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River-channel topography, grain size, and turbidity records from the Carmel River, California, before, during, and after removal of San Clemente Dam (ver. 2.0, March 2022) This data release supersedes version 1, published in 2017 under https://doi.org/10.5066/F74M93HF. Please see Version_History_P9HG8UDS.txt below for more information. The San Clemente Dam, built in the 1920s on the Carmel River in Monterey County, California, was removed during 2014 and 2015. The dam-removal project was the largest in California to date, and one of the largest in the U.S. This USGS data release presents data collected before, during, and after the removal of the dam. The data were collected to study how the river channel's topographic profiles and sediment distributions changed in response to new sediment supply after dam removal and base-level changes in the former San Clemente reservoir sediment... Categories: Data; Tags: Geomorphology, Land Use Change, Water Resources Aerial imagery and structure-from-motion data products from a UAS survey of the Los Padres Reservoir delta, Carmel River valley, CA, 2017-11-01 An unoccupied aerial system (UAS) was used to acquire high-resolution imagery of the exposed reservoir delta at Los Padres Reservoir, in the Carmel River valley in central California on 1 November 2017. This survey followed sediment delivery to the reservoir by the Carmel River due to landscape response after the 2016 Soberanes Fire and high flows in winter 2017. The imagery from this survey was processed using structure-from-motion (SfM) photogrammetric techniques to derive a high-resolution digital surface model (DSM), a digital elevation model (DEM), an orthomosaic image, and a topographic point cloud. A total of six flights were conducted for the survey between 19:35 and 22:15 UTC (12:35 and 15:15 PDT). Only... Categories: Data; Tags: Geomorphology, Remote Sensing Rain measurements in and near the Dolan Fire Area, Los Padres National Forest, California, 2022 to 2023 Rainfall measurements were collected in and near the Dolan Fire burn area, Los Padres National Forest, California. The CZU Fire ignited in Los Padres National Forest, California, on August 18, 2020. By the time of full containment on December 31, 2020, the fire had burned 518 km2 (128,050 acres) in Monterey County. The U.S. Geological Survey (USGS) installed seven rain gages in and near the Dolan Fire burn area in October 2021 to measure rainfall during two post-fire wet seasons. This data release contains rain records from the Mill Creek and upper Nacimiento River watersheds collected during water year 2023 (October 1, 2022, through spring 2023). Previous datasets from this region included an additional rain gage... Categories: Data; Tags: CMHRP, Climatology, Coastal and Marine Hazards and Resources Program, Monterey County, PCMSC, All tags... Pacific Coastal and Marine Science Center, State of California, U.S. Geological Survey, USGS, Water Quality, Water Resources, climatologyMeteorologyAtmosphere, environment, fire damage, precipitation (atmospheric), precipitation measurements, Fewer tags Sediment grain-size data from the Klamath estuary, California This data release supersedes version 1.0, published in November 2021 at https://doi.org/10.5066/P9CAZIHJ. Versioning details are documented in the accompanying Klamath_Grainsize_VersionHistory.txt file. This data release includes grain-size measurements of sediment samples collected from the substrate surface and uppermost 10 cm of sediment deposits in the Klamath estuary, northern California. Samples were collected using a BMH-60 bed-material sampler deployed from a boat, or by hand trowel from subaerial or shallow-water (less than 0.5 m water depth) regions along the estuary margins and side channels. Sediment grain size was analyzed at the U.S. Geological Survey (USGS) laboratory in Santa Cruz, Calif. Particles... Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Del Norte County, Distributions, Geomorphology, All tags... Klamath basin, PCMSC, Pacific Coastal and Marine Science Center, Sedimentology, State of California, U.S. Geological Survey, USGS, environment, estuary, field sampling, geoscientificInformation, grain size, grain-size analysis, land surface characteristics, sediment, sediment grain size, Fewer tags Luminescence, weather, and grain-size data from eastern Chuckwalla Valley, Riverside County, California This data release contains luminescence, weather, and sediment grain-size data from eastern Chuckwalla Valley, Riverside County, California. This study investigates sedimentary and geomorphic processes in eastern Chuckwalla Valley, Riverside County, California, a region of arid, basin-and-range terrain where extensive solar-energy development is planned. The objectives were to (1) measure local weather parameters and use them to model aeolian sediment transport potential; (2) identify surface sedimentary characteristics in representative localities; and (3) evaluate longer-term landscape evolution rates and processes by analyzing stratigraphy in combination with luminescence geochronology. These data accompany East... