Data

This data release consists of flood hazard maps from compound coastal hazards--specifically sea-level rise (SLR) and projected coastal storms. Products include projected flood depths, flood extents including uncertainties, water elevations, wave heights, velocity hazard, and erosion and sedimentation pattern. These are generated using a suite of numerical models driven by outputs from...

Images of the seafloor off the Kona coast of the Island of Hawai`i were collected by the United States Geological Survey in 2003, 2004, and 2022, during field activities A803HW, A204HW, A604HW, and 2022-615-FA. The images were acquired in cooperation with the National Park Service, primarily in the waters off Kaloko-Honokohau National Historical Park, Pu`ukohola Heiau National Historic...

This data release consists of flood hazard maps from compound coastal hazards--specifically sea-level rise (SLR) and projected coastal storms. Products include projected flood depths, flood extents including uncertainties, water elevations, wave heights, velocity hazards, and erosion and sedimentation patterns. These are generated using a suite of numerical models driven by outputs from...

The Pacific Northwest is home to numerous faults that cut through the surrounding crust including the Seattle fault. Over time, frictional stresses accumulate along these faults, building slowly until they exceed the fault's strength, resulting in an earthquake. Evidence of these earthquakes may be found in Pacific Northwest lakes. Past underwater landslides caused by the earthquakes...

This data release consists of flood hazard maps from compound coastal hazards--specifically sea-level rise (SLR) and projected coastal storms. Products include projected flood depths, flood extents including uncertainties, water elevations, wave heights, velocity hazards, and erosion and sedimentation patterns. These are generated using a suite of numerical models driven by outputs from...

Shoreline position data from the CoastSat methodology were used to describe beach changes along the California coast during 1984-2024. This data release includes the results of the time-series analyses, including mean annual deseasonalized shoreline positions for 329 beach segments and total uncertainty in these measurements. These techniques were applied to 329 beach segments, which...

This data release contains 57 high-resolution chirp sub-bottom profiles collected in the southern Great Salt Lake, Utah, by the U.S. Geological Survey in June 2021 during field activity 2021-615-FA. The dataset was acquired to image subsurface sedimentary structures and stratigraphy in support of efforts to characterize past earthquake events along the Great Salt Lake Fault, contributing...

This data release presents structure-from-motion (SfM) products derived from aerial imagery collected along the California coast as part of an ongoing effort by the USGS Coastal and Marine Hazards and Resources Program (CMHRP) Remote Sensing Coastal Change (RSCC) project. The products presented herein are point cloud and change detection products for 33 flights between January 2017 to...

This data release supersedes version 2.0, published in September 2023 at https://doi.org/10.5066/P9MAJHNI. Versioning details are documented in the accompanying Klamath_estuary_sediment_grain_size_VersionHistory.txt. This data release includes grain-size measurements on sediment samples collected from the substrate surface and uppermost 10 cm of sediment deposits in the Klamath River...

The U.S. Geological Survey Pacific Coastal and Marine Science Center collected oceanographic and hydrographic monitoring data for a pilot project to place dredged sediment in bay shallows to nourish marshes conducted by the US Army Corps of Engineers, San Francisco District. Dredged material was placed in the shallows of South San Francisco Bay during December 2023. Monitoring spanned...

This data release provides tidally corrected shoreline positions for five groin field sites of around the United States (Ventura, CA, Newport Beach, CA , Santa Monica, CA, Long Branch, NJ, Sandwich, MA). Both CSV files of tidally corrected shorelines and GeoJSON files of the region of interests (ROIs), transects, and reference shorelines are provided within respective zip files. Both...

Along-shore surface-based 2D electrical resistivity tomography (ERT) surveys were collected in the nearshore region of Ofu, American Samoa.