton, Kentucky
Structural Engineering, Civil Engineering
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civil, railroad, accident, cranes, failures, foundations, structures, drainage, culverts, washouts, hydrology, concrete pump trucks, corrosion, chemical, industrial, building codes, inspections, construction, OSHA Compliance, swimming pools
Mr. Hlinka has worked over 40 years in the Engineering, Procurement and Construction Management market with experience in numerous industries: Chemical, Oil Refinery, Pulp & Paper, Adhesives, Nuclear Power Generation, Nuclear Feed Stock, and Steel. His work has overlapped with residential and commercial industries. Throughout his career he has engineered and managed a myriad of projects in these industries and has provided leadership to the various companies in the capacities of: Site Manager, Design Manager, Project Manager, Construction Supervisor, and currently as President. Design engineering, analysis, and inspection experience includes structural steel, reinforced concrete, stone, masonry, wood, and stormwater drainage.
Timothy J. Mayotte, Ph.D., CPG, P.E.
Mayotte Design & Engineering
East Lansing, Michigan
Civil Engineering, Environmental Engineering
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Groundwater, Wastewater, Remediation, Bioremediation, Modeling, Stormwater, Hydrogeology, Hydrology, Geotechnical, Microbiology, Contamination, Geochemistry, Construction, Demolition, Home Inspection
Dr. TImothy Mayotte is President and CEO of Mayotte Design & Engineering, PC, a civil and environmental engineering design firm based in East Lansing, Michigan. Since 2003, MD&E has proved itself a highly responsive design, advocate and risk management partner for clients in the energy, automotive, commercial printing, textile, pharmaceutical, chemical, real estate, and legal industries. MD&E offers a variety of services, specializing in the design and engineering of treatment solutions for wastewater, groundwater, stormwater and contaminated soil, sediment and air.
Dr. Mayotte has assisted clientele across globe, having completed projects in: Alabama; Arizona; California; Colorado; Connecticut; Illinois; Indiana; Iowa; Kansas, Massachusetts; Michigan; Missouri, Mississippi; Nevada; New Jersey; New York; Ohio; Oregon; Tennessee; Texas; Vermont; Virginia; West Virginia; Washington, Wisconsin; Wyoming; British Columbia; Ontario; Quebec; Brazil; China; Czech Republic; Italy; and Mex...
Mark J. Vanarelli, PhD, PE, IntPE, PG, BCEE, F.ASCE
Geomechanics & Groundwater Expert
Carlsbad, New Mexico
Mining, Geotechnical Engineering
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Hydrogeology, Hydrology, Geological Engineering, Groundwater, Geology, Water Resources Engineering, Remediation Design, Hazardous Waste Management, Site Investigations, Mining Engineering, Tunnel Engineering, Geotechnical Engineering
I am a licensed Professional Engineer in mining, civil and geological engineering. I have over 35 years of experience in subsurface and surface analyses. I am an independent practitioner and Senior Subject Matter Expert for the US Department of Energy at the Carlsbad Field Office's (CBFO) Waste Isolation Pilot Plant (WIPP) in Carlsbad, New Mexico. I provide senior technical advice and recommendations to the CBFO Manager, Assistant Manager and Director, Facility Engineering Division, on matters pertaining to mining engineering, ground control, mine safety, geology/groundwater engineering, underground mine construction and drift, back and ribs maintenance, mine shaft and hoist construction and maintenance, surface mining facilities, and systems construction and maintenance, and input and coordinates with other CBFO staff.
I graduated with degrees in mining and geological engineering from the Colorado School of Mines which is ranked #1 in the world in mining and mineral engineering...
Chuck Dutill, PE, DFE
Hydrology and Environmental Engineering Expertise
Heritage Technical Services, Inc.
