Flooding Expert Witnesses

Flooding 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 flooding. The flooding expert witness listings on this page are typically from fields/areas of expertise such as: Civil Engineering, Engineering, Environmental, Hydrology, Land Surveying, Meteorology, and Slip Trip & Fall.

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James J. Connors, Ph.D.

Expert in Environmental Contamination & Stormwater

James J. Connors & Associates, LLC

Mobile, Alabama
Hydrology, Environmental - PFAS, AFFF, PCBs, Landfill Leachate, Groundwater Contamination, PFOS, Flooding, Stormwater Runoff, PFOA, CAFO, Erosion, Sedimentation, Above Ground Storage Tanks, Underground Storage Tanks (USTs), Mining, CERCLA, RCRA, Hydrogeology, Hydrology, Environmental Impacts
NATIONWIDE PRACTICE in surface and subsurface hydrology. EXPERT IN ENVIRONMENTAL CONTAMINATION - Contamination of groundwater, soil, sediment, particulate, and surface-water by a variety of substances, including PFAS (PFOS, PFOA, others), PCBs, pesticides, herbicides, nutrients, radiation, metals, wood preservatives, fuels, microbes, disinfectants, oilfield brine, fracking fluids, drilling mud, BTEX, VOCs, SVOCs, solvents, and chlorinated solvents, such as trichloroethylene (TCE), tetrachloroethylene (PCE), dichloroethylene (DCE), vinyl chloride, chloroform, carbon tetrachloride, 1,1,1-trichloroethane, 1,1-dichloroethane, etc. Also, landfill leachate releases, oil and chemical spills, applications of aqueous film-forming foam (AFFF), underground and above-ground storage tank leaks, concentrated animal feeding operation (CAFO) releases, etc. EXPERT IN STORMWATER HYDROLOGY - Runoff-related impacts such as flooding, erosion, and sediment transport and deposition. EXPERT IN GENERAL A...
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Jeff Baskin

AMS Certified Consulting Meteorologist (CCM)

AeroCast Llc

Little Rock, Arkansas
Meteorology - Meteorology, Forensic, thunderstorm, Damage, wind, hail, tornado, Storm Reports, weather, data, flooding, ice, snow, temperature, accident, insurance, renewable, energy, analysis , consulting
Jeff Baskin is an AMS Certified Consulting Meteorologist (CCM) with a B.S. in Meteorology from Cornell University and nearly 30 years of experience in operational weather forecasting. His expertise spans a wide range of sectors, including broadcast, energy, and utilities, with specialized knowledge in weather-related risk assessment and forensic meteorology. He has authored forensic reports used in legal and insurance contexts and is skilled in interpreting and validating historical, real-time, and forecast weather data using advanced tools and models. Jeff is proficient with radar and satellite analysis, numerical weather prediction models (e.g., GFS, ECMWF, HRRR), and integrating observational data to reconstruct weather events with a high degree of accuracy. He also has experience communicating complex meteorological information to technical and non-technical audiences and is available for consulting engagements involving weather data verification, storm analysis, and expert eval...
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Clark Stoner, PE, PLS

Civil Engineering and Land Surveying Expert

Bear Flag Engineering Inc

Sonoma, California
Civil Engineering, Land Surveying - Civil Engineer, Land Surveyor, Geomatics Engineer, Boundary Disputes, Easements, LiDAR, Laser Scanning, UAV, Drone, Aerial Photogrammetry, Change Detection, Aerial Photo Analysis, Floodplains, Flooding, Hydraulics, Storm Drains, Sanitary Sewers, Water and Wastewater Treatment, Landslides, Wildfires
Clark Stoner has over 25 years of experience in the civil engineering and land surveying fields. His experience ranges from the design, construction and operation of large scale water and wastewater infrastructure facilities to the design and construction of amusement theme parks, subdivisions and residential, commercial and hospitality projects. He also has extensive experience as technical expert in litigation support matters involving massive flooding events, storm drain and sanitary sewer systems, landslides, land subsidence, change detection, code compliance, construction defect, origin and cause investigations, failure analysis, boundary and easement disputes, and standard of care. He has testified as an expert witness in California and Nevada on a range of issues. Mr. Stoner has also assisted consulting and legal teams to develop the macro perspective on litigation support matters through use of remote sensing techniques, such as aerial and terrestrial LiDAR, 3D laser sca...
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Megan E Abadie

