Filters: Tags: gifford pinchot national forest (X)
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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 over the town of Cascade Locks, Oregon. The Cascade Locks magnetic survey encompasses two large stratovolcanoes of the Cascade Range: Mt. Hood (3426 m) in Oregon and Mt. Adams (3742 m) in Washington. Data were acquired between October 17, 2021, and February 26, 2022, by KBM Resources Group, Thunder Bay, Ontario, Canada, working under contract to the U.S. Geological Survey. The survey is underlain by a diverse magnetic terrane, including Miocene flood basalts of the Columbia River Basalt Group and Tertiary to Quaternary volcanic and intrusive rocks of the...
Categories: Data;
Tags: Cascade Range,
Cascadia,
Clackamas County,
Clark County,
Columbia River Gorge National Scenic Area,
Existing Vegetation stands and non-forest areas. Latest spatial edits were completed 2/11/2008.
Gifford Pinchot National Forest inventoried roadless areas
Boundaries of the Gifford Pinchot National Forest's wilderness areas.
Potential Natural Vegetation Zones. Derived from landform, soils, and elevation data.
This dataset is a subset from a detailed project database used in the development of the Invasive Plant Treatment Project draft Environmental Impact Statement on the Gifford Pinchot National Forest (GPNF). The project database was founded on invasive plant inventories and refined using anecdotal information. The project area (GPNF) was divided into treatment areas that were classified by the type of site (e.g., roads, administrative sites, meadows) and prioritized considering the threat posed by existing invasive species and the potential for effective treatment. Priority sites received scores of 1-High, 2-Moderate, or 3-Low.
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