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This data release provides 15-minute data of suspended-sediment concentration and fine (less than 0.0625 mm) suspended-sediment concentration during the removal of 2 large dams on the Elwha River from September 2011 to September 2016. Data are derived from regression relations with turbidity at the USGS gaging station Elwha River at the Diversion (no.12046260).
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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...
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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...
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This release contains data collected to study the impacts of vegetation removal on the condition of Lake Ozette Sockeye spawning habitat. From October 2018 to May 2019, continuous sediment temperature and subsurface dissolved oxygen were collected at sites near Olsen's Beach on the eastern shore of Lake Ozette, WA. Data were collected from 3 sites; a spawning control (SC) where sockeye currently return to spawn; a vegetation control (VC) where nearshore vegetation inhibits the amount of sockeye spawning; and a vegetation treatment (TR) area where nearshore vegetation was manually removed to assess if habitat quality can be improved. In addition to the continuous data, particle size data from the nearshore were determined...
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Floodplain characteristics were quantified for the Elwha River in Olympic National Park, Washington, USA, using orthophoto imagery taken between 1939-2013. Each zipped folder contains a shapefile and its associated metadata record.
Comma-separated values (.csv) file containing data related to mercury concentrations in dragonfly samples from U.S. National Parks collected as part of the Dragonfly Mercury Project (DMP)
Categories: Data, Data Release - Revised; Tags: Acadia National Park, Allegheny Portage Railroad National Historic Site, Amistad National Recreation Area, Apostle Islands National Lakeshore, Appomattox Court House National Historical Park, All tags...
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This dataset includes continuous dissolved oxygen and temperature data from the nearshore of Lake Ozette, WA. Data were collected using a HOBO (U26-001) dissolved oxygen/temperature sensor housed inside a self-contained PVC well screen installed to a depth of 15cm in the lakebed. Data was collected continuously from October 2018 to May 2019. This data was part of a project that studied the impact of removing nearshore vegetation on the quality of spawning habitat of native Lake Ozette sockeye. The study area consisted of 3 areas where dissolved oxygen and temperature were collected. A spawning control (SC) where sockeye currently return to spawn; a vegetation control (VC) where nearshore vegetation inhibits the...
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Daily values of discharge and sediment loads were measured and estimated at U.S. Geological Survey gaging station 12046260, on the Elwha River at the diversion near Port Angeles, Washington. Daily data are reported from September 15, 2011 to September 30, 2016. Specific data include (1) date; (2) discharge; (3) suspended-sediment concentration and one standard-deviation bounds; (4) percentage of fine-grained particles (silts and clays) in suspension; (5) loads of total suspended-sediment, fine-grained particles in suspension, and sand in suspension; (6) gauged bedload for particles between 2-16 mm and greater than 16 mm; and (7) estimated bedload for particles smaller than 2 mm.
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Floodplain characteristics were quantified for the Queets River in Olympic National Park, Washington, USA, using orthophoto imagery taken between 1939-2013. Each zipped folder contains a shapefile and its associated metadata record.
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Comma-separated values (.csv) files containing data related to a National-scale assessment of mercury bioaccumulation in the US National Parks using dragonfly larvae as biosentinels through a citizen science framework.
Categories: Data; Tags: Acadia National Park, Allegheny Portage Railroad National Historic Site, Apostle Islands National Lakeshore, Appomattox Court House National Historical Park, Aquatic Biology, All tags...
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In February 2016 the U.S. Geological Survey, Pacific Coastal and Marine Science Center in cooperation with North Carolina State University and the National Park Service collected multibeam bathymetry and acoustic backscatter data in Lake Crescent located in Olympic National Park, Washington. Data were collected using a Reson 7111 multibeam echosounder pole-mounted to the 36-foot USGS R/V Parke Snavely. These metadata describe the multibeam acoustic-backscatter data file that is included in "LakeCrescent_backscatter_3m_UTM10_NAD83.zip" which is accessible from https://doi.org/10.5066/F7B56GW5.
Often landmark conservation decisions are made despite an incomplete knowledge of system behavior and inexact predictions of how complex ecosystems will respond to management actions. For example, predicting the feasibility and likely effects of restoring top-level carnivores such as the gray wolf (Canis lupus) to North American wilderness areas is hampered by incomplete knowledge of the predator-prey system processes and properties. In such cases, global sensitivity measures, such as Sobol? indices, allow one to quantify the effect of these uncertainties on model predictions. Sobol? indices are calculated by decomposing the variance in model predictions (due to parameter uncertainty) into main effects of model...