West Chester, Pennsylvania
Environmental, Engineering
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Hydrology, Stormwater Management, Sewers, Sewer Systems, Wastewater, Sanitary Sewage, Water, Septic Systems, Flooding, Groundwater, Hydrogeology, Drainage, Mold, Wells, Runoff, Backups, Wastewater Treatment, Utility, Construction, Maintenance
Nationwide experience as hydrologist, environmental engineer, and civil engineer, including for FOG/grease trap, design, contamination, pollution, sinkhole, grading, hydraulics, pumping, water quality, storm sewer, drinking water, water distribution, water treatment, dam, regulations, Standard of Care, waste management, erosion, soil, air quality, water main, detention, hazardous waste, spill, sedimentation, wetland, floodplain, toxicity, remediation, health and safety, modeling, odor, combined sewer, overflow, aquifer, hydraulic fracturing, hydroplaning, and metering.
Forensic cases for Mr. Dutill have comprised federal and state courts. As indicated in feedback from attorneys on expert witness cases, some of the strengths of Mr. Dutill include understandable guidance, responsiveness, timeliness, communication, effective report writing, strong testimony (including on cross), efficiency, organization, and assistance with framing case issues.
Approximately 45% of his cases have be...
Michael Sheleheda, P.E.
Civil & Environmental Consultants, Inc.
Monroeville, Pennsylvania
Civil Engineering, Geotechnical Engineering
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Stormwater, Erosion and Sediment Control, Hydrology, Landslides and Slope Stability, Foundations, Settlement, Retaining Walls, Geohazards, Pavement Evaluation and Remediation, Earthwork, Construction and Materials Testing, Americans with Disabilities Act (ADA) Accessibility
Mr. Sheleheda specializes in geotechnical and civil engineering. His experience includes providing geotechnical engineering design/expertise for all aspects of land development and construction. Projects have included establishing procedures for subsurface explorations, boring layout, soil sampling, and laboratory testing programs. Michael has authored geotechnical reports regarding deep, shallow, and specialty foundation construction for projects in the real estate, natural gas, manufacturing, mining and public client sectors. Also, he has investigated and provided remedial recommendations for landslides, carbonaceous (expansive) shale, retaining walls, karst, geohazards, and mine grouting/subsidence. His responsibilities have included preparing bid packages, authoring specifications, and construction level drawings, as well as preparing expert reports for the legal and insurance industries.
In addition, Michael has experience in the preparation of erosion and sediment control pla...
Yasser M. Abdelhamid, PhD
Construction Defect/Geotechnical Expert Witness
Bryant Consultants
Carrollton, Texas
Geotechnical Engineering, Construction Defects
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Civil Engineering, Expansive Soil, Foundation Analysis and Design, Settlement, Heave, Pavement, Retaining Walls, Slope Stability, Numerical Modeling, Seepage, Drainage, Erosion, Hydrology, Seismic, Earthquake Engineering, Laboratory Testing, Structural Engineering, Construction Defects
Dr. Abdelhamid has been designated as an expert witness for many litigated cases. Dr. Abdelhamid is heavily involved in performing forensic geotechnical and geophysical investigations for several problematic foundations, pavements, retaining walls and slopes. He devises protocols for geotechnical and geophysical testing, in-situ long-term monitoring, lab testing and analysis. He is also heavily involved in preparing and reviewing proposals and expert reports for geotechnical exploration and litigated and non-litigated forensic projects. Dr. Abdelhamid is responsible for meeting clients during the proposal phase, the investigation phase and after releasing the final report to ensure client satisfaction. Dr. Abdelhamid has performed work at wide variety of forensic projects. He evaluated numerous residential buildings from single family house to a whole subdivision. Dr. Abdelhamid also evaluated many commercial, school, hospital, garage buildings. He performed stability analysis for v...
Chad Ballard
Surface Water, Hydrology and Flood Expert
High Water Mark
Dallas, Texas
Hydrology, Civil Engineering
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Floodplain, Flooding, Hydrology, River Hydrualics, Levee Breach, Dam Break/Failure, Stormwater, FEMA, Advanced Modeling, Storm Recreation, Erosion, Rainfall, Flood Forensics, Bridge Hydraulics, Water Resources
Mr. Chad Ballard is a licensed civil engineer (CA, TX, CO, WA) working in the water resources field, more specifically hydrology and hydraulics specializing in advanced hydraulic and hydrologic modeling, stormwater, and flood mitigation. In addition to a broad range of engineering skills, Mr. Ballard has helped hundreds of engineering firms all around the world apply hydraulic models to their projects. Mr. Ballard has taught undergraduate and graduate level courses in hydraulics and hydrology as an adjunct faculty member, as well as currently teaching professional continuing education courses for the new 2D numerical modeling tools such as HEC-RAS and SRH-2D.
