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Biological Resources

TerraWest Conservancy provides a full range of biological resources management services for both public and private sector clients. Our team of aquatic and terrestrial biologists include a number specialists that are fully versed in procedures to comply with the National Environmental Policy Act (NEPA), Section 404 of the Clean Water Act (CWA), the California Environmental Quality Act (CEQA), and other federal, state, and local statutes related to biological resources. Our services include threatened/endangered species habitat assessment and protocol surveys, special status plant and animal species surveys, terrestrial and aquatic wildlife surveys, waters of the U.S. delineations, botanical surveys, fisheries and amphibian studies. Objectivity and adherence to sound biological resource assessment principals are critical to success within the regulatory environment, and TerraWest team of biologists have successfully demonstrated this throughout California, Idaho, Colorado and Wyoming.


Fisheries and Aquatic Habitat Assessment

Throughout the life cycle, many species of fish migrate among different habitats. Striped bass, salmon, herring, shad, and eel are common examples of migratory fish. Currently numerous wildlife agencies, both federal and state, oversee fish passage and protection projects the benefit both migratory and resident fish species, as well as other aquatic living resources. Our Team is widely respected for its conceptual and final design work for fish passage facilities and its biological assessments relating to fish passage and entrainment at project sites throughout the country. Terrawest Conservancy integrates fisheries biologists, regulatory specialists, and engineers to provide an exceptional capacity for solutions involving the mitigation of fisheries impacts and enhancement of fisheries resources. Our team has provided conceptual and final design for fish passage facilities including fish lifts, fishways, fish ladders, and downstream passage systems. This experience has earned Terrawest a reputation as a leader in fish passage, enhancement and protection services in the nation.

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Wetland Assessment and Delineation

Terrawest Conservancy has been conducting wetland evaluations for both public and private sector clients for more than 20 years. Our ecological sciences team provides a full range of consulting services, from initial phase and wetland delineation through wetland impact assessment and mitigation planning and design, as well as wetland wildlife habitat evaluations.

We have extensive permitting experience with federal, state, and local authorities including the U.S. Army Corps of Engineers, NOAA, California Department of Fish & Game, and local Conservation Commissions. Our wetlands permitting experience includes Section 401/404 of the Clean Water Act, and stormwater permitting such as National Pollutant Discharge Elimination System (NPDES) permit.

Our comprehensive approach provides the needed service to guide your project from inception to completion.

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Habitat Restoration

Terrawest Conservancy offers a full array of Habitat Restoration Services for your project mitigation requirements. We have the team and experience to implement Best Management Practices (BMPs) to address soil erosion control and we have re-vegetated thousands of acres using innovative re-seeding and re-planting strategies.

  • Agency consultation, interfacing, & permitting
  • Drainage course restoration
  • Erosion control
  • Grading
  • Habitat restoration plans
  • Health & safety plans
  • Monitoring & maintenance
  • Native seed collection
  • Plant salvage protected & rare plant surveys
  • Reporting
  • Subcontractor coordination Success criteria
  • Vegetation monitoring plans
  • Wildlife & habitat surveys

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