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From 2013-16 we deployed 3 motion-sensing cameras paired with hair (DNA)-snaring devices within each of 263 24-square kilometer primary sampling units distributed systematically across the Olympic Peninsula in northwestern Washington. The data set contains detection histories of fishers during each of 3 14-day sampling intervals at each hexagon. The data set also includes detectability and environmental covariates measured at the detection stations and within a 1,262-m buffer inscribed around the detection stations in each hexagon. Reported covariates include the sampling year, Julian date of sampling visit, proportion of 14-day sampling intervals that bait was functional, landscape composition within buffer regions,...
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Particle-size data collected of the upper 25 cm of substrate was collected at 12 sites in October 2018 and May 2019 at Olsen's Beach in Lake Ozette, Clallam County, Washington. At emergent stations, the top 25 cm of substrate was collected using a shovel and was transferred into a bucket. Bulk sediment samples were collected at submergent stations using a McNeil sampler inserted into the lakebed (McNeil and Ahnell, 1964) from which sediment was extracted by hand to a depth of 25 cm below the lakebed and residual water containing suspended sediment was sampled. Particle size distribution of sediment larger than 8 mm was sieved and weighed in the field and sediment less than 8 mm was sent to the USGS Cascades Volcano...


map background search result map search result map Orthomosaic images of the middle and lower Elwha River, Washington, 2012 to 2017 Streamgage measurements, Elwha River, Washington, 2011 to 2016 Suspended sediment concentration data in the Elwha River, Washington, September 2011 to September 2016 Daily sediment loads during and after dam removal in the Elwha River, Washington, 2011 to 2016 Total Mercury Concentrations in Dragonfly Larvae from U.S. National Parks (ver. 7.0, October 2021) Floodplain data from the Hoh, Elwha, Queets, and Quinault Rivers in Olympic National Park, 1939-2013 Floodplain data from the Elwha River in Olympic National Park, 1939-2013 Floodplain data from the Queets River in Olympic National Park, 1939-2013 Fisher (Pekania pennanti) detections and analysis covariates from Washington's Olympic Peninsula, 2013-2016 Mercury Bioaccumulation in US National Parks Using Dragonfly Larvae as Biosentinels, 2009-2018 Multibeam acoustic-backscatter data collected in 2016 for Lake Crescent, Olympic National Park, Washington Dissolved Oxygen, temperature, particle-size distribution, and groundwater flux in the nearshore of Lake Ozette, WA, October 2018 to May 2019 Subsurface dissolved Oxygen and sediment temperature at Lake Ozette, WA, October 2018 to May 2019 Nearshore lake sediment particle-size distribution data, Lake Ozette, WA, October 2018 to May 2019 Floodplain data from the Elwha River in Olympic National Park, 1939-2013 Orthomosaic images of the middle and lower Elwha River, Washington, 2012 to 2017 Floodplain data from the Queets River in Olympic National Park, 1939-2013 Suspended sediment concentration data in the Elwha River, Washington, September 2011 to September 2016 Daily sediment loads during and after dam removal in the Elwha River, Washington, 2011 to 2016 Multibeam acoustic-backscatter data collected in 2016 for Lake Crescent, Olympic National Park, Washington Subsurface dissolved Oxygen and sediment temperature at Lake Ozette, WA, October 2018 to May 2019 Streamgage measurements, Elwha River, Washington, 2011 to 2016 Dissolved Oxygen, temperature, particle-size distribution, and groundwater flux in the nearshore of Lake Ozette, WA, October 2018 to May 2019 Nearshore lake sediment particle-size distribution data, Lake Ozette, WA, October 2018 to May 2019 Floodplain data from the Hoh, Elwha, Queets, and Quinault Rivers in Olympic National Park, 1939-2013 Fisher (Pekania pennanti) detections and analysis covariates from Washington's Olympic Peninsula, 2013-2016 Mercury Bioaccumulation in US National Parks Using Dragonfly Larvae as Biosentinels, 2009-2018 Total Mercury Concentrations in Dragonfly Larvae from U.S. National Parks (ver. 7.0, October 2021)