Watershed Map Catasauqua Creek Little Lehigh Creek Watershed Coplay Creek Watershed Hosensack Creek Watershed Saucon Creek Watershed Monocacy Creek Watershed Trout Creek Watershed Mill Creek Watershed Ontelaunee Creek Watershed Fells Creek Watershed Lehigh River Watershed Stony Run Watershed Perkiomen Creek Headwaters Watershed Perkomen Creek Headwaters Lehigh River Watershed Lehigh River Watershed Rockdale Creek Watershed Kistler Creek Watershed Lehigh River Watershed Jordan Creek Watershed Spring Creek Watershed Mill Creek Heidelberg TWatershed