Dennis Halligan

Senior Fisheries Biologist at Stillwater Sciences

Arcata, California, United States

About

Specialties: Fisheries and wildlife biology, forestry, watershed analysis, construction monitoring, water rights, NEPA/CEQA, biological assessments, Endangered Species Act consultations

Experience

  • Senior Fisheries Biologist at Stillwater Sciences
    Jun 2007 - Present · 19 yrs 2 mos

    Extensive experience conducting watershed analyses, fish habitat and impact assessments, fish species composition and distribution studies, fish passage risk analyses, bird and amphibian surveys, instream flow planning, water rights permitting, stream restoration, forestry, and instream construction monitoring. Primary or contributing author for various permitting and regulatory documents including biological assessments for federal Endangered Species Act consultations, Incidental Take Permit applications pursuant to California Endangered Species Act, National Environmental Policy Act (NEPA), California Environmental Quality Act (CEQA), and Federal Energy Regulatory Commission (FERC) relicensing. Representative projects include working on the CEQA process for the Klamath Dam Removal project, PG&E Humboldt Bay Nuclear Power Plant decommissioning, Kidder Creek (Scott River, CA) instream flow study, Tuolumne River Don Pedro Project relicensing, and a variety of watershed restoration projects.

  • Fisheries Biologist at Natural Resources Management Corp.
    Jun 1993 - May 2007 · 14 yrs

    Conducted watershed analyses on public and private lands, sediment source inventories, instream habitat and anadromous salmonid monitoring, and fish passage assessments. Participated in timber harvest planning and impact assessments, development of NEPA/CEQA documents, biological assessments, and various reports.

  • Biological Technician at U.S. Forest Service
    Apr 1992 - Mar 1993 · 1 yr

    Participated in several projects relating to fisheries restoration, instream habitat and fish population monitoring, and sediment source inventories.

  • Deckhand and deck boss at Commercial Fisherman
    Aug 1979 - Nov 1991 · 12 yrs 4 mos

    Repair and maintenance of bottom and midwater trawls, diesel engines, hydraulic and refrigeration systems. Welding and general vessel maintenance; catching, sorting, and delivering shrimp and fish; running deck crew; taking over fishing duties from skipper at night.

  • Owner/Operator at Sea Harvest Shellfish Company
    Nov 1986 - Nov 1990 · 4 yrs 1 mo

    Owned and operated an oyster mariculture company in Humboldt Bay, CA during time-off periods from commercial fishing. Duties included welding all off-the-bottom racks, oyster nursery and grow-out, marketing, accounting, advertising, employee management, etc.