Forensic Water & Environmental Engineer

Concord, California
Civil Engineering, Hydrology - Flooding, Sewer, Lateral, Hydraulic Modeling, Groundwater, Weir, Spillway, Culvert, Pipeline, PACP, Stormwater, Hydrogen Sulfide, Septic, Sinkhole, Water treatment, Water intrusion, Drainage, Green infrastructure, Rain garden, Infiltration
Ms. Abadie is a Civil Engineer with a background in hydrology and water resources. She provides root cause and scope of damage evaluations and expert witness services. Prior to joining EDT, Ms. Abadie worked in multiple sectors of water and wastewater: groundwater protection, drinking water treatment and distribution, wastewater collection and treatment, urban runoff control, watershed assessment, and asset management. She spent twelve years as a collection system engineer for the City and County of San Francisco where she developed San Francisco’s Combined Sewer Discharge inspection program, installed dozens of flowmeters, walked and crawled through hundreds of miles of sewers, designed two baffles, ran model simulations, investigated flooding claims, oversaw repairs of large underground concrete structures, and pulled a bicycle out of a pump station inlet. Join her for a tour of San Francisco’s most beautiful combined sewer outfall here: https://www.kqed.org/news/11782405/tunn...
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Chad Ballard, PE, CFM

Surface Water and Flood Expert (Nationwide)

High Water Mark

Meridian, Idaho
Hydrology, Civil Engineering - 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 Professional Engineer (P.E.) across multiple states, specializing in water resources, hydrology, and hydraulics. He possesses a deep technical background in advanced flood modeling and stormwater mitigation. Has experience working on cases involving failure of drainage infrastructure, dam/levee failures, scour and erosion, flood damages, hydroplanning, etc. His core competencies include: Stormwater and Drainage Design: Designing and analyzing systems to manage stormwater and prevent loss of life and property. Advanced Numerical Flood Modeling: Expert-level proficiency in hydraulic and hydrologic modeling tools to recreate rainfall and storm events. Flood Warning Systems: Developed modern flood warning systems for private and public clients. Forensic Engineering: Assists legal professionals across the United States and Canada. Mr. Ballard is a recognized educator and leader in his field. He has served as an adjunct faculty m...
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Mark D. McGinnis, CCM, CBM

Fair Skies Consulting

Illinois
Meteorology, Slip Trip & Fall - Slip and Fall, Hail Damage, Wind Damage, Doppler Radar Analysis, Flooding, Rainfall, Ice, Rain, Snow Removal, Lightning, Visibility, Roof Damage, Roof Collapse, Insurance Claims, Death, Sidewalk, Parking Lot, Damage, Weather Preparedness, Weather Demonstratives
Mark McGinnis, CCM is the owner of Fair Skies Consulting, LLC and one of a very small group of meteorologists to have earned the Certified Consulting Meteorologist and the Certified Broadcast Meteorologist designations from the American Meteorological Society. Mark has over twenty years of experience forecasting, analyzing and communicating complex meteorological data including, tornadoes, hurricanes, blizzards and derechos, to the public in a calm and friendly manner. After 20 years in Broadcast Meteorology full time, Mark now works part time as a fill in Meteorologist at WLS-TV ABC 7 in Chicago.
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Charles A. Budnick, PLS, CSE, M.ASCE

CABCO Consult, Inc.

Clinton, Massachusetts
Engineering, Land Surveying - Land Surveying, Survey Measurements, Construction Surveys, Accident Mapping, Boundary Disputes, Adverse Possession, Easements, Rights of Way, Slip & Fall, Site Engineering, Land Development, Septic Systems, Sewer Systems, Drainage, Earthwork, Soils, Wetlands, Flooding
Expert Witness & Consulting Experience; Accident Site Mapping, Boundary Disputes, Adverse Possession, Right of Way and Easement Disputes, Right of Way Taking Issues, Construction Lay-Out Claims, Earthwork & Soils Issues, Septic System Issues, Wetland & Flood Plain Filling Issues, Land Development & Professional Negligence Issues.
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Bryan A Mroczka, CCM

