A5002581793- Hydrology and Sediment Transport Processes
- Hydrology and Watershed Management Studies
- Soil erosion and sediment transport
- Flood Risk Assessment and Management
- Urban Stormwater Management Solutions
- Remote Sensing and LiDAR Applications
- Fish Ecology and Management Studies
- Atmospheric and Environmental Gas Dynamics
- Archaeology and Natural History
- Water Quality and Resources Studies
- Groundwater and Isotope Geochemistry
- Groundwater flow and contamination studies
- Soil and Water Nutrient Dynamics
United States Geological Survey
2018-2024
District of Columbia Water and Sewer Authority
2018-2023
Maryland-Delaware-D.C. Water Science Center
2023
Urban development is a well-known stressor for stream ecosystems, presenting challenge to managers tasked with mitigating its effects. For the past 20 y, streamflow, water quality, geomorphology, and benthic communities were monitored in 5 watersheds Montgomery County, Maryland, USA. This study presents synthesis of multiple studies monitoring efforts area new analysis more recent data document primary lessons learned from monitoring. The include forested control, an urban control...
Abstract Stream geomorphic change is highly spatially variable but critical to landform evolution, human infrastructure, habitat, and watershed pollutant transport. However, measurements process models of streambank erosion floodplain deposition resulting sediment fluxes are currently insufficient predict these rates in all perennial streams over large regions. Here we measured long-term lateral vertical using dendrogeomorphology around the U.S. Mid-Atlantic, then statistically modeled...
Abstract Under‐representations of headwater channels in digital stream networks can result uncertainty the magnitude habitat loss, burial, and watershed function. Increased availability high‐resolution (<2 m) elevation data makes delineation more attainable. In this study, derived from light detection ranging was used to predict ephemeral across a forested urban Maryland Piedmont USA. A method developed using topographic openness (TO) wetness index remotely extent networks. Predicted were...
Floodplains provide critical ecosystem services to people by regulating floodwaters and retaining sediments nutrients. Geospatial analyses, field data collection, modeling were integrated quantify a portfolio of that floodplains downstream communities within the Chesapeake Bay Delaware River watersheds. The included floodplain sediment nutrient retention flood regulation. Sediment quantified valued for all non-tidal wadable streams in Predicted nitrogen fluxes from measurements streambanks...
Abstract Broad‐scale mapping of stream channel and floodplain geomorphic metrics is critical to improve the understanding change, biogeochemical processes, riverine habitat quality, opportunities for management intervention. The Floodplain Channel Evaluation Tool (FACET) was developed provide an open‐source tool automated processing digital elevation models (DEMs) generate regional‐scale estimates bank height, width, a suite other fluvial dimensions that can be summarized at reach‐ or...
Headwater streams can contribute significant amounts of fine sediment to downstream waterways, especially when severely eroded and incised. Potential upstream source identification is crucial for effective management water quality, aquatic habitat, loads in a watershed. This study explored topographic openness (TO) derived from 1-m lidar its ability predict incision headwater remotely detect changes over time. Field surveys were conducted one forested two recently urbanized watersheds the...
Stream morphology is affected by changes on the surrounding landscape. Understanding effects of urbanization stream a critical factor for land managers to maintain and improve vulnerable corridors in urbanizing landscapes. Stormwater practices are used urban landscapes manage runoff volumes peak flows, potentially mitigating alterations flow regime that drive channel morphology. However, there remains paucity long-term studies assessing watershed-scale relationships between where green...
First posted March 24, 2021 For additional information, contact: Director, MD-DE-DC Water Science CenterU.S. Geological Survey5522 Research Park DriveBaltimore, MD 21228 Soil and groundwater at the Badger Army Ammunition Plant (BAAP), Sauk County, Wisconsin, were affected by several contaminants as a result of production waste disposal practices common during its operation from 1942 to 1975. Three distinct plumes contaminated originate on BAAP property extend off-site, identified previous...