The major Pennsylvania Lake Erie subwatersheds, which are named for the streams that empty into the lake, are indicated on this map in different colors. The white areas along the shoreline drain directly into Lake Erie. On the west side of Erie, Turkey Creek, Conneaut Creek and Ashtabula Creek cross into Ohio before emptying into Lake Erie. Twenty Mile Creek, the easternmost subwatershed in Erie County, begins in New York Sate before crossing into Pennsylvania. The smaller tributaries, which flow into the larger named tributaries, are not shown on this map. No single entity regulates or manages Lake Erie and its watershed; many governments, agencies, organizations and individuals share the responsibility. Because water does not follow political boundaries, a collaborative watershed approach is needed to protect and enhance the entire Lake Erie watershed, which is the source of drinking water for millions of people. Join us again in September for more coverage of the Great Lakes and Lake Erie watersheds.