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Digital elevation models (DEMs) of the lower Elwha River, Washington, were created by synthesizing lidar and PlaneCam Structure-from-Motion (SfM) data. Lidar and still digital photographs were collected by airplane during surveys from 2012 to 2016. The digital photographs were used to create a SfM digital surface model. Each DEM represents the ending conditions for that water year (for example, the 2013 DEM represents conditions at approximately September 30, 2013). The final DEMs, presented here, were created from the most recent lidar before September 30 of a given year, supplemented with an error-corrected SfM model from a low-flow summer Elwha PlaneCam flight as close to 30 September as possible. This synthetic...
Tags: CMGP,
Coastal and Marine Geology Program,
Elwha Dam (historical),
Elwha River,
Glines Canyon Dam (historical), All tags...
NPS,
National Park Service,
PCMSC,
Pacific Coastal and Marine Science Center,
State of Washington,
Substrate,
U.S. Bureau of Reclamation,
U.S. Geological Survey,
USBR,
USGS,
digital elevation models,
field inventory and monitoring,
image collections,
image mosaics,
inlandWaters,
lidar,
river bank,
river channel,
river reaches,
river systems,
sediment deposition,
time series datasets,
topographic maps, Fewer tags
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This dataset presents 28 georeferenced orthomosaic images of the middle and lower reaches of the Elwha River. Each mosaic image was created by stitching together thousands of individual photographs that were matched based on numerous unique tie points shared by the photographs. The individual photographs were taken by a plane-mounted camera during multiple flights over the study area spanning 2012 to 2017. Because each mosaic is orthogonal to the earth's surface and is georeferenced to real-world coordinates, changes to the river channel and surrounding morphology can be seen and measured, including channel width, river braiding, bar formation, and other metrics to assess responses of the river to the removal of...
Tags: CMGP,
Coastal and Marine Geology Program,
Elwha Dam (historical),
Elwha River,
Glines Canyon Dam (historical), All tags...
Lake Aldwell (historical),
Lake Mills (historical),
NPS,
National Park Service,
Olympic National Park,
PCMSC,
Pacific Coastal and Marine Science Center,
State of Washington,
Substrate,
U.S. Bureau of Reclamation,
U.S. Geological Survey,
USBR,
USGS,
aerial photography,
digital elevation models,
field inventory and monitoring,
image collections,
image mosaics,
inlandWaters,
lidar,
remote sensing,
river bank,
river channel,
river reaches,
river systems,
sediment deposition,
time series datasets,
topographic maps, Fewer tags
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Streamgage levels on the Elwha River were measured from 2011 to 2016. These measurements show the height of the river's water surface, both in meters relative to the stream bed, as well as in meters relative to vertical geographic coordinates. Measurements were collected using a Global Water WL16 battery-operated vented water level logger in a hardened casing. The instrument was installed on October 17, 2011 on the left bank of the Elwha River at a power line crossing above the Elwha Surface Water Intake (at approximately river kilometer 5.6), which is downstream of the (now historical) Elwha Dam site. Data collection ended May 12, 2016. The data were collected as part of a study investigating responses of the Elwha...
Categories: Data;
Tags: CMGP,
Coastal and Marine Geology Program,
Elwha River,
Elwha River Dam (historical),
Glines Canyon Dam (historical), All tags...
Lake Aldwell (historical),
Lake Mills (historical),
Olympic National Park,
PCMSC,
Pacific Coastal and Marine Science Center,
State of Washington,
Substrate,
U.S. Bureau of Reclamation,
U.S. Geological Survey,
USBR,
USGS,
field inventory and monitoring,
inlandWaters,
river bank,
river channel,
river reaches,
river systems,
sediment deposition,
stream-gage measurement,
time series datasets, Fewer tags
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Presented here is a point cloud collected by the U.S. Geological Survey (USGS) using an oblique plane-mounted camera system, covering the area of the Mud Creek landslide on California State Route 1 (SR1), Mud Creek, Big Sur, California. The point cloud is referenced to previously published lidar data and contains RGB information as well as XYZ. Point cloud coordinates are in NAD83 UTM Zone 10 meters. Imagery was collected with a Nikon D800 camera in RAW format and processed using structure-from-motion photogrammetry with Agisoft PhotoScan version 1.2.8 through 1.3.2. Pointclouds were clipped to an AOI using LASTools. The AOI was created from a KMZ in Google Earth and transformed to a shapefile using ArcMap 10.5.
Tags: Bathymetry and Elevation,
Big Sur,
CMHRP,
California,
Cape San Martin, All tags...
Central California Coastal,
Coastal and Marine Hazards and Resources Program,
Monterey,
PCMSC,
Pacific Coastal and Marine Science Center,
U.S. Geological Survey,
USGS,
United States,
Villa Creek,
aerial and satellite photography,
aerial photography,
agents of coastal change,
anthropogenic agents of coastal change,
coastal change hazards topics,
coastal landslides,
coastal landsliding,
coastal processes,
coastal processes,
coastal sediment budget,
coastal zone management,
effects of coastal change,
elevation,
geomorphology,
geoscientificInformation,
hazards,
hazards and disasters,
human responses to coastal change,
image analysis,
image collections,
imageryBaseMapsEarthCover,
landslides,
remote sensing,
topography,
transportation, Fewer tags
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This portion of the data release presents a digital surface model (DSM) and hillshade of Whiskeytown Lake and the surrounding area derived from Structure from Motion (SfM) processing of aerial imagery acquired on 2018-12-02. Unlike a digital elevation model (DEM), the DSM represents the elevation of the highest object within the bounds of a cell. Vegetation, buildings and other objects have not been removed from the data. In addition, data artifacts resulting from noise and vegetation in the original imagery have not been removed. However, in unvegetated areas such as reservoir shorelines and deltas, the DSM is equivalent to a DEM because it represents the ground surface elevation. The raw imagery used to create...
Tags: Bathymetry and Elevation,
CMHRP,
Carr fire,
Coastal and Marine Hazards and Resources Program,
PCMSC, All tags...
Pacific Coastal and Marine Science Center,
State of California,
U.S. Geological Survey,
USGS,
Whiskeytown Lake,
Whiskeytown-Shasta-Trinity National Recreation Area,
aerial photography,
elevation,
fires,
fragile ecosystems,
geomorphology,
image mosaics,
photography,
remote sensing,
remote sensing,
reservoir,
topographic maps,
topography,
wildfires, Fewer tags
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