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Two dams on the Elwha River, Washington State, USA trapped over 20 million m3 of sediment, reducing downstream sediment fluxes and contributing to erosion of the river's coastal delta. The removal of the Elwha and Glines Canyon dams between 2011 and 2014 induced massive increases in river sediment supply and provided an unprecedented opportunity to examine the response of a delta system to changes in sediment supply. The U.S. Geological Survey (USGS) developed an integrated research program aimed at understanding the ecosystem responses following dam removal. The research program included repeated surveys of beach topography, nearshore bathymetry, and surface sediment grain size to quantify changes in delta morphology...
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This part of the data release presents bathymetry data from the Elwha River delta collected in July 2016 using a kayak. The kayak was equipped with a single-beam echosounder and a survey-grade global navigation satellite system (GNSS) receiver.
Tags: Bathymetry and Elevation,
Clallum County,
Echo Sounders,
Elwha River,
GPS (Global Positioning System), All tags...
GPS measurement,
Global Positioning System (GPS) observations,
Olympic Peninsula,
Strait of Juan de Fuca,
Water Depth,
bathymetry,
bathymetry measurement,
elevation,
single-beam echo sounder, Fewer tags
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This data release presents beach topography and nearshore bathymetry data from repeated surveys in northern Monterey Bay, California to document changes in shoreline position and coastal morphology as they relate to episodic (storms), seasonal, and interannual and longer (e.g. El Niño) processes. The ongoing monitoring program was initiated in October 2014 with semi-annual surveys performed in late summer (September or October) and Spring (March). Nearshore bathymetry and topography data were collected along a series of shore-perpendicular transects spaced primarily at 50-250 m intervals between Santa Cruz and Moss Landing, California (fig. 1). The transects were located along sandy stretches of the coastline...
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Bathymetry and Elevation,
CMGP,
Coastal and Marine Geology Program,
Echo Sounders,
GPS (Global Positioning System), All tags...
GPS measurement,
Geophysics,
Global Positioning System (GPS) observations,
LIDAR,
Monterey Bay,
Monterey County,
PCMSC,
Pacific Coastal and Marine Science Center,
Pacific Ocean,
Santa Cruz County,
U.S. Geological Survey,
USGS,
Water Depth,
bathymetry,
bathymetry measurement,
coastal sediment budget,
digital elevation models,
elevation,
single-beam echo sounder,
topographic mapping,
topography, Fewer tags
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This page contains links to the digital elevation models and orthoimages 10-11, one month post-Hurricane Dorian. See main landing page for additional dates and information.
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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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