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: California, Chuckwalla Valley, Geomorphology, Riverside County, USA, All tags... USGS Science Data Catalog (SDC), luminescence, sediment grain size, weather data, Fewer tags Grain size and charcoal abundance in sediment samples from Los Padres reservoir, Carmel River watershed, California Sediment samples were collected from Los Padres reservoir in the Carmel River watershed, central California coast, between July 11 and 17, 2017, using a CME-45 barge-mounted drill rig, to characterize sedimentary properties in the reservoir deposits following the Soberanes Fire of 2016 and high river flows in winter 2017. Borehole samples were recovered using direct push coring with an Osterberg piston sampler operated by Taber Drilling Company of Sacramento, California, and overseen by AECOM, Inc. Sediment was recovered using a split-barrel sampler and a rotary drill bit was added to the sampler where needed to penetrate coarse sediment. Samples from four boreholes are described in this data release: three sampled... Categories: Data; Tags: CMHRP, Carmel River, Coastal and Marine Hazards and Resources Program, Data Content Subjects, Geomorphology, All tags... Nonliving Resources, PCMSC, Pacific Coastal and Marine Science Center, Sedimentology, U.S. Geological Survey, USGS, coastal change hazards topics, datasets, earth sciences, environment, field inventory and monitoring, geoscientificInformation, grain-size analysis, inlandWaters, Fewer tags Grain-size data for sediment samples collected in Whiskeytown Lake, northern California, in 2018 and 2019 This data release supersedes version 1.0, published in July 2021 at https://doi.org/10.5066/P9BHOPEP. Versioning details are documented in the accompanying Whiskeytown_VersionHistory.txt file The Carr Fire ignited in northern California in July 2018, and ultimately burned almost 300,000 acres (approximately half on federal lands), resulting in a federal major-disaster declaration (DR-4382). Approximately 93% of the area within Whiskeytown National Recreation Area was burned extensively during the Carr Fire, including all of the landscape surrounding and draining into Whiskeytown Lake. Whiskeytown Lake, a federally managed reservoir, subsequently acted as a sediment trap for material eroded from hillslopes and streambeds... Categories: Data; Tags: Assessments, CMHRP, Coastal and Marine Hazards and Resources Program, Material Resources, PCMSC, All tags... Pacific Coastal and Marine Science Center, Sedimentology, State of California, U.S. Geological Survey, USGS, Water Resources, Whiskeytown National Recreation Area, geoscientificInformation, grain size, land surface characteristics, reservoir sedimentation, sediment, sediment grain size, Fewer tags Rain measurements in the Dolan Fire Area, Los Padres National Forest, California, 2021 to 2022 Rainfall measurements were collected in and near the Dolan Fire burn area, Los Padres National Forest, California. The Dolan Fire ignited on August 18, 2020. By the time of full containment on December 31, 2020, the fire had burned 518 km2 (128,050 acres) in Monterey County. Post-fire debris flows occurred in many watersheds burned by the Dolan Fire during the first post-fire wet season, in winter 2021. The U.S. Geological Survey (USGS) installed seven rain gages within the Dolan Fire burn area in October 2021 to measure rainfall during the second post-fire wet season. The USGS gratefully acknowledges permission granted by Los Padres National Forest for the collection of these data. Categories: Data; Tags: CMHRP, Climatology, Coastal and Marine Hazards and Resources Program, Hydrology, PCMSC, All tags... Pacific Coastal and Marine Science Center, Santa Cruz County, State of California, U.S. Geological Survey, USGS, climatologyMeteorologyAtmosphere, environment, fire damage, precipitation (atmospheric), precipitation measurements, Fewer tags Lead, Radium, Cesium, and Thorium isotope activity in sediment samples from Los Padres reservoir, Carmel River watershed, California Sediment samples were collected from Los Padres reservoir in the Carmel River watershed, central California coast, between July 11 and 17, 2017, using a CME-45 barge-mounted drill rig, to characterize sedimentary properties in the reservoir deposits following the Soberanes Fire of 2016 and high river flows in winter 2017. Borehole samples were