Marla Stuckey
Science and Products
Next Generation Water Observing System: Delaware River Basin
The USGS Next Generation Water Observing System will provide 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 pilot provides an opportunity to develop the NextGen observing system in a nationally important, complex interstate river...
Delaware River Basin
In Pennsylvania, the USGS's water-resources roots date back to the late 1800's, with the initiation of streamflow gaging on the Delaware and Susquehanna 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 Delaware River Basin, in cooperation with regional and...
Pennsylvania StreamStats
StreamStats is a national web-based application that provides selected water-resource information for Pennsylvania. Users can easily obtain descriptive information, basin characteristics, and streamflow statistics for USGS streamgages and ungaged stream locations throughout the Commonwealth.
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...
Pennsylvania Drought Condition Monitoring
The Pennsylvania Department of Environmental Protection relies upon a number of parameters to monitor water-supply-drought conditions, among which are four parameters displayed herein—precipitation, streamflow, groundwater levels, and the Palmer Drought Severity Index, an indicator of soil moisture dryness.
Surface Water Monitoring
Surface Water Data and Monitoring tools for Pennsylvania
Development of regression equations for the estimation of flood flows at ungaged streams in Pennsylvania
Regression equations, which may be used to estimate flood flows at select annual exceedance probabilities, were developed for ungaged streams in Pennsylvania. The equations were developed using annual peak flow data through water year 2015 and basin characteristics for 285 streamflow gaging stations across Pennsylvania and surrounding states. The...
Roland, Mark A.; Stuckey, Marla H.
Evaluation of the streamgage network for estimating streamflow statistics at ungaged sites in Pennsylvania and the Susquehanna River Basin in Pennsylvania and New York
The current (2015) streamgage network in Pennsylvania and the Susquehanna River Basin in Pennsylvania and New York was evaluated in order to design a network that would meet the hydrologic needs of many partners and serve a variety of purposes and interests, including estimation of streamflow statistics at ungaged sites. This study was done by the...
Sloto, Ronald A.; Stuckey, Marla H.; Hoffman, Scott A.
Estimation of daily mean streamflow for ungaged stream locations in the Delaware River Basin, water years 1960–2010
The ability to characterize baseline streamflow conditions, compare them with current conditions, and assess effects of human activities on streamflow is fundamental to water-management programs addressing water allocation, human-health issues, recreation needs, and establishment of ecological flow criteria. The U.S. Geological Survey, through the...
Stuckey, Marla H.
User’s guide for the Delaware River Basin Streamflow Estimator Tool (DRB-SET)
IntroductionThe Delaware River Basin Streamflow Estimator Tool (DRB-SET) is a tool for the simulation of streamflow at a daily time step for an ungaged stream location in the Delaware River Basin. DRB-SET was developed by the U.S. Geological Survey (USGS) and funded through WaterSMART as part of the National Water Census, a USGS research program...
Stuckey, Marla H.; Ulrich, James E.
Estimation of baseline daily mean streamflows for ungaged locations on Pennsylvania streams, water years 1960-2008
Water-resource managers use daily mean streamflows to generate streamflow statistics and analyze streamflow conditions. An in-depth evaluation of flow regimes to promote instream ecological health often requires streamflow information obtainable only from a time series hydrograph. Historically, it has been difficult to estimate daily mean...
Stuckey, Marla H.; Koerkle, Edward H.; Ulrich, James E.
Selected streamflow statistics for streamgage locations in and near Pennsylvania
Pennsylvania StreamStats--A web-based application for obtaining water-resource-related information
StreamStats is a national web-based Geographic Information System (GIS) application, developed by the U.S. Geological Survey (USGS), in cooperation with Environmental Systems Research Institute, Inc., to provide a variety of water-resource-related information. Users can easily obtain descriptive information, basin characteristics, and streamflow...
Stuckey, Marla H.; Hoffman, Scott A.
