The final report includes a change in the designation for a nearly 100-mile section of the main stem of the Susquehanna River from “unimpaired” for aquatic life and recreational uses, to having insufficient water quality data to make an impairment determination. That change from the draft to the final report reflects comments submitted to PADEP from EPA and others, as well as ongoing efforts to identify the cause of health impacts to the Susquehanna’s smallmouth bass population. PADEP initiated a special study of the fish health problem in 2012 and is continuing its data collection efforts in 2013 to further assess water quality in the Susquehanna River and its major tributaries, and identify the cause(s) for the decline in smallmouth bass. While these steps are underway, the Chesapeake Bay TMDL and accompanying Pennsylvania Watershed Implementation Plans require action to reduce nitrogen, phosphorus and sediment pollution within the Susquehanna watershed.
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