On March 21, 2006, the Board of County Commissioners approved the Linganore Watershed Action Plan Document, a watershed management plan designed to reduce the sediment and nutrient pollution entering Lake Linganore and address the lake's water quality impairment. The State of Maryland has issued a Total Maximum Daily Load (TMDL) for Lake Linganore. The Action Plan is the implementation component of the 2004 Linganore Source Water Protection Plan and contains 5 areas of focus:
Education and Outreach
Infrastructure and Maintenance
The action plan calls for changes to county policy, modifications to operational practices and amendments to ordinances and regulations, which county staff is currently working on.