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 at the beginning (October 2018) and end (May 2019) of the study period. Details of data collection methods and data quality, are available in three child items (1) Estimates of groundwater flux from vertical temperature profiles within lakebed sediments at Lake Ozette, WA, October 2018 to April 2019, (2) Nearshore lake sediment particle-size distribution data, Lake Ozette, WA, October 2018 and May 2019, and (3) Subsurface dissolved oxygen and sediment temperature at Lake Ozette, WA, October 2018 to May 2019.

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 at the beginning (October 2018) and end (May 2019) of the study period. Details of data collection methods and data quality, are available in three child items (1) Estimates of groundwater flux from vertical temperature profiles within lakebed sediments at Lake Ozette, WA, October 2018 to April 2019, (2) Nearshore lake sediment particle-size distribution data, Lake Ozette, WA, October 2018 and May 2019, and (3) Subsurface dissolved oxygen and sediment temperature at Lake Ozette, WA, October 2018 to May 2019.

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 Observatory (CVO) sediment laboratory for particle-size distribution analysis. The volume of residual water within the McNeil sampler was measured and its suspended sediment concentration was analyzed at USGS CVO.

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 Observatory (CVO) sediment laboratory for particle-size distribution analysis. The volume of residual water within the McNeil sampler was measured and its suspended sediment concentration was analyzed at USGS CVO.

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 amount of sockeye spawning; and a vegetation treatment (TR) area where nearshore vegetation was manually removed to assess if habitat quality can be improved.

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 amount of sockeye spawning; and a vegetation treatment (TR) area where nearshore vegetation was manually removed to assess if habitat quality can be improved.

This dataset includes all files used to model groundwater-surface water exchange in the nearshore of Lake Ozette, WA, located within Olympic National Park. Sediment temperature data was collected continuously from October 2018 to April 2019 at multiple depths using temperature rods that were installed in the lakebed in a portion of the nearshore on the eastern shoreline of Lake Ozette. Temperature data was collected at depths of 1, 4, 7, 11, and 50 cm, depending on the length of the temperature rod, using internally logging iButton temperature sensors (model DS1922L). 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 estimates of groundwater-surface water exchange were made. 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. Specific discharge across the sediment-water interface was estimated using the 1DTempPro V2 model; a USGS graphical user interface that solves a 1-dimensional heat flux equation (VS2DH). The 1DTempPro V2 model is available at https://code.usgs.gov/water/espd/hgb/1dtemppro. The 1DTempPro V2 model was run at 8 different sites within the study area at steady state using 1-week subsets of the data throughout the deployment period. All available depths were used from each temperature rod for the modeling of specific discharge. Note: a negative specific discharge indicates upward flow (groundwater discharge) into the lake. This data release contains the formatted sediment temperature time series data for each site (input.zip), the files needed to run the model (source.zip), and a summary of the specific discharge results at each site (output.zip). Additional details are provided in the readme.txt file.

This dataset includes all files used to model groundwater-surface water exchange in the nearshore of Lake Ozette, WA, located within Olympic National Park. Sediment temperature data was collected continuously from October 2018 to April 2019 at multiple depths using temperature rods that were installed in the lakebed in a portion of the nearshore on the eastern shoreline of Lake Ozette. Temperature data was collected at depths of 1, 4, 7, 11, and 50 cm, depending on the length of the temperature rod, using internally logging iButton temperature sensors (model DS1922L). 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 estimates of groundwater-surface water exchange were made. 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. Specific discharge across the sediment-water interface was estimated using the 1DTempPro V2 model; a USGS graphical user interface that solves a 1-dimensional heat flux equation (VS2DH). The 1DTempPro V2 model is available at https://code.usgs.gov/water/espd/hgb/1dtemppro. The 1DTempPro V2 model was run at 8 different sites within the study area at steady state using 1-week subsets of the data throughout the deployment period. All available depths were used from each temperature rod for the modeling of specific discharge. Note: a negative specific discharge indicates upward flow (groundwater discharge) into the lake. This data release contains the formatted sediment temperature time series data for each site (input.zip), the files needed to run the model (source.zip), and a summary of the specific discharge results at each site (output.zip). Additional details are provided in the readme.txt file.

This data release presents data that were collected as part of a larger effort to assess factors that regulate ecosystem metabolism in small ponds. This work was part of an international collaborative effort with the Global Lake Ecological Observatory Network (GLEON). From May to October 2019, dissolved oxygen, temperature, and light were measured throughout the water-depth profile of two natural wetlands and four artificial ponds located near Jamestown, North Dakota. Meteorological and bathymetric data also were collected. The natural wetlands are representative of semipermanent wetlands of the Prairie Pothole Region of North America. The artificial ponds, while smaller than the natural ponds, were managed to represent small inland wetlands of the Prairie Pothole Region. The Artificial ponds are managed by the U.S. Geological Survey Northern Prairie Wildlife Research Center. Data from this collaborative study will be used to understand how small inland ponds differ from large lakes and coastal systems, specifically with regard to nutrient recycling, primary production, greenhouse gas emissions, and oxygen dynamics.

This data release presents data that were collected as part of a larger effort to assess factors that regulate ecosystem metabolism in small ponds. This work was part of an international collaborative effort with the Global Lake Ecological Observatory Network (GLEON). From May to October 2019, dissolved oxygen, temperature, and light were measured throughout the water-depth profile of two natural wetlands and four artificial ponds located near Jamestown, North Dakota. Meteorological and bathymetric data also were collected. The natural wetlands are representative of semipermanent wetlands of the Prairie Pothole Region of North America. The artificial ponds, while smaller than the natural ponds, were managed to represent small inland wetlands of the Prairie Pothole Region. The Artificial ponds are managed by the U.S. Geological Survey Northern Prairie Wildlife Research Center. Data from this collaborative study will be used to understand how small inland ponds differ from large lakes and coastal systems, specifically with regard to nutrient recycling, primary production, greenhouse gas emissions, and oxygen dynamics.