| Pennypack Creek At Horsham, PA |
| Pennypack Creek At Lower Rhawn St Bdg, Phila., PA |
| Pennypack Creek At Pine Road, At Philadelphia, PA |
| Pennypack Creek Near Willow Grove, PA |
| Pennypack Creek Tributary At Hatboro, PA |
| Pequea Creek At Martic Forge, PA |
| Pequea Creek Near Ronks, PA |
| Perkiomen Creek At East Greenville, PA |
| Perkiomen Creek At Graterford, PA |
| Pine Creek At Cedar Run, PA |
| Pine Creek At Grant Avenue At Etna, PA |
| Pine Creek Below Little Pine Creek Near Waterville, PA |
| Pocono Creek Above Wigwam Run Near Stroudsburg, PA |
| Pohopoco Creek At Kresgeville, PA |
| Pohopoco Creek Below Beltzville Dam Near Parryville, PA |
| Poquessing Creek At Grant Ave. At Philadelphia, PA |
| Quittapahilla Creek Near Bellegrove, PA |
| Raccoon Creek At Moffatts Mill, PA |
| Rays Bridge Juniata River Below Rays Dam Near Huntingdon, PA |
| Raystown Branch Juniata River At Saxton, PA |
| Raystown Branch Juniata River At Wolfsburg, PA |
| Redbank Creek At St. Charles, PA |
| Red Clay Creek Near Kennett Square, PA |
| Redstone Creek At Waltersburg, PA |
| Ridley Creek At Media, PA |
| Sandy Lick Creek At Dubois, PA |
| Sawmill Run At Duquesne Heights Near Pittsburgh, PA |
| Schuylkill River At Berne, PA |
| Schuylkill River At Landingville, PA |
| Schuylkill River At Norristown, PA |
| Schuylkill River At Philadelphia, PA |
| Schuylkill River At Pottstown, PA |
| Schuylkill River At Reading, PA |
| Sevenmile Run Near Rasselas, PA |
| Shenango River At Pymatuning Dam, PA |
| Shenango River At Sharpsville, PA |
| Shenango River Near Transfer, PA |
| Sherman Creek At Shermans Dale, PA |
| Sinnemahoning Creek At Sinnemahoning, PA |
| Slippery Rock Creek At Wurtemburg, PA |
| South Fork Tenmile Creek At Jefferson, PA |
| Spring Creek At Houserville, PA |
| Spring Creek At Milesburg, PA |
| Spring Creek Near Axemann, PA |
| Stonycreek River At Ferndale, PA |
| Straight Run, Site 1, At Marsh Creek, PA |
| Sugar Creek At West Burlington, PA |
| Susquehanna River Above Dam At Sunbury, PA |
| Susquehanna River At Bloomsburg, PA |
| Susquehanna River At Danville, PA |
