Aggregate Buffer Maintenance Program
Across Pennsylvania, thousands of acres of riparian forest buffers have been planted along streams to improve water quality, reduce runoff and create important wildlife habitat. These buffers, made up of trees and shrubs, are a long-term investment in the health of the Chesapeake Bay watershed. But planting is only the first step. To succeed, these buffers need ongoing care and maintenance to grow into healthy forests that deliver lasting benefits.
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The Aggregate Buffer Maintenance Program helps make sure these restoration projects thrive. The program brings in professional contractors to handle essential maintenance work that many landowners cannot realistically handle themselves. This includes assessing buffer conditions, controlling invasive and noxious plants with targeted herbicide applications, maintaining or removing tree shelters and stakes, replacing dead trees and shrubs and addressing threats such as harmful insects and plant diseases. By reducing competition around young trees and shrubs, maintenance improves survival and supports strong growth that protects nearby streams.
Now in its third year, the program continues to grow. In 2026, maintenance is scheduled for 46 sites covering 192 acres across rapid-delisting catchments in six Pennsylvania counties. These are places where improving water quality can help meet restoration goals more quickly.
The program also focuses on building a skilled workforce. There are currently few contractors qualified to do this specialized work, so Chesapeake Conservancy has partnered with Susquehanna University to train new technicians. Since 2023, four student technicians have been hired each year and trained in herbicide application, buffer assessment and field maintenance. Participants earn Pennsylvania Pesticide Applicator Certification and complete safety, ecological and professional training before working in the field.
By caring for existing buffers and training new professionals, the Aggregate Buffer Maintenance Program helps ensure that today’s restoration efforts continue to support cleaner water, healthier streams and stronger habitats well into thefuture. For more information, contact Senior Project Restoration Advisor Frank Rohrer at frohrer@chesapeakeconservancy.org.
