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ESA assists clients with projects involving threatened or endangered fish species, ecosystem restoration, watershed planning, flood management, water supply and water rights, water quality, and land/resource management.

Our fisheries scientists are skilled in assessing riparian areas, evaluating instream habitats, identifying fish and aquatic species, determining impacts to federally-listed and state sensitive aquatic species, and developing appropriate mitigation strategies. Our ability to inventory existing conditions, analyze data, and develop/implement restoration and management solutions for freshwater and estuarine aquatic resources is complemented by our related services in fluvial hydrology, tidal wetlands, and riparian ecosystem restoration. ESA provides fish removal services prior to construction, construction oversight, and fish passage design for roads and bridges. Our multidisciplinary expertise enables us to provide complete and integrated fisheries and aquatic science services.

Specialized Services

  • Construction observation and support
  • Creek daylighting
  • Endangered Species Act
  • Environmental compliance documentation
  • Fish passage design
  • Fisheries habitat enhancement
  • Habitat modeling
  • Habitat restoration and enhancement
  • Hydrodynamic modeling
  • Hydrologic and hydraulic modeling
  • In stream flow studies
  • Modeling and analysis
  • Monitoring
  • Special status species surveys and inventories
  • Tidal wetlands and marsh restoration
  • Water quality analyses
  • Watershed assessments
  • Watershed management plans
  • Wetland assessments
  • Wetland restoration