| Loyalhanna Creek At Latrobe, PA |
| Loyalhanna Creek At Loyalhanna Dam, PA |
| Loyalsock Creek At Loyalsockville, PA |
| Lycoming Creek Near Trout Run, PA |
| Lycoming Creek Near Williamsport, PA |
| Mahoning Creek At Mahoning Creek Dam, PA |
| Mahoning Creek At Punxsutawney, PA |
| Maiden Creek Near Virginville, PA |
| Manada Creek At Manada Gap, PA |
| Manatawny Creek Near Spangsville, PA |
| Marsh Creek At Blanchard, PA |
| Marsh Creek Near Downingtown, PA |
| Marsh Creek Near Glenmoore, PA |
| Monocacy Creek At Bethlehem, PA |
| Monongahela River At Braddock, PA |
| Monongahela River At Charleroi, PA |
| Monongahela River At Elizabeth, PA |
| Monongahela River At L&D2 Lower Pool At Braddock, PA |
| Monongahela River At L&D4 Upper Pool At Charleroi, PA |
| Monongahela River At Maxwell L&D (Lower Pool) At Maxwell, PA |
| Monongahela River At Maxwell L&D Upper Pool At Maxwell, PA |
| Monongahela River At Point State Park At Pittsburgh, PA |
| Monongahela River Below Lock & Dam 3 At Elizabeth, PA |
| Monongahela River L&D8 (Lower Pool) At Point Marion, PA |
| Monongahela River L&D8 (Upper Pool) At Point Marion, PA |
| Monongahela River (Lower Pool) Near Masontown, PA |
| Monongahela River Near Masontown, PA |
| Mountain Creek Near Pine Grove Furnace, PA |
| Muddy Creek Near Portersville, PA |
| Muncy Creek Near Muncy, PA |
| Muncy Creek Near Sonestown, PA |
| Naylor Creek At Upper Darby, PA |
| Neshaminy Creek Near Langhorne, PA |
| Neshaminy Creek Near Penns Park, PA |
| Neshaminy Creek Near Rushland, PA |
| North Branch Neshaminy Creek At Chalfont, PA |
| North Branch Neshaminy Creek Below Lake Galena Near New Britain, PA |
| North Branch Sugar Creek Tributary Near Columbia Cross Roads, PA |
| Oak Hill Disch 200 M Below Borehole At Duncott, PA |
| Ohio River Above Montgomery Dam & Locks At Ohioview, PA |
| Ohio River At Emsworth Dam Lower Pool At Emsworth, PA |
| Ohio River At Emsworth Dam Upper Pool At Emsworth, PA |
| Ohio River At Montgomery Lock & Dam, Lower Pool, PA |
| Ohio River At Sewickley, PA |
| Ohio River (Lower Pool) At Sewickley, PA |
| Oil Creek At Rouseville, PA |
| Oswayo Creek At Shinglehouse, PA |
| Paxton Creek Near Glenwood, PA |
| Penns Creek At Penns Creek, PA |
| Pennypack Creek At Bethayres, PA |
