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Federal
Digital terrain model of upper North Fork Toutle River valley, Washington, derived from historical topographic maps recent views
Department of the Interior —
This digital terrain model represents historical elevations along the valley of the North Fork Toutle River upstream of its confluence with the Green River in Cowlitz... -
Federal
Digital elevation models of Mount St. Helens crater and upper North Fork Toutle River basin, based on 1987 and 1999 airborne photogrammetry surveys Digital elevation models of Mount St. Helens crater and upper North Fork Toutle River basin, based on 1987 and 1999 airborne photogrammetry surveys Digital elevation models of Mount St. Helens crater and upper North Fork Toutle River basin, based on 1987 and 1999 airborne photogrammetry surveys recent views
Department of the Interior —
The lateral blast, debris avalanche, and lahars of the May 18th, 1980, eruption of Mount St. Helens, Washington, dramatically altered the surrounding landscape. Lava... -
Federal
High-resolution digital elevation model of Mount St. Helens and upper North Fork Toutle River basin, based on airborne lidar surveys of July-September, 2017 recent views
Department of the Interior —
The lateral blast, debris avalanche, and lahars of the May 18th, 1980, eruption of Mount St. Helens, Washington, dramatically altered the surrounding landscape. Lava... -
Federal
High-Resolution Aeromagnetic Survey Over Cascade Locks, Oregon, and Surrounding Areas recent views
Department of the Interior —
This data release provides access to a low-altitude aeromagnetic survey flown over a part of the Cascade Range of the US Pacific Northwest, approximately centered... -
Federal
Digital terrain models of Spirit Lake blockage and Mount St. Helens debris avalanche, based on 1980-2018 airborne photogrammetry surveys recent views
Department of the Interior —
The lateral blast, debris avalanche, pyroclastic flows, and lahars of the May 18th, 1980, eruption of Mount St. Helens, Washington, dramatically altered the... -
Federal
Digital elevation models of upper North Fork Toutle River near Mount St. Helens, based on 2006-2014 airborne lidar surveys recent views
Department of the Interior —
The lateral blast, debris avalanche, and lahars of the May 18th, 1980, eruption of Mount St. Helens, Washington, dramatically altered the surrounding landscape. Lava... -
Federal
Cascade torrent salamander (Rhyacotriton cascadae) surveys in Oregon and Washington 2022 recent views
Department of the Interior —
The US Fish and Wildlife Service (USFWS) is evaluating the status of the Cascade torrent salamander (Rhyacotriton cascadae) across its range to determine whether the... -
Federal
Digital elevation model of South Fork Toutle River, Mount St. Helens, based on June–July 1980 airborne photogrammetry recent views
Department of the Interior —
The lateral blast, debris avalanche, and lahars of the May 18th, 1980, eruption of Mount St. Helens, Washington, dramatically altered the surrounding landscape. The... -
Federal
August, 2022, airborne lidar survey of Mount St. Helens crater, upper North Fork Toutle River, and South Fork Toutle River recent views
Department of the Interior —
The lateral blast, debris avalanche, and lahars of the May 18th, 1980, eruption of Mount St. Helens, Washington, dramatically altered the surrounding landscape. Lava...