Science  •  Management  •  Regulatory

Expert Fisheries &
Aquatic Consulting

Empowering clients with strategic aquatic resource solutions across the Pacific Northwest.

Led by a former NMFS & USFWS Senior Biologist

Services Contact

What We Do

Comprehensive Aquatic
Resource Services

Celedonia Environmental provides trusted leadership for the Pacific Northwest's fisheries and aquatic management challenges.

Strategic Guidance

Expert counsel for projects and management actions affecting salmonids and their habitat.

ESA Consultations & BA's

Efficient consultations and approval-ready Biological Assessments led by a recognized ESA and Section 7 expert.

Independent Technical Reviews

Science-based insight and unbiased "second-opinion" memos.

Grant Writing

Reviewer-ready, criteria-based proposals focused on implementation readiness, measurable benefits, and a clear workplan.

Field Studies & Surveys

Well-designed aquatic research and monitoring programs executed with precision.

Shoreline & In-Water Permitting

Practical permitting support for complex local, state, and federal aquatic permitting.

Hatchery & Genetic Management Plans

HGMPs designed to withstand NMFS and USFWS scrutiny.

FERC License Support

Support with license requirements and aquatic resource commitments.

About

Mark Celedonia, MES

Owner / Principal

"I help clients navigate complex fisheries and aquatic resource challenges — delivering practical results that work for people and fish alike."

Over 23 years with NMFS and USFWS, Mark worked on some of the toughest salmon and habitat projects in Puget Sound, the Columbia River basin, and beyond. With extensive experience in scientific analysis, field investigations, and federal regulatory processes, he provides expert leadership in salmon recovery, habitat restoration, and impact avoidance and minimization strategies for diverse projects.

Mark specializes in translating complex science into actionable management recommendations, regulatory guidance, and technical support for federal, state, local, and tribal partners.

Mark Celedonia, MES — Owner/Principal

Mark Celedonia, MES

Owner / Principal

Representative Project History

Applied Research & Field Surveys

Led 5-year, multi-million dollar Chinook salmon acoustic tracking studies in Lake Washington. Evaluated fish use of engineered logjams in four western Washington rivers. Used bioenergetic modelling to assess predation on juvenile salmonids.

Technical Support & Analyses

Lead reviewer for Skokomish River restoration and Skagit River flood control proposals, identifying critical data gaps and ensuring restoration and mitigation effectiveness. Authored tailored grant proposal narratives for Miller River restoration and floodplain reconnection project.

Regulatory Consultations (ESA, MSA, FERC, FWCA)

Recognized ESA Section 7 expert. Over 75 formal, informal, and programmatic consultations completed across diverse project types. Led FERC license implementation for 5 major hydropower projects.

Hatchery Consultations

Successfully led high-priority, litigation-driven programmatic ESA consultation on the federal Southern Resident Killer Whale prey increase program involving release of 20 million hatchery Chinook smolts across the Pacific Northwest.

Education & Affiliations

Academic Background

Master of Environmental Studies, Salmonid and Watershed Ecology — The Evergreen State College, Olympia, WA.
B.S. Mechanical Engineering — Kettering University, Flint, MI.

Professional Leadership

American Fisheries Society (AFS): Lifetime Member.
AFS Washington-British Columbia Chapter: Past-President.

Get in Touch

Ready to Work Together?

Reach out to discuss your project, schedule a consultation, or learn more about Celedonia Environmental's services.

mark@celedoniaenv.com (360) 888-2775