Search
BLM | 2021
Landslides are a major geologic hazard in Oregon. Landslide inventory mapping helps resource managers understand the spatial pattern of existing landslides and provides information to…
BLM | 2021
Coastal erosion, exacerbated by sea-level rise, threatens both infrastructure and natural areas around the world. The King Range National Conservation Area (NCA) is vulnerable to such erosion effects…
BLM | 2021
The emergent proliferation of Synthetic Aperture Radar (SAR) imaging systems, related advancements in image processing and exploitation capabilities, and the increasing availability of analysis-ready…
BLM | 2021
Public lands across the West contain myriad Native American cultural sites that often include surficial stone features such as rings, alignments, and cairns. In 2018, BLM archaeologists from Wyoming’…
BLM | 2021
The invasion of exotic annual grasses is a widespread problem across the western United States. Of particular concern is cheatgrass (Bromus tectorum), which produces continuous mats of fine, highly…
BLM | 2011
Lidar and aerial photography are valuable tools for preliminary investigations by cadastral surveyors. Boundary disputes are often decided using survey information. Remote sensing data…
OSM | 2011
The mission of the Office of Surface Mining (OSM) is to carry out the requirements of the Surface Mining Control and Reclamation Act (SMCRA) in cooperation with States and Tribes. A primary objective…
OSM | 2011
A mining permit describes the lands that will be affected by coal mining activities. The SMCRA inspector ensures that the mining and associated operations are within these approved boundaries…
OSM | 2011
Water diversions are constructed to prevent and control water runoff and erosion problems associated with the disturbed area. Water diversions constructed on mine sites must be the same in…
BLM | 2011
The Pacific Northwest Hydrography Framework is sponsoring a working group tasked to evaluate the use of lidar-derived DEMs as a principal data source for updating the National Hydrology Database (NHD…
BLM | 2011
The Oregon BLM State Office developed a semi-automated technique to map juniper distribution for specific project areas. The technique uses 0.5 meter color infra-red NAIP imagery to identify…
BLM | 2011
The famous Laetoli footprints were made by a human ancestor 3.56 million years ago in the Rift Valley of Tanzania and are the earliest fossil evidence of bipedalism in our ancestors. The trail…