Geospatial Analyses and Applications Core Technology Team
Newsletter: October 2023-March 2024
Fostering Diversity in Science
Scientists ponder: How well are ag practices helping the Chesapeake Bay?
Publications
Discover Chesapeake related science in reports and journal articles authored by USGS scientists
Discover Chesapeake related science in reports and journal articles authored by USGS scientists
Chesapeake Bay Activities
The Chesapeake Bay is our Nation’s largest estuary and provides over $100 billion in annual economic value. The USGS works with Federal, State, local, and academic partners to provide research and monitoring and to communicate results to inform management for the Chesapeake and other important landscapes across the Nation.
Wastewater reuse may be detrimental to smallmouth bass
Wastewater reuse may be detrimental to smallmouth bass
Wastewater effluent often contains chemicals that, when chronically present, can affect the health of aquatic organisms.
Phosphorus in the Susquehanna River may be tied to legacy sediment and changing pH
Phosphorus in the Susquehanna River may be tied to legacy sediment and changing pH
In addition to nutrient pollution from agricultural and urban areas, this river has historically had a slightly acidic pH (<7) due to acid drainage from widespread coal mining and atmospheric deposition.
Quick Links
Quick Links
Learn more about USGS science activities in the Bay from our Science Strategy. Additional summaries of the USGS Chesapeake Bay Activities are available in the science topics section.
News
Chesapeake Bay Activities Newsletter October 2023-March 2024
Chesapeake Bay Activities Newsletter October 2023-March 2024
Fostering Diversity in Science
Fostering Diversity in Science
Scientists ponder: How well are ag practices helping the Chesapeake Bay?
Scientists ponder: How well are ag practices helping the Chesapeake Bay?
Publications
Integrated science for the study of microplastics in the environment—A strategic science vision for the U.S. Geological Survey
Executive SummaryEvidence of the widespread occurrence of microplastics throughout our environment and exposure to humans and other organisms over the past decade has led to questions about the possibility of health hazards and mitigation of exposures. This document discusses nanoplastics as well as microplastics (referred to solely as microplastics); the microplastics have a range from 1 micromet
Genetic structure of restored Brook Trout populations in the Southern Appalachian Mountains indicates successful reintroductions
Wildlife reintroduction is an important conservation tool for threatened species, yet identifying appropriate source populations poses a challenge. In particular, the possibility of outbreeding depression is cited as a constraint limiting the range of candidate source populations for translocation. When multiple source lineages are mixed during reintroduction, genetic monitoring is necessary to ev
The effects of wastewater reuse on smallmouth bass (Micropterus dolomieu) relative abundance in the Shenandoah River Watershed, USA
Municipal and industrial wastewater effluent is an important source of water for lotic systems, especially during periods of low flow. The accumulated wastewater effluent flows—expressed as a percentage of total streamflow (ACCWW%)—contain chemical mixtures that pose a risk to aquatic life; fish may be particularly vulnerable when chronically exposed. Although there has been considerable focus on
Science
New insights for reducing nutrient and sediment loads in agricultural watersheds prioritized for management activities
Agricultural activities and natural factors may offset nutrient and sediment reductions from management activities.
Phosphorus in the Susquehanna River may be tied to legacy sediment and changing pH
The Susquehanna River is the predominant source of freshwater and nutrients entering the Chesapeake Bay.
Wastewater reuse may be detrimental to smallmouth bass abundance in the Shenandoah River Watershed
Issue: Municipal and industrial wastewater effluent is an important source of water for streams and rivers, especially during periods of low flow. The reuse of wastewater effluent may become even more important if climate change exacerbates low streamflow and drought conditions. However, wastewater effluent often contains chemicals that, when chronically present, can affect the health of aquatic...