Our Affiliates



Atlantic States Legal Foundation (ASLF)

Baltimore Woods Nature Center

Carpenters Brook Fish Hatchery

CenterState Corporation for Economic Opportunity (CEO)

Central New York Land Trust

Central New York Regional Planning and Development Board (CNYRPDB)

Certified Environmental Services Inc

Citizens Participation Working Group (CPWG)

City of Syracuse 

City of Syracuse Department of Neighborhood and Business Development

City of Syracuse Department of Public Works


Cleveland Botanical Garden (CBG)

Cornell Cooperative Extension of Onondaga County (CCE)

CNY Arts

Darrin Freshwater Institute  (Research Center of Rensselaer Polytechnic Institute)

Dewitt Rotary Club

DuLac Engineering

Earth Designs Landscaping and Consulting (EDLC)

Environmental Design & Research, Landscape Architecture, Engineering, & Environmental Services, D.P.C. (EDR)

Environmental Finance Center (EFC) (of Syracuse University)

Environmental Health Council

Finger Lakes Institute

Fisher Associates

F.O.C.U.S Greater Syracuse

Fullers Overlook Farm

Georgetown University School of Law

Hamilton College

Haudenosaunee Environmental Task Force


Izaak Walton League of CNY

Jacobs (Syracuse) (Formerly CH2M Hill)

L & M Training Center

LeMoyne College Center for Urban and Regional Applied Research 

Miller Engineers

National Fish and Wildlife Foundation (NFWF)

Natural Heritage Trust

Natural Systems Engineering  (NSE)

Neighbors of the Onondaga Nation (NOON)

New York Mills Union Free School District

New York Sea Grant (NYSG)

New York State Department of Environmental Conservation (NYSDEC)

New York State Department of Transportation (NYSDOT)

New York State Office of Attorney General (NYSAG)

New York State Thruway Authority

Oneida County Soil and Water Conservation District

Oneida Lake Association

Onondaga Audubon

Onondaga County

Onondaga County Department of Water Environment Protection (OCDWEP)

Onondaga County Health Department

Onondaga County Health Department Childhood Lead Poisoning Prevention

Onondaga County Health Department Healthy Neighborhoods

Onondaga County Parks

Onondaga County Soil & Water Conservation District (OCSWCD)

Onondaga Earth Corps (OEC)*

Onondaga Historical Association (OHA)

Onondaga Nation**

Onondaga Nation Youth Group

Onondaga Yacht Club

Orenda Springs

Oriskany Central School District

Partnership for Onondaga Creek (POC)*

PUSH Buffalo

Rensselaer Land Trust

Rensselaer Plateau Alliance

Rensselaer Polytechnic Institute (RPI)

Research Foundation for the State University of New York (SUNY), The

Seeler Engineering, P.C.

Solitude Lake Management

Stony Brook University

SUNY Cortland

SUNY College of Environmental Science and Forestry (ESF)

SUNY College of Environmental Science and Forestry (ESF) Department of Landscape Architecture

Syracuse Center of Excellence (CoE) in Environmental and Energy Systems (of Syracuse University)

Syracuse City School District

Syracuse Peace Council

Syracuse United Neighbors (SUN)

Syracuse University (SU)

Syracuse University Maxwell School Program for the Advancement of Research on Conflict and Collaboration (PARCC)

Syracuse University School of Education Office of Professional Research and Development (OPRD)

Terry Horst Landscape Architecture, PC

TogetherGreen (Toyota and Audubon)

Town of DeWitt

Town of DeWitt Highway Department

Town of Manlius

Town of Onondaga

Trowbridge Wolf Michaels Landscape Architects LLP

United States Army Corps of Engineers (USACE)

United States Environmental Protection Agency (USEPA)**

United States Fish and Wildlife Service (USFWS)

United States Geological Survey (USGS)

Upstate Freshwater Institute (UFI)

Utica City School District

Watershed Assessment Associates (NYS-Certified Women Business Enterprise [WBE])

Waterville Central School District


*OEI served as the corporate fiscal sponsor for the Onondaga Earth Corps (OEC) beginning in May 2011, building OEC’s capacity to grow into an independent nonprofit in 2016. OEI’s mission is supported by OEC’s mission to empower youth to be active participants in creating positive change for their communities and the environment, specifically by fostering outreach and education to develop an informed public, promote environmental ethics and build an environmentally conscious citizenry.

OEI served as fiscal sponsor to the Partnership for Onondaga Creek (POC) from December 2010 through its dissolution in November 2018 upon celebrating 17 years of effective and important environmental justice work. OEI and POC’s missions are aligned through commitment, education and positive action toward the revitalization and protection of our water resources.

As a 501(c)(3) organization, OEI receives contributions, including grants, on behalf of the sponsored groups; administers these funds; and performs the necessary grant management tasks, including records management, accounting of expenditures, financial reporting, progress reporting, and managing the related human resources and payroll duties. OEI also provides general nonprofit management oversight while helping these groups build capacity to transition to independence. OEI has managed over $1 million awarded through over 30 grants and contracts on behalf of its fiscal sponsorees.


** OEI understands the government-to-government relationship between the Onondaga Nation and USEPA and is honored to support the consultation and cooperation between these two governments.