Supplement B of the Main Report is intended as a companion document to the Summary to provide more detailed information on the Susquehanna River Basin Study Coordinating Committee's recommendations for the Basin. Supplement B gives particular attention to the Plan in each of the eight hydrologic sub-basins identified for the Study. This sub-division, at some risk of being repetitive, is intended to make information on the Plan more accessible at the local and regional level. Specific attention is also given to the responsibility and estimated cost to implement in the individual features of the Early Action Plan.