Mr. Ballard is active in professional organizations including ASCE, EWRI and TFMA where he has served and is serving in various leadership positions at the state and national level. Chad is also a current volunteer member of the Region 3 State Flood Planning Group overseeing the Regional State Flood Plan development effort i...
Jens Figlus, PhD
Bryant Consultants
Carrollton, Texas
Civil Engineering, Engineering
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Wave modeling, subsidence, scour, vessel wakes and propeller wash, Environmental fluid mechanics, Fluid-sediment-structure interactions, Coastal processes, Field measurements, Hydraulic engineering, Coastal protection, Hydrology, Sedimentation, Coastal Erosion
Jens Figlus is a coastal engineering expert with 12 years of experience. He works with Bryant on expert witness cases and projects related to sediment erosion, coastal flooding, water waves, fluid-soil-structure interactions, and issues related to ship-induced hydrodynamics, such as vessel wakes and propeller wash. His background is in applied coastal research and engineering, hydraulic engineering, and environmental fluid mechanics.
Dr. Figlus is an Associate Professor in the Ocean Engineering Department at Texas A&M University. He heads the Coastal Engineering Laboratory (CEL) on A&M’s Galveston Campus and is a distinguished partner with the A&M Institute for a Disaster Resilient Texas (IDRT).
His expertise includes field and laboratory measurements (piezo-electric, acoustic Doppler, sediment tracer, optical backscatter, laser anemometry, remote sensing) as well as process-based numerical modeling (CShore, XBeach, Delft3D, Funwave) related to nearshore and estuarine hydrodynamic...
David T Williams, PhD, PE, PH, CFM, CPESC, F.ASCE, D.WRE
DTW and Associates, Engineers, LLC
Texas
Civil Engineering, Hydrology
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floodplain flooding, hydrology, river hydraulics, stream bank protection, stream restoration, fluvial geomorphology, levees, erosion control, stream bank failure, erosion control plans, best management practices, FEMA floodplain studies
Dr. David Williams, PE (CO, AZ, CA, LA, MO, NM, TX, HI, MS, OR, WA) has over 45 years of experience in the water resources industry and is known for his contributions to the industry. He is also a recognized expert in sedimentation engineering and in developing innovative solutions to difficult hydraulic and hydrologic design problems in rivers and estuaries. Dr. Williams previously served as a two-time President of the International Erosion Control Association (IECA). He has served as chair of the American Society of Civil Engineers (ASCE) Technical Committees on Sedimentation, Computational Hydraulics, River Restoration, and Risk, Uncertainty and Probabilistic Approaches. He served as a committee member of ASTM A05.12 (Wire specifications) and on ASTM D18.25 (Erosion Control Products). While chair of the Federal Interagency Technical Committee on Sedimentation, he worked with hydraulic and sedimentation experts from the Federal Highway Administration, Bureau of Reclamation, U.S. ...
Michael F Myers, PE, CFM
30 Scale, LLC
Palmyra, Virginia
Civil Engineering, Hydrology
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Drainage, Hydrology, Hydraulics, Floodplain Mapping, Storm Sewer, Stormwater Management, Flooding, Storm Drainage, FEMA, Grading, Erosion and Sediment Control, Runoff
Mr. Myers has over 25 years of experience as a civil engineer in Virginia as the engineer-of-record on projects involving hydrologic/hydraulic analysis for land development projects.
A Professional Engineer in Virginia since 1999 and a Certified Floodplain Manager since 2012, Mr. Myers is experienced in commercial and residential stormwater management design, floodplain management, erosion and sediment control design, and assessing drainage issues through field investigation and written report.
