Digital elevation models (DEMs) of the lower Elwha River, Washington, water year 2013 to 2016
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 data product was created because the aerial lidar data had gaps near the river, which the SfM data were able to close. The georeferenced DEMs were used to assess the river's responses to the removal of the Elwha and the Glines Canyon dams upstream from the study area.
Complete Metadata
| accessLevel | public |
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[
"010:12"
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| contactPoint |
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"fn": "Andrew C Ritchie",
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"hasEmail": "mailto:aritchie@usgs.gov"
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|
| description | 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 data product was created because the aerial lidar data had gaps near the river, which the SfM data were able to close. The georeferenced DEMs were used to assess the river's responses to the removal of the Elwha and the Glines Canyon dams upstream from the study area. |
| distribution |
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| identifier | http://datainventory.doi.gov/id/dataset/USGS_5a035e8be4b0036f58f947c7 |
| keyword |
[
"CMGP",
"Coastal and Marine Geology Program",
"Elwha Dam (historical)",
"Elwha River",
"Glines Canyon Dam (historical)",
"NPS",
"National Park Service",
"PCMSC",
"Pacific Coastal and Marine Science Center",
"State of Washington",
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"U.S. Geological Survey",
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"digital elevation models",
"field inventory and monitoring",
"image collections",
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"lidar",
"river bank",
"river channel",
"river reaches",
"river systems",
"sediment deposition",
"time series datasets",
"topographic maps"
]
|
| modified | 2020-10-19T00:00:00Z |
| publisher |
{
"name": "U.S. Geological Survey",
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|
| spatial | -123.614549, 47.959409, -123.541697, 48.145105 |
| theme |
[
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]
|
| title | Digital elevation models (DEMs) of the lower Elwha River, Washington, water year 2013 to 2016 |
