Walt has been providing hydrogeological services for close to 30 years. He specializes in groundwater basin characterization, groundwater supply planning, development and operations, and aquifer storage and recovery (ASR) in Oregon and Washington.

Walt is experienced in aquifer characterization and yield analyses, well interference analyses, groundwater/surface water interaction studies to inform water rights strategies, water quality improvement strategies, assessment and optimization of existing groundwater facilities, and source water vulnerability studies. Walt is also an expert on the design, performance assessment and rehabilitation of water supply wells.