Migratory species depend on a chain of habitats for survival, including breeding habitats, overwintering sites, and migratory stopover locations. Barrier islands in the northern Gulf of Mexico provide habitat for all three of these life-history phases and are important habitat for many shorebird species, such as Red Knots, Piping Plovers, and Western Sandpipers.
Carbonate precipitation can occur where groundwater enters lakes and supplies chemicals missing from the lake, creating carbonate mounds called tufa mounds or microbialites. These precipitates can often be associated with microbes that either create micro-environments that encourage precipitation or act as templates for precipitation.
Unmanned Aircraft Systems-based Remote Sensing of River Discharge Using Bathymetric Lidar and Thermal Particle Image Velocimetry
The USGS is developing innovative technologies and approaches for measuring river discharge using remotely sensed data. Given the expense associated with remote sensing from conventional aerial platforms (e.g., helicopter, airplane), unmanned aircraft systems (UAS) offer hydrographers a lower cost alternative for data acquisition.
Obtaining timely, accurate information on streamflow in Alaska’s rivers is difficult because gaging stations are sparse, with many located in remote inaccessible areas. Even for established gages, the maintenance and periodic measurements required to operate a gage are logistically challenging and can place personnel at risk, particularly during high flows.
The USGS Dakota Water Science Center is conducting high-resolution hydrographic mapping on two additional study areas in southeastern South Dakota.
As part of a Natural Resource Damage Assessment settlement related to contaminant releases from the Molycorp/Questa Molybdenum mine, subalpine fens, wetlands, and associated stream habitat for the native Rio Grande cutthroat trout are being restored in high-altitude headwaters of Bitter Creek, New Mexico.
The National Map Corps (TNMCorps), a crowdsourced mapping project, relies on volunteers to assist the USGS National Geospatial Program by collecting and editing man-made structures data for The National Map. Through their participation, volunteers make important contributions to the USGS’s ability to provide the Nation with accurate mapping information.
BOR is a key partner in the Trinity River Restoration Program (TRRP), located in far northern California. Remote sensing for the TRRP includes annual high-resolution aerial photography (0.5-foot pixel resolution), which provides a standard point of view for detecting morphological and vegetation changes to the river channel and floodplain.
The Atlantic Marine Assessment Program for Protected Species (AMAPPS) II is the continuation of a study to assess the abundance, distribution, ecology, and behavior of marine mammals, sea turtles, and seabirds throughout the U.S. Atlantic Outer Continental Shelf (OCS).
A decommissioned landfill located on BLM-managed land in Fairplay, Colorado, was found to be leeching chemicals into the groundwater.