Pennsylvania Department of Environmental Protection Clean Lakes Program 1997-2011

Implements the statewide water quality monitoring network to determine the quality of
Pennsylvania's surface waters and identify long-term trends in quality; conducts surveys to
assess the quality of streams and lakes, and prepares reports identifying those streams and
lakes with protected uses deemed to be impaired; processes public petitions to re-designate the
protected use for lakes and streams; and administers the anti-degradation program in surface
waters designated for special protection. Reviews and proposes water quality criteria based upon
good science. Annually completes numerous TMDL analyses and reports. Manages aerial blackfly
spraying and conducts spraying to protect the public from mosquitos carrying the West Nile
virus. This dataset contains all water quality data for the State of Pennsylvania collected from
1997 – 2011. This dataset contains data for Secchi depth, dissolved and total nutrients,
chlorophyll, suspended sediments, trophic status indices, heavy metals, cations and anions, and
sediment composition.