Regression Equations for Estimating Flood Flows at Selected Recurrence Intervals for Ungaged Streams in Pennsylvania
Regression equations were developed for estimating flood flows at selected recurrence intervals for ungaged streams in Pennsylvania with drainage areas less than 2,000 square miles. These equations were developed utilizing peak-flow data from 322 streamflow-gaging stations within Pennsylvania and surrounding states. All stations used in the...
Roland, Mark A.; Stuckey, Marla H. User's Guide to the Water-Analysis Screening Tool (WAST): A Tool for Assessing Available Water Resources in Relation to Aquatic-Resource Uses
A water-analysis screening tool (WAST) was developed by the U.S. Geological Survey, in partnership with the Pennsylvania Department of Environmental Protection, to provide an initial screening of areas in the state where potential problems may exist related to the availability of water resources to meet current and future water-use demands. The...
Stuckey, Marla H.; Kiesler, James L. Regression method for estimating long-term mean annual ground-water recharge rates from base flow in Pennsylvania
A method was developed for making estimates of long-term, mean annual ground-water recharge from streamflow data at 80 streamflow-gaging stations in Pennsylvania. The method relates mean annual base-flow yield derived from the streamflow data (as a proxy for recharge) to the climatic, geologic, hydrologic, and physiographic characteristics of the...
Risser, Dennis W.; Thompson, Ronald E.; Stuckey, Marla H. Development of the water-analysis screening tool used in the initial screening for the Pennsylvania State Water Plan update of 2008
The Water Resources Planning Act, Act 220 of 2002, requires the Pennsylvania Department of Environmental Protection (PaDEP) to update the State Water Plan by 2008. As part of this update, a water-analysis screening tool (WAST) was developed by the U.S. Geological Survey, in cooperation with the PaDEP, to provide assistance to the state in the...
Stuckey, Marla H. Analysis of flood-magnitude and flood-frequency data for streamflow-gaging stations in the Delaware and North Branch Susquehanna River Basins in Pennsylvania
The Delaware and North Branch Susquehanna River Basins in Pennsylvania experienced severe flooding as a result of intense rainfall during June 2006. The height of the flood waters on the rivers and tributaries approached or exceeded the peak of record at many locations. Updated flood-magnitude and flood-frequency data for streamflow-gaging...
Roland, Mark A.; Stuckey, Marla H.
The Delaware River Basin Streamflow Estimator Tool (DRB-SET)
The Delaware River Basin Streamflow Estimator Tool (DRB-SET) estimates baseline and altered streamflow at a daily time step for ungaged stream locations in the Delaware River Basin for water years 1960-2010.
The Pennsylvania Baseline Streamflow Estimator (BaSE)
Estimation of Baseline Daily Mean Streamflows for Ungaged Locations on Pennsylvania Streams, Water Years 1960–2008
Water-Analysis Screening Tool (WAST)
Water-Analysis Screening Tool (WAST): A Tool for Assessing Available Water Resources in Relation to Aquatic-Resource Uses
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.
Drought Watch Reduced to 20 Pennsylvania Counties, Drought Warning Continues in 3 Counties
USGS groundwater and surface water monitoring data contributed to the August 21, 2020 drought watch declaration for 16 counties by the Pennsylvania Department of Environmental Protection (PaDEP). The last drought...
USGS Upgrades StreamStats for Pennsylvania
Pennsylvania Staff Responds to Hurricane Isaias
Hurricane Isaias swept over eastern Pennsylvania August 4th and 5th, dumping upwards of 8 inches of rain and resulting in wide-spread flooding. New high flow records included a measured streamflow of 6,920 cubic feet per second in the East Branch Brandywine Creek below Downingtown, Pennsylvania, the highest since the gage was installed almost 50 years ago.
Pennsylvania Storm-Tide Sensor Network Strengthened
Vital coastal storm-tide information needed to help guide storm response efforts following major storms affecting Pennsylvania will be more accessible than ever due to a new monitoring network the U.S. Geological Survey is currently building.