Streamline Weather Consulting, LLC

Northville, Michigan
Meteorology - Forensic Meteorology, Expert Witness, Hurricane Damage, Insurance Claims, Weather Event Reconstruc, Severe Weather, Wind Damage, Flooding, Roof Damage, Tornado Damage, Storm Damage, Hail Damage, Slip and Fall, Injury, Snow, Lightning, Flash Flooding, Car Accident, Doppler Radar Analysis, Ice
Bryan Mroczka, CCM is the owner of Streamline Weather Consulting, LLC. Bryan has a Master of Science in Meteorology from Florida State University and has earned the prestigious designation of Certified Consulting Meteorologist (CCM) from the American Meteorological Society. Bryan has over twenty years of meteorological experience as both a forensic meteorologist with Streamline Weather Consulting and with the United States National Weather Service (NWS) as a Science and Operations Officer (SOO), Senior Forecaster, Severe Weather Warning Forecaster, and a Decision Support / Communications Specialist. These positions have allowed Bryan to become highly skilled in the communication of meteorological concepts and the analysis / interpretation of meteorological datasets as they relate to decision support services and legal / litigation purposes. Through Streamline Weather Consulting Bryan has worked cases that include severe thunderstorm damage claims, tornado damage claims, slip and f...
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John E Skidmore, PE, BSCE

Forensic Civil Engineer (Multi-state)

Owosso, Michigan
Civil Engineering, Hydrology - Building science, Hydrology, Water leaks, Auto impact assessment, Moisture Intrusions, Drainage, On-site sewage disposal, Construction defects, Flooding, Roofing, Foundations, Geotechnical, Storm damage assessment
Forensic engineer with experience in a wide variety of activities within the civil engineering discipline, including land planning, surveying, hydrology and hydraulics, geotechnical and foundations and on-site sewage disposal facilities. Licensed Professional Engineer in Alabama, Florida, Illinois, Indiana, Iowa, Louisiana, Michigan, Ohio, Pennsylvania, Texas, West Virginia, Wisconsin. Testified as an expert at arbitrations, depositions, and trials. Subjects included drainage and flooding, water intrusions, pipe leaks and structural damage to buildings from vehicle impacts, tree impacts and storms.
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Douglas B Blatchford, PE, PH, CEM, CFM

Southwest Hydrology & Hydraulics, LLC

Boulder City, Nevada
Hydrology, Engineering - Water Resources focused on: Flooding, Floodplain Management, Drainage, Surface Water Hydrology, Hydraulic Structures, Grading, Erosion, Permitting, water resource issues, Flooding
Mr. Douglas B. Blatchford, PE (AZ, CA, CO, NM, NV, TX, UT) has over 40 years of experience as a water resource professional. His experience includes dam safety, design and construction, energy, geographic information systems, groundwater hydrology, remote sensing, river systems, and surface water hydrology, in support of his expert witness practice focus area in water resources (flooding, floodplain management, drainage, hydrology, hydraulic structures, grading, erosion, and permitting). Mr. Blatchford served the United States Government (Interior, Reclamation) as the River Operations Manager on the Lower Colorado River, involved with water deliveries to Phoenix, Tucson, Los Angeles, San Diego, and irrigators in southern California, southern Arizona, and Mexico. He actively served west wide in Reclamation’s dam safety program, and interfaced extensively with the USGS, the USACE, NOAA, the Colorado River Basin Forecast Center (CBRFC), Mexico, and many irrigators, local and state agen...
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Alicia Wasula, PhD, CCM

STM Weather

Cropseyville, New York
Meteorology - Weather, Forensic Meteorology, Severe Weather, Weather Radar, Severe Thunderstorms, Tornadoes, Flooding, Weather Preparedness, Slip & Fall, Weather Related Accidents, Weather Reconstruction
Dr. Alicia Wasula, President of STM Weather, formerly Shade Tree Meteorology, earned her Bachelor, Master and Doctoral Degrees in Meteorology at the University at Albany and recently earned her CCM as well. She developed a passion for severe weather and traveled to the Great Plains to study it in the field. She spent a summer in Norman, Oklahoma at the National Storm Prediction Center, doing research with Bob Johns, a prominent severe weather scientist. In graduate school, Alicia developed a skill for making difficult meteorological concepts understandable in the classroom. Alicia taught a variety of courses from upper level science to entry level courses for non science majors, earning praise for her communication style. During her post-graduate studies, Alicia continued to work closely with operational forecasters on research projects at the Albany National Weather Service Office and the the Storm Prediction Center on both her Master and Doctoral research projects. Alicia cont...
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Chuck Dutill, PE, DFE

Hydrology and Environmental Engineering Expertise

Heritage Technical Services, Inc.

