TY - RPRT TI - Occurrence and trends in the concentrations of fecal-indicator bacteria and the relation to field water-quality parameters in the Allegheny, Monongahela, and Ohio Rivers and selected tributaries, Allegheny County, Pennsylvania, 2001–09 AU - John W. Fulton AU - Edward H. Koerkle AU - Jamie L. McCoy AU - Linda F. Zarr PY - 2016 DO - 10.3133/sir20155136 UR - https://pubs.usgs.gov/publication/sir20155136 ID - sir20155136 ER -