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Water Quality Modeling

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Recoding of AMDTreat Phase 2: Integration of PHREEQ-N-AMDTreat water-quality prediction tools with recoded AMDTreat cost-analysis software

Newly developed PHREEQ-N-AMDTreat water-quality prediction tools indicate potential changes in pH, dissolved metals, and associated solute concentrations resulting from passive and active treatment of coal-mine drainage.
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Recoding of AMDTreat Phase 2: Integration of PHREEQ-N-AMDTreat water-quality prediction tools with recoded AMDTreat cost-analysis software

Newly developed PHREEQ-N-AMDTreat water-quality prediction tools indicate potential changes in pH, dissolved metals, and associated solute concentrations resulting from passive and active treatment of coal-mine drainage.
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York County Sediment and Nutrient Monitoring

Since 2019, the USGS Pennsylvania Water Science Center has been cooperating with York County, Pennsylvania to implement in-stream monitoring to produce surrogate regression equations to compute, in real time, the concentration and load of total nitrogen, total phosphorus, and suspended sediment for 6 major watersheds in York County, Pennsylvania. This partnership provides the York County Planning...
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York County Sediment and Nutrient Monitoring

Since 2019, the USGS Pennsylvania Water Science Center has been cooperating with York County, Pennsylvania to implement in-stream monitoring to produce surrogate regression equations to compute, in real time, the concentration and load of total nitrogen, total phosphorus, and suspended sediment for 6 major watersheds in York County, Pennsylvania. This partnership provides the York County Planning...
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Predictive Modeling of Bacteria Concentrations at Presque Isle State Park, Erie, Pennsylvania

Approximately 7 miles of Lake Erie shoreline lies within Presque Isle State Park in Erie, Pa. Monitored public bathing beaches at Presque Isle make up less than 1 mile. Concentrations of Escherichia coli (E. coli) at monitored beaches in Presque Isle State Park occasionally exceed the single-sample bathing-water standard of 235 colonies per 100 milliliters resulting in potentially unsafe swimming...
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Predictive Modeling of Bacteria Concentrations at Presque Isle State Park, Erie, Pennsylvania

Approximately 7 miles of Lake Erie shoreline lies within Presque Isle State Park in Erie, Pa. Monitored public bathing beaches at Presque Isle make up less than 1 mile. Concentrations of Escherichia coli (E. coli) at monitored beaches in Presque Isle State Park occasionally exceed the single-sample bathing-water standard of 235 colonies per 100 milliliters resulting in potentially unsafe swimming...
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