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
Science and Products
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...
Susquehanna River and Basin
In Pennsylvania, the USGS's water-resources roots date back to the late 1800's, with the initiation of streamflow gaging on the Susquehanna and Delaware Rivers and assessments of groundwater resources near Philadelphia. The USGS Pennsylvania Water Science Center continues to provide scientific information about the water resources of the Susquehanna River Basin, in cooperation with regional and...
Pennsylvania Super Gages
What is a Super Gage? A gage at which continuous flow and water level are determined, along with continuous traditional water-quality (water temperature, specific conductance, pH, dissolved oxygen, and/or turbidity) and either of the following criteria: at least one other less-traditional continuous water-quality parameter (orthophosphate, nitrate concentration) and/or where surrogates (developed...
Timeseries: down/upwards - Long-term daily stream temperatures
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.
Science and Products
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...
Susquehanna River and Basin
In Pennsylvania, the USGS's water-resources roots date back to the late 1800's, with the initiation of streamflow gaging on the Susquehanna and Delaware Rivers and assessments of groundwater resources near Philadelphia. The USGS Pennsylvania Water Science Center continues to provide scientific information about the water resources of the Susquehanna River Basin, in cooperation with regional and...
Pennsylvania Super Gages
What is a Super Gage? A gage at which continuous flow and water level are determined, along with continuous traditional water-quality (water temperature, specific conductance, pH, dissolved oxygen, and/or turbidity) and either of the following criteria: at least one other less-traditional continuous water-quality parameter (orthophosphate, nitrate concentration) and/or where surrogates (developed...
Timeseries: down/upwards - Long-term daily stream temperatures
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.