Introduction to Earthen Spillway Erosion: Basic Processes and Parameters: Instructors

Karl Visser, PE
Freese and Nichols, Inc.
Hydraulic Engineer

Karl is an experienced water resources engineer with deep expertise in auxiliary spillway erosion, dam breach analysis, and H&H design. He has provided technical guidance to federal, state and international users. Karl’s experience spans reviewing more than 200 dam rehabilitation projects nationwide, contributing to the 2019 update of the National Resources Conservation Service’s (NRCS) TR-60 Earth Dams and Embankments and mentoring the next generation of hydraulic engineers. He has also led training in various hydrology software, reviewed complex CFD models and co-led NRCS HEC-RAS efforts. Karl is known for communicating complex engineering concepts clearly, bringing technical depth and practical insight to water infrastructure challenges.

Kyle Horsham, PE
Freese and Nichols, Inc.

Kyle Horsham is a licensed professional engineer in North Carolina with 6 years of experience. Kyle focuses on geotechnical analysis for dam evaluations and design. He has experience in estimating soil properties for erodibility analysis and developing earthen auxiliary spillway profiles used for both SITES and WinDAM C. His consulting experience includes geotechnical subsurface investigations and reporting, in-situ and laboratory testing, 2D and 3D seepage and slope stability modeling, H&H analysis, dam engineering, and retaining wall design.