WATER RESOURCES
ERO helps clients obtain and develop new water rights and supplies, protect existing water rights and uses, avoid or minimize damage to water resources and water-dependent ecosystems, navigate permitting processes, and address water quality issues. Our clients include federal, state, and local governments; irrigation and supply districts; developers; commercial businesses; individuals; and attorneys.
Areas of Expertise
Environmental scoping and impact analysis
Water supply evaluations, development, and permitting
Water rights investigations and due diligence
Water Quality Services
Surface and ground water analysis and modeling
ERO’s modeling capabilities include digital and analytical ground water flow, capture zone, contaminant transport, and surface water quality modeling. Our hydrologists use models to assist clients with:
- Expediting closure of contaminated sites
- Designing ground water remediation and control systems
- Estimating the time to clean up contaminated sites
- Determining the impact of surface water diversions and dams on downstream flow volumes and water quality
- Estimating the impact of ground water pumping on nearby wells and streams
- Estimating the impact on surface and ground water from proposed commercial, industrial, and mining facilities
Litigation support and alternatives dispute resolution
Geothermal resource development
Water Resources Leads


Jack has been with ERO since 1999 providing environmental and geologic consulting for a wide range of development and redevelopment projects. His experience includes Phase I and II Environmental Site Assessments, site characterization and monitoring, remedial action evaluations, asbestos-contaminated soils remediation, solid and hazardous waste management, abandoned mine assessment, and Voluntary Cleanup and Brownfields redevelopment. Jack leads ERO’s Geoscience division from Denver, providing environmental due diligence and remediation services throughout the west.
Email: jdenman@eroresources.com


Dave is an engineer who manages ERO’s Idaho office. His experience in water resources began in 1973 and ranges from planning and project development to regulatory, legislative, and administrative issues. Dave serves as manager or lead scientist for a variety of projects. He specializes in the water arena and has extensive experience in water supply and use studies, water rights evaluations and the water rights administrative process, alternatives dispute resolution, technical coordination of complex litigation, and expert testimony. In addition, Dave has expertise in a broad range of natural resource-based engineering and hydrology solutions such as managed ground water recharge operations, drainage systems, multijurisdiction water management, and common sense solutions for everyday needs.