This Layer shows all streams in York County Pennsylvania. The connected network of streams and waterways of York County are indicated as single lines in this coverage. Waterways are given connected topology to show the direction of flow from the headwaters of the stream through the watershed to the extent of the coverage. With ARC Network data can be used for watershed modelling. This Layer was originated from a Layer from PA DEP. York County has made updates to it as the county staff saw fit. With most nobable update being the hidden field used if it was hidden from view in the 2008 PA Map Aerial. Other Aerials used was the 2003 PA Map Aerial and 2015 York County Orthophoto.