Pennsylvania Water Science Center


Coronavirus (COVID-19) Update
We are operating at maximum telework and continue to conduct the important work of the USGS, including maintaining mission essential and critical functions. We have implemented new safety and fieldwork processes to maintain social distancing to ensure the safety of our employees and communities while following all guidance from the White House, Department of the Interior, USGS, Centers for Disease Control and Prevention (CDC), and Pennsylvania state and local authorities.

Follow for the latest COVID-19 information from the federal government


Date published: February 27, 2021

USGS is Hiring Hydrologic Field Assistants Throughout Pennsylvania

The Pennsylvania Water Science Center is looking for Hydrologic Field Assistants to join our teams in New Cumberland (Harrisburg), Downingtown (Philadelphia), Pittsburgh, and Williamsport. Positions are part time and temporary for up to one year, but may be extended to 2 years. U.S. citizenship required.

Apply by 3/26/21...

Date published: February 5, 2021

Drought Watch Removed for 3 Pennsylvania Counties - All Commonwealth Counties now in Normal Status

On February 4, 2021, the Pennsylvania Department of Environmental Protection removed the three remaining counties under Drought Watch declarations. Hydrologic conditions for all Commonwealth counties are now in a Normal status. 

Date published: December 17, 2020

USGS and Pennsylvania Department of Agriculture study groundwater quality in agricultural areas

USGS Pennsylvania Water Science Center and the Pennsylvania Department of Agriculture have agreed on a new five-year program to continue 30 years of cooperation assessing groundwater quality in agricultural areas. 


Publication Thumbnail
Year Published: 2021

Environmental and anthropogenic drivers of contaminants in agricultural watersheds with implications for land management

If not managed properly, modern agricultural practices can alter surface and groundwater quality and drinking water resources resulting in potential negative effects on aquatic and terrestrial ecosystems. Exposure to agriculturally derived contaminant mixtures has the potential to alter habitat quality and negatively affect fish and other aquatic...

Smalling, Kelly; Devereux, Olivia H.; Gordon, Stephanie; Phillips, Patrick J.; Blazer, Vicki S.; Hladik, Michelle; Kolpin, Dana W.; Meyer, Michael T.; Sperry, Adam; Wagner, Tyler

Publication Thumbnail
Year Published: 2021

Modeling estrogenic activity in streams throughout the Potomac and Chesapeake Bay watersheds

Endocrine-disrupting compounds (EDCs), specifically estrogenic endocrine-disrupting compounds, vary in concentration and composition in surface waters under the influence of different landscape sources and landcover gradients. Estrogenic activity in surface waters may lead to adverse effects in aquatic species at both individual and population...

Gordon, Stephanie; Jones, Daniel K.; Blazer, Vicki S.; Iwanowicz, Luke R.; Williams, Brianna; Smalling, Kelly

Publication Thumbnail
Year Published: 2021

Nutrient trends and drivers in the Chesapeake Bay Watershed

The Chesapeake Bay Program maintains an extensive nontidal monitoring network, measuring nitrogen and phosphorus (nutrients) at more than 100 locations on rivers and streams in the watershed. Data from these locations are used by United States Geological Survey to assess the ecosystem’s response to nutrient-reduction efforts. This fact sheet...

Hyer, Kenneth E.; Phillips, Scott W.; Ator, Scott W.; Moyer, Douglas L.; Webber, James S.; Felver, Rachel; Keisman, Jennifer L.; McDonnell, Lee A.; Murphy, Rebecca; Trentacoste, Emily M.; Zhang, Qian; Dennison, William C.; Swanson, Sky; Walsh, Brianne; Hawkey, Jane; Taillie, Dylan
Hyer, K.E., Phillips, S.W., Ator, S.W., Moyer, D.L., Webber, J.S., Felver, R., Keisman, J.L., McDonnell, L.A., Murphy, R., Trentacoste, E.M., Zhang, Q., Dennison, W.C., Swanson, S., Walsh, B., Hawkey, J., and Taillie, D., 2021, Nutrient trends and drivers in the Chesapeake Bay Watershed: U.S. Geological Survey Fact Sheet 2020–3069, 4 p.,