A tile map of the U.S. showing mean daily stream temperature for the 5 USGS stream sites with the longest daily temperature records in each U.S. state. The oldest site, in Philadelphia, Pennsylvania, began collecting data in October 1964.
Natalie Schmer
Natalie Schmer is a Hydrologist with the Pennsylvania Water Science Center.
Her current work focuses on surface water quality, using both discrete and continuous water-quality measurements along with surrogate regression modeling to estimate concentrations and loads for several different water quality constituents including suspended sediment, total nitrogen, and total phosphorus. She is also interested in a variety of other topics such as aquatic ecosystem ecology (specifically river metabolism), data visualization, and science communication.
Current Projects
- Surrogate regression modeling for sediment and nutrient concentration and loads in sub-basins of the Chesapeake Bay Watershed
- Analyzing nutrient and sediment dynamics in the lower Susquehanna watershed
- Surface and ground water sampling
Professional Experience
2021-Present – Hydrologist, Pennsylvania Water Science Center
Education and Certifications
M.S., Ecology, Colorado State University, 2021
B.S., Environmental Sciences and Geology, University of Wisconsin-Madison, 2019
Science and Products
Legacy sediment as a potential source of orthophosphate: Preliminary conceptual and geochemical models for the Susquehanna River, Chesapeake Bay watershed, USA Legacy sediment as a potential source of orthophosphate: Preliminary conceptual and geochemical models for the Susquehanna River, Chesapeake Bay watershed, USA
York County Sediment and Nutrient Monitoring
Susquehanna River and Basin
Pennsylvania Super Gages
Calibration data and model archive summaries for suspended-sediment, total nitrogen, and total phosphorus concentration surrogate models at USGS station 01575900, Chiques Creek near Marietta, Pennsylvania, 2021-2023 Calibration data and model archive summaries for suspended-sediment, total nitrogen, and total phosphorus concentration surrogate models at USGS station 01575900, Chiques Creek near Marietta, Pennsylvania, 2021-2023
Calibration data and model archive summaries for suspended-sediment, total nitrogen, and total phosphorus concentration surrogate models in York County, Pennsylvania, 2019-2023 (ver. 2.0, May 2024) Calibration data and model archive summaries for suspended-sediment, total nitrogen, and total phosphorus concentration surrogate models in York County, Pennsylvania, 2019-2023 (ver. 2.0, May 2024)
Surrogate regression models for computation of time series suspended-sediment, Delaware River Basin NGWOS, 2019 through 2022 Surrogate regression models for computation of time series suspended-sediment, Delaware River Basin NGWOS, 2019 through 2022
Autonomous Underwater Vehicle Water-Quality and Sonar Measurements alongside Conductivity, Temperature and Depth Measurements in the Delaware River near Philadelphia, Pennsylvania, 2021 Autonomous Underwater Vehicle Water-Quality and Sonar Measurements alongside Conductivity, Temperature and Depth Measurements in the Delaware River near Philadelphia, Pennsylvania, 2021

A tile map of the U.S. showing mean daily stream temperature for the 5 USGS stream sites with the longest daily temperature records in each U.S. state. The oldest site, in Philadelphia, Pennsylvania, began collecting data in October 1964.
York County Water Quality Dashboard York County Water Quality Dashboard
Science and Products
Legacy sediment as a potential source of orthophosphate: Preliminary conceptual and geochemical models for the Susquehanna River, Chesapeake Bay watershed, USA Legacy sediment as a potential source of orthophosphate: Preliminary conceptual and geochemical models for the Susquehanna River, Chesapeake Bay watershed, USA
York County Sediment and Nutrient Monitoring
Susquehanna River and Basin
Pennsylvania Super Gages
Calibration data and model archive summaries for suspended-sediment, total nitrogen, and total phosphorus concentration surrogate models at USGS station 01575900, Chiques Creek near Marietta, Pennsylvania, 2021-2023 Calibration data and model archive summaries for suspended-sediment, total nitrogen, and total phosphorus concentration surrogate models at USGS station 01575900, Chiques Creek near Marietta, Pennsylvania, 2021-2023
Calibration data and model archive summaries for suspended-sediment, total nitrogen, and total phosphorus concentration surrogate models in York County, Pennsylvania, 2019-2023 (ver. 2.0, May 2024) Calibration data and model archive summaries for suspended-sediment, total nitrogen, and total phosphorus concentration surrogate models in York County, Pennsylvania, 2019-2023 (ver. 2.0, May 2024)
Surrogate regression models for computation of time series suspended-sediment, Delaware River Basin NGWOS, 2019 through 2022 Surrogate regression models for computation of time series suspended-sediment, Delaware River Basin NGWOS, 2019 through 2022
Autonomous Underwater Vehicle Water-Quality and Sonar Measurements alongside Conductivity, Temperature and Depth Measurements in the Delaware River near Philadelphia, Pennsylvania, 2021 Autonomous Underwater Vehicle Water-Quality and Sonar Measurements alongside Conductivity, Temperature and Depth Measurements in the Delaware River near Philadelphia, Pennsylvania, 2021

A tile map of the U.S. showing mean daily stream temperature for the 5 USGS stream sites with the longest daily temperature records in each U.S. state. The oldest site, in Philadelphia, Pennsylvania, began collecting data in October 1964.
A tile map of the U.S. showing mean daily stream temperature for the 5 USGS stream sites with the longest daily temperature records in each U.S. state. The oldest site, in Philadelphia, Pennsylvania, began collecting data in October 1964.