Philadelphia Area, Pennsylvania
Environmental, Engineering - 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 design, contamination, pollution, FOG/grease trap, 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 state and federal 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...
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Steve Wistar, CCM

AccuWeather for Business

State College, Pennsylvania
Meteorology, Slip Trip & Fall - Insurance, Construction, Wrongful Death, Slip and Fall, Accident Reconstruction, Wildfires, Hail, High Wind, Tornadoes, Fog, Visibility, Rainfall, Flooding, Roof Damage, Lightning, Insurance Claims, Snow, Ice, Weather
As a Certified Consulting Meteorologist (CCM) and Expert Senior Forensic Meteorologist with 45 years of experience with AccuWeather, Steve has worked on numerous cases involving slip and falls, flooding, highway accidents, building and crane collapses, severe wind impacts, Hurricane Katrina and Hurricane Sandy. Steve uses his tremendous attention to detail and his excellent communication skills to explain meteorology to the non-scientist. At AccuWeather, Steve constructs impartial scientific reports for use in courts of law to support both plaintiff and defense. He has testified more than 150 times in courtrooms or at depositions in 18 states.
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Kenneth R Dees, P.E.

Civil Engineering and Hydrology

CM2E

Fort Worth, Texas
Civil Engineering, Hydrology - floodplain, detention pond, drainage, downstream impact, flooding, FEMA floodplain studies, hydrology, hydraulics
Kenneth Dees, P.E. CFM has over 40 years of experience in the water resources industry and is known for his expertise in drainage and floodplain engineering. A graduate of Southern Methodist University (1984), he has been a business owner, project manager and civil engineer who has been involved in some of the largest projects in the history of the State of Texas. He has considerable expertise pertaining to topics related to storm water engineering of all types. Mr. Dees began his career at MCI Telecommunications where he was responsible for tracking all construction projects on a nationwide scale and reporting to the board of directors. In 1985, Mr. Dees joined Espey Huston & Associates (EHA). His role at EHA was focused on water resources related projects. In 1987, Mr. Dees founded what would become Chalk Mountain Engineering. In the early days, Mr. Dees developed computer software for civil site engineering, land surveying and mapping applications. As a result of this ex...
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Michael F Myers, PE

Storm Drainage Expert

30 Scale, LLC

Palmyra, Virginia
Civil Engineering, Hydrology - Drainage, Hydrology, Hydraulics, Storm Sewer, Stormwater Management, Flooding, Storm Drainage, Grading, Erosion and Sediment Control, Runoff
Michael Myers, P.E. brings over 30 years of civil engineering experience serving as engineer-of-record on a wide range of land development projects involving stormwater management and design. A licensed Virginia Professional Engineer since 1999, Mr. Myers is well-versed in storm drainage, erosion and sediment control, and the investigation of complex stormwater management issues. He has authored detailed technical expert reports in support of legal proceedings and offers clear, grounded analyses as part of his expert witness services. My resume on request.
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Mark D. McGinnis, CCM, CBM

Fair Skies Consulting

Waukesha, Wisconsin
Meteorology, Slip Trip & Fall - Slip and Fall, Hail Damage, Wind Damage, Doppler Radar Analysis, Flooding, Rainfall, Ice, Rain, Snow Removal, Lightning, Visibility, Roof Damage, Roof Collapse, Insurance Claims, Death, Sidewalk, Parking Lot, Damage, Weather Preparedness, Weather Demonstratives
Mark McGinnis, CCM is the owner of Fair Skies Consulting, LLC and one of a very small group of meteorologists to have earned the Certified Consulting Meteorologist and the Certified Broadcast Meteorologist designations from the American Meteorological Society. Mark has over twenty years of experience forecasting, analyzing and communicating complex meteorological data including, tornadoes, hurricanes, blizzards and derechos, to the public in a calm and friendly manner. After 20 years in Broadcast Meteorology full time, Mark now works part time as a fill in Meteorologist at WLS-TV ABC 7 in Chicago.