National Research Program
NRP scientists study contaminants, water quality, and groundwater and surface water in order to better understand the Nation's water supply.
Water and Climate
NRP scientists study the link between climate change and the hydrologic cycle.
Water, Energy, and Food
NRP scientists study hydrologic processes as they relate to energy extraction and agricultural practices.
Water and Ecosystems
NRP scientsts use various hydrologic models to understand biogeochemical changes in ecosystems.
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The USGS National Research Program (NRP), part of the USGS Water Mission Area, conducts research to develop and disseminate science-based information and tools needed for a fundamental understanding of the processes that affect the availability, movement, and quality of the Nation’s water resources.Learn more about NRP
Aquatic Systems Branch scientists analyze rings of riparian trees relating tree growth and establishment to historical flow. We then use the tree rings to reconstruct the flow in past centuries. Flow reconstructions discover the frequency and magnitude of past droughts and floods—information that is essential for management of rivers and water supplies. We also use downscaled climate...
Objectives: To understand the dominant drivers of carbon fluxes in different tidal wetlands across different time and spatial scales; To quantify the values and uncertainties in carbon sequestration rates in different tidal wetlands.
Objectives: We aim to understand and predict the effects of climate warming and permafrost thaw on : (1) lakes and wetlands, (2) groundwater, (3) soil water, and (4) rivers; We develop and apply new modeling tools and approaches to simulate the interplay between permafrost and hydrology.
The USGS has been a leader in the development of hydrologic and geochemical simulation models since the 1960's. USGS models are widely used to predict responses of hydrologic systems to changing stresses, such as increases in precipitation or ground-water pumping rates, as well as to predict the fate and movement of solutes and contaminants in water.
The HYDROTHERM computer program simulates multi-phase ground-water flow and associated thermal energy transport in three dimensions. It can handle high fluid pressures, up to 1 x 10^9 Pa (104 atm), and high temperatures, up to 1,200 °C.
The USGS Groundwater Age Mixtures and Contaminant Trends Tool can be used to explore the effects of basic aquifer properties and well configurations on groundwater age mixtures in groundwater discharge and on contaminant trends from varying nonpoint-source contaminant input scenarios.
Exploration and Graphics for RivEr Trends (EGRET) is an R-package for the analysis of long-term changes in water quality and streamflow, including the water-quality method Weighted Regressions on Time, Discharge, and Season (WRTDS).
The Precipitation-Runoff Modeling System (PRMS) is a deterministic, distributed-parameter, physical process based modeling system developed to evaluate the response of various combinations of climate and land use on streamflow and general watershed hydrology.
The U.S. Geological Survey’s (USGS) Multi-Dimensional Surface-Water Modeling System (MD_SWMS) is a pre- and post-processing application for computational models of surface-water hydraulics.
Ground-water and Surface-water FLOW (GSFLOW) is used to simulate coupled ground-water and surface-water resources.
JJ Thordsen (USGS) and a wireline operator retrieving downhole vacuum sampler from a characterization well near a CO2 injection well at Citronelle oil field, Alabama.
Presents descriptions of the USGS Precipitation Runoff Modeling System (PRMS) Surface-Runoff modules, which compute Hortonian surface runoff, soil infiltration, and impervious surface and surface depression storage and flows.
Presents descriptions of the USGS Precipitation Runoff Modeling System (PRMS) Summary modules.
Presents descriptions of the USGS Precipitation Runoff Modeling System (PRMS) Soilzone module.
Presents descriptions of the USGS Precipitation Runoff Modeling System (PRMS) streamflow routing modules.
Presents descriptions of the USGS Precipitation Runoff Modeling System (PRMS) cascading-flow computation option, which allows for reinfiltration across the land surface, shallow subsurface, and saturated zone
USGS conducts water quality sampling to describe changes in water quality along the deep channel of the San Francisco Bay-Delta system. Sampling includes continuious sampling and discrete sampling. Here a water discrete water sample is collected using a Niskin sampler at sunset in north San Francisco Bay.
While freshwater ecosystems cover only a small amount of the land surface in Alaska, they transport and emit a significant amount of carbon, according to new U.S. Geological Survey research. An invited feature article for Ecological Applications provides the first-ever major aquatic carbon flux assessment for the entire state. Carbon flux refers to the rate of carbon transfer between pools.
The new table includes both standard and conventional atomic weights values to clarify that many atomic weights have natural variation and to provide single values for chemical education use
Changing Times, Changing Stories: Climate Change Perspectives Vary Notably Among Generations in Subarctic Alaska
New research from the U.S. Geological Survey and partners illustrates how climate change is perceived among different generations of indigenous residents in subarctic Alaska. While all subjects agreed climate change is occurring, the older participants observed more overall changes than the younger demographic.
Mercury contamination is widespread, at various levels across western North America in air, soil, sediment, plants, fish and wildlife.
TECHNICAL ANNOUNCEMENT: Monitoring, verification and accounting are key parts to demonstrating the feasibility or success of integrated carbon capture and storage technologies.
To gain insights into the risks associated with uranium mining and processing, U.S. Geological Survey scientists are investigating how uranium moves into and up food chains.
The thawing of the planet’s permafrost is replumbing arctic environments, creating several hydrologic consequences and possibly some opportunities according to a new study published in Vadose Zone.