My work focuses on the collection of surface water flow and continuous water quality data. More recently this work has been extended to research the use of using surrogate models to estimate concentrations and loads for several different water quality constituents, including suspended sediment and chloride.
I've participated on several high-water mark and surveying campaigns related to large flood events following severe storms, including Hurricane Maria in Puerto Rico.
CURRENT PROJECTS
- Continuous Nitrate and DOC measurements
- Delaware River Basin Next Generation Observing System (NGWOS)
- Seepage investigations in and around Willow Grove Naval Air Station to identify streamflow losses
Professional Experience
2003 to present - Hydrologic Technician, US Geological Survey, Pennsylvania Water Science Center.
Education and Certifications
B.S. in Geology, West Chester University of Pennsylvania, 2004
Science and Products
Next Generation Water Observing System: Delaware River Basin
Streamflow Estimation from Advanced Imaging (LSPIV) in Pennsylvania
Sediment and Stream Health - Pennsylvania
Philadelphia Water Resources Monitoring Program
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 chloride concentrations, Chester County, Pennsylvania (2023)
Autonomous Underwater Vehicle Water-Quality and Sonar Measurements alongside Conductivity, Temperature and Depth Measurements in the Delaware River near Philadelphia, Pennsylvania, 2021
SedCam Model Calibration Imagery Acquired June 2020 to September 2021 at East Branch Brandywine Creek (USGS 01480870)
Surrogate regression models for computation of time series suspended-sediment concentrations, Chester County, Pennsylvania (2020)
Bathymetry and capacity of Chambers Lake, Chester County, Pennsylvania
Determination of time-of-travel, dispersion characteristics, and oxygen reaeration coefficients during low streamflows--Lower Tacony/Frankford Creek, Philadelphia, Pennsylvania
Web Tools
Pennsylvania Real-Time Water Quality
Real-time computed concentrations of water-quality constituents such as suspended sediment and fecal coliform bacteria are calculated using ordinary least squares regression models. The results of these models, along with direct water-quality measurements, can be viewed here as time-series graphs, or downloaded as tabular data.
Science and Products
- Science
Next Generation Water Observing System: Delaware River Basin
The USGS Next Generation Water Observing System (NGWOS) provides high-fidelity, real-time data on water quantity and quality necessary to support modern water prediction and decision support systems for water emergencies and daily water operations. The Delaware River Basin was the first NGWOS basin, providing an opportunity to implement the program in a nationally important, complex interstate...Streamflow Estimation from Advanced Imaging (LSPIV) in Pennsylvania
Pennsylvania Water Science Center and the Next Generation Water Observing Systems (NGWOS) Program are implementing new technologies for streamflow estimation at sites in Pennsylvania where conventional measurement techniques are inadequate.Sediment and Stream Health - Pennsylvania
Sediment in streams, from land surface erosion in watersheds, is an important factor in determining the quality of Pennsylvania's surface waters and of downstream water bodies such as the Delaware Estuary and Chesapeake Bay. The USGS has a long-standing tradition of measuring suspended-sediment concentrations and estimating loads. Recent technological advances allow real-time estimates of...Philadelphia Water Resources Monitoring Program
The Philadelphia Water Department (PWD) and USGS have been working together to create and expand the water-quality monitoring network for Philadelphia. A groundwater level monitoring network web app was also developed. - Data
Surrogate regression models for computation of time series suspended-sediment, Delaware River Basin NGWOS, 2019 through 2022
The U.S. Geological Survey (USGS), as part of the Next Generation Water Observing System (NGWOS) has collected discrete stream samples for analysis of suspended-sediment concentrations at eight real-time streamflow and water-quality monitoring (turbidity and suspended sediment) stations located in Pennsylvania, New Jersey, and New York in the Delaware River Basin. Data were collected from 2019-202Surrogate regression models for computation of time series chloride concentrations, Chester County, Pennsylvania (2023)
In cooperation with state and county agencies, including the Chester County Water Resources Authority (CCWRA), the U.S. Geological Survey (USGS) has collected discrete stream samples for analysis of chloride concentrations at three real-time streamflow and water-quality monitoring (specific conductance) stations located in Chester County, Pennsylvania. Data were collected from 2010-2023 at these sAutonomous Underwater Vehicle Water-Quality and Sonar Measurements alongside Conductivity, Temperature and Depth Measurements in the Delaware River near Philadelphia, Pennsylvania, 2021
These datasets were created in support of the U.S. Geological Survey's (USGS) Next Generation Water Observing System (NGWOS) for the Delaware River Basin pilot study (Eberts, Wagner, and Woodside, 2019). The NGWOS utilizes real-time data, improved computational capabilities, and new technologies such as unmanned aerial vehicles (UAV) and autonomous underwater vehicles (AUV) to provide informationSedCam Model Calibration Imagery Acquired June 2020 to September 2021 at East Branch Brandywine Creek (USGS 01480870)
Two empirical simple linear regression models were developed from SedCam imagery and concurrent physical sediment samples over a 20-month period at the East Branch Brandywine Creek gage (USGS 01480870). The image files included here are a subset, used in the calibration dataset for these regression models. Models relate the explanatory variable, Rmax (maximum digital number of the red band, whiSurrogate regression models for computation of time series suspended-sediment concentrations, Chester County, Pennsylvania (2020)
The U.S. Geological Survey (USGS), in cooperation with the Chester County Water Resources Authority (CCWRA), has collected discrete stream samples for analysis of suspended-sediment concentrations at seven gaging stations where near real-time continuous data on stream discharge, and turbidity have been collected since 2005. Historical regression equations to estimate suspended-sediment concentrati - Maps
Bathymetry and capacity of Chambers Lake, Chester County, Pennsylvania
Introduction Chambers Lake is a manmade reservoir on Birch Run, a tributary to West Branch Brandywine Creek in Chester County, Pennsylvania. The lake was created in 1994 after the completion of Multi-Purpose Dam PA-436F (Hibernia Dam), which was built under the Watershed Protection & Flood Control Prevention Act (U.S. Soil Conservation Service, 1991). Hibernia dam is 1,700 feet upstream from the c - Multimedia
- Publications
Determination of time-of-travel, dispersion characteristics, and oxygen reaeration coefficients during low streamflows--Lower Tacony/Frankford Creek, Philadelphia, Pennsylvania
Time-of-travel, dispersion characteristics, and oxygen reaeration coefficients were determined by use of dye and gas tracing for a 2-mile reach of Tacony/Frankford Creek in Philadelphia, southeastern Pennsylvania. The reach frequently has concentrations of dissolved oxygen (DO) below the water-quality standard of 4 milligrams per liter during warm months. Several large combined sewer overflows (CSAuthorsLisa A. Senior, Matthew C. Gyves - Web Tools
Web Tools
Pennsylvania Real-Time Water Quality
Real-time computed concentrations of water-quality constituents such as suspended sediment and fecal coliform bacteria are calculated using ordinary least squares regression models. The results of these models, along with direct water-quality measurements, can be viewed here as time-series graphs, or downloaded as tabular data.
- News