Federal
U.S. Army Corps of Engineers - [organizational map], [National Levee Database], [Levee Vegetation Management]
U.S. Fish and Wildlife Service - [organizational map]
U.S. Forest Service - [organizational map]
Urban and Community Forest Program
United States Senate - Pennsylvania, Robert Casey, Jr. and Patrick Toomey
United States House of Representatives - Pennsylvania District 10, Scott Perry
Susquehanna River Basin Commission
State
Pennsylvania Game Commission - [organizational map]
Pennsylvania Department of Transportation - [organizational map]
State House District 47, Keith Gillespie (including Manchester and northern Springettsbury Townships)
State House District 94, Stan Saylor (including southern Springettsbury Township)
State Senate District 28, Kristin Phillips-Hill (including Manchester Township)
State Senate District 48, Chris Gebhard (including Springettsbury Township)
Local
York County Water Conservation District
York County Agricultural Land Preservation Board - (Conservation easements)
Organizational
Plantae
Pennsylvania Native Plant Society
The Pennsylvania Flora Project of Morris Arboretum (great for native plant location searches)
Animalia
Fungi
Watersheds
Open Space
Public
York County Parks
Private
Farm and Natural Lands Trust of York County (Conservation easements)
Retail - South Central Pennsylvania Area Native Plant Nurseries
Aquatic Resource Restoration Company
Founded 2021.
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