Marsh and Rock creeks in Adams County Pennsylvania come together to form the Monocacy River just after entering Maryland.  Management of these creeks may have downstream impacts on water quality, quantity, and the dependent ecosystems. In January 2011, Pennsylvania Department of Environmental Protection designated the combined Marsh and Rock watersheds as a Critical Water Planning Area under Act 220 of 2002 – one of only three designations in the Commonwealth.  The designation resulted from a screening process indicating that the demands in Marsh and Rock creeks may exceed supply under certain conditions.  After designation as a CWPA, the process of developing a Critical Area Resource Plan (CARP) began, as specified by the legislation.  The goal of the CARP planning process is to identify a detailed list of water availability issues in the watersheds and develop practical, implementable solutions to identified issues.  The plan is scheduled for completion in late September 2012.  Downstream communities are welcome and encouraged to participate in this planning process.  Advisory committee meetings are open to the public and will be held from 1-3pm at the Agriculture and Natural Resources Center in Gettysburg (670 Old Harrisburg Rd) on January 11, April 11, and July 11 2012.  For more information, visit the project blog at http://www.marshrockwaterplan.blogspot.com/.