This dataset provides shapefiles and tables of water flow data (acquired in the field August 2021) and inputs for calculating annual exceedance probability discharges along the Totatlanika River in central Alaska.

This dataset provides shapefiles and tabular data representing river channel geometries measured on photogrammetric imagery and extracted from a photogrammetric digital elevation model (acquired August 2021) along the Totatlanika River in central Alaska.

This data package includes four child items with data about sediment size and transport on the Totatlanika River, northern Alaska Range. Child Item 1: "Grain Size Data Collected Along the Totatlanika River, Alaska, August 2021". Scaled and geotagged digital photographs of river sediment and tabular sediment grain size data derived from the photographs. Child Item 2: "Boulder Size Data Collected Along the Totatlanika River, Alaska, August 2021". Shapefiles and tabular data representing boulders measured on photogrammetric imagery. Child Item 3: "Channel Geometry Data Collected Along the Totatlanika River, Alaska, August 2021". Shapefiles and tabular data representing river channel geometries measured on photogrammetric imagery and extracted from a photogrammetric digital elevation model. Child Item 4: "Water Discharge Data Collected and Modeled Along the Totatlanika River, Alaska, August 2021". Shapefiles and tables of water flow data (acquired in the field August 2021) and inputs for calculating annual exceedance probability discharges.

This dataset provides shapefiles and tabular data representing boulders measured on photogrammetric imagery (acquired August 2021) along the Totatlanika River in central Alaska.

This dataset provides shapefiles and tabular data representing boulders measured on photogrammetric imagery (acquired August 2021) along the Totatlanika River in central Alaska.

This dataset provides scaled and geotagged digital photographs of river sediment acquired in August 2021 at 21 sites along the Totatlanika River in central Alaska, and tabular sediment grain size data derived from the photographs.

This dataset provides scaled and geotagged digital photographs of river sediment acquired in August 2021 at 21 sites along the Totatlanika River in central Alaska, and tabular sediment grain size data derived from the photographs.

This dataset provides one orthorectified aerial photo mosaic and one digital elevation model derived from airborne fodar data acquired in 2021 on August 31 over the Totatlanika River in central Alaska. The term "fodar" is a portmanteau of foto and lidar, coined by Matt Nolan, which describes a method of quantifying the color and elevation of Earth's surface via airborne small-format digital camera photography.

This dataset provides one orthorectified aerial photo mosaic and one digital elevation model derived from airborne fodar data acquired in 2021 on August 31 over the Totatlanika River in central Alaska. The term "fodar" is a portmanteau of foto and lidar, coined by Matt Nolan, which describes a method of quantifying the color and elevation of Earth's surface via airborne small-format digital camera photography.

This dataset contains drainage basin boundaries for 253 U.S. Geological Survey (USGS) streamgages in Alaska that had at least 5 years of daily streamflow through September 30, 2017, three of which were delineated for alternate basin conditions. This compilation includes selected boundaries produced in 2014 (https://doi.org/10.5066/P143KNEJ). Additional basin boundaries were delineated from the streamgage location to the nearest USGS Watershed Boundary Dataset (WBD) HUC boundary and along HUC boundaries from that intersection to the basin headwaters. Streamgages selected for drainage basin delineation included streamgages in Alaska that met selection criteria for a statewide study of seasonal flow regimes (Curran and Biles, 2021). Sites for that study included USGS streamgages that had at least 5 years of daily streamflow that responded mostly to seasonal meteorological inputs, that had a definable drainage basin above a minimum size from which basin characteristics could be determined, and that provided streamflow data not similar to another streamgage record in the dataset. For three streamgages, the drainage basin boundary was delineated for the drainage area associated with regulated (diverted) or unregulated streamflow conditions contemporaneous with a period of streamflow record other than the present. Selected basins were previously published in the WBD as "NWISDrainageArea" features.