
The Whole Watershed Program, established through the Whole Watershed Act signed into law in May 2024, is a five-year pilot program designed to accelerate restoration and improve watershed health across Maryland. In March 2025, five watersheds were selected to participate: Antietam Creek in Washington County, Baltimore Harbor, Newport Bay near Ocean City, Severn River in Anne Arundel County and the Upper Choptank River on the Eastern Shore.
The program brings together local, state and federal partners to advance science-based, data-driven restoration. Chesapeake Conservancy's cutting-edge hydrography data can help identify and prioritize restoration opportunities across stream networks, providing valuable information to support local stakeholders who know their watersheds best.
Chesapeake Conservancy is working with Catoctin Land Trust and other partners in the Heart of Maryland Collaborative to advance restoration in the Antietam Creek watershed. This collaborative effort draws on local expertise to improve streamwater quality through targeted upland tree plantings, riparian buffer restoration, habitat improvements and agricultural conservation practices.
The Whole Watershed Act was championed in the Maryland General Assembly by then-State Senator Sarah Elfreth, now a member of the U.S. House of Representatives, and Delegate Sara Love, along with other co-sponsors.