Measuring Snow Depth from Uncrewed Aircraft Systems Lidar

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Approximately 2 billion people are expected to experience diminished water supplies because of seasonal snowpack decline this century.  Over the last 50 years, particularly in some regions of the western U.S., declines in annual snowpack levels have contributed to reduced streamflow levels, a trend supported by both models and in situ observations (USGS,

Remote Sensing of Streamflow in Alaskan Rivers

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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.

Topobathymetric Digital Elevation Model for Pacific Atoll at Risk from Inundation

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The lack of Pacific Islands topographic (land elevation) and bathymetric (water depth) information led Department of the Interior (DOI) researchers to use advanced remote sensing technologies to develop a topobathymetric digital elevation model (TBDEM) for Majuro Atoll, Republic of the Marshall Islands. With a maximum natural elevation of only 3 meters (m), Majuro Atoll is extremely vulnerable to changes in sea level, tsunamis, storm surge, and coastal flooding.

Louisiana Barrier Island Habitat Mapping and Change Assessment

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Barrier islands provide numerous invaluable ecosystem services, including storm protection and erosion control for the mainland, habitat for fish and wildlife, salinity regulation in estuaries, carbon sequestration in marsh, recreation, and tourism. These islands are dynamic environments due to their position at the land-sea interface.

Cottonwood-Wilberg Mine, Emery County, Utah Reclamation

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The OSMRE Western Region worked with the State of Utah Division of Oil, Gas, and Mining to monitor reclamation efforts at Cottonwood-Wilberg Mine in Emery County, Utah, using remote sensing change detection of historical photography and land use records.  OSMRE purchased high-resolution lidar and orthophotography from Juniper Unmanned of the site before major earthwork comme

Under Trees and Water at Crater Lake National Park

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The 2010 lidar survey of Crater Lake National Park, Oregon, penetrated forested terrain to reveal surface features of the ignimbrite (pyroclastic flow deposit) from the climactic caldera-forming eruption in spectacular detail.  This eruption occurred over 7,000 years ago, culminating in the collapse of Mt. Mazama to form Crater Lake.  In late July, Charlie Bacon and Joel Robinson of the U.S.