recovered using direct push coring with an Osterberg piston sampler operated by Taber Drilling Company of Sacramento, California, and overseen by AECOM, Inc. Sediment was recovered using a split-barrel sampler and a rotary drill bit was added to the sampler where needed to penetrate coarse sediment. Samples from three boreholes are described in this data release: two sampled... Categories: Data; Tags: CMHRP, Carmel River, Coastal and Marine Hazards and Resources Program, Data Content Subjects, Geochemistry, All tags... Nonliving Resources, PCMSC, Pacific Coastal and Marine Science Center, Sciences, Sedimentology, U.S. Geological Survey, USGS, coastal change hazards topics, environment, geoscientificInformation, inlandWaters, Fewer tags Topographic survey data and digital elevation model of Oxbow Reservoir, Placer County, California, October 2022 This data release presents topographic survey data and a digital elevation model (DEM) of Oxbow Reservoir, in Placer County, California. The U.S. Geological Survey (USGS) conducted a topographic survey of accessible regions of the reservoir sediment on 26 October 2022, when the reservoir was partially de-watered to allow repairs to the dam infrastructure following the Mosquito Fire. The survey was conducted to document baseline reservoir sediment elevation in Oxbow Reservoir immediately after the Mosquito Fire, prior to the first post-fire runoff of the 2022-2023 winter. During the survey, significant portions of the reservoir site remained inaccessible to surveyors due to the continued flow of the Middle Fork American... Categories: Data; Tags: Alabama Bar, Bathymetry and Elevation, CHMRP, Coastal and Marine Hazards and Resources Program, Geomorphology, All tags... Middle Fork American River, Oxbow Bar, Oxbow Reservoir, PCMSC, Pacific Coastal and Marine Science Center, Placer County, Rubicon River, State of California, U.S. Geological Survey, USGS, elevation, geomorphology, geoscientificInformation, geospatial datasets, topographic mapping, topographic maps, topography, Fewer tags Chirp sub-bottom data collected in 2019 in Whiskeytown Lake, California during USGS field activity 2018-686-FA High-resolution chirp sub-bottom data were collected by the U.S. Geological Survey, Pacific Coastal and Marine Science Center in May of 2019 in Whiskeytown Lake, California using an Edgetech SB-512i sub-bottom profiler. These data were collected to measure possible debris flows into the lake during the 2018-2019 rainy season following the July-August 2018 Carr fire that burned vegetation around the entire lake. Post-fire hillslope sediment yields are commonly substantially greater than pre-fire yields, but the degree to which they increase can vary substantially. Effects of wildfire on sediment yield have important implications for hazards (debris-flow risk), ecosystem disturbance and recovery, and downstream water... Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Distributions, Geomorphology, Geophysics, All tags... Marine Geology, PCMSC, Pacific Coastal and Marine Science Center, State of California, Substrate, U.S. Geological Survey, USGS, Water Resources, Whiskeytown Lake, acoustic methods, geophysics, geoscientificinformation, geospatial datasets, lakebed, lakes, mapping, marine geophysics, seismic reflection profiling, sub-bottom profiling, Fewer tags Field, geotechnical, and meteorological data of the 22 March 2018 narrow cold frontal rainband (NCFR) and its effects, Tuolumne River canyon, Sierra Nevada Foothills, California This data release includes information used to support the manuscript "Linking mesoscale meteorology with extreme landscape response: effects of narrow cold frontal rainbands (NCFR)". The included datasets and supplement include information related to the 22 March 2018 NCFR and associated shallow landslides in the Toulumne Canyon triggered by this event. The three datasets and one supplemental information document are: 1) mapped landslides where we created polygons for each landslide that occurred (Tuolumne Canyon Landslide Data Storm of 22 March 2018.kmz), 2) soil grain size data for landslide source and depositional zones (Tuolumne Canyon Grain Size Data Storm of 22 March 2018.xlsx), 3) a time series of rainfall... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: California, GMEG, Geology, Minerals, Energy and Geophysics Science Center, Geomorphology, Groveland, All tags... LHP, Landslide Hazards Program, Sierra Nevada, Tuolumne River, USGS, USGS Science Data Catalog (SDC), United States, earth science, geomorphology, landslide, meteorology, Fewer tags Polycyclic aromatic hydrocarbons (PAHs) and suspended sediment concentrations in the San Lorenzo River, Santa Cruz, California, USA Water from the San Lorenzo River in Santa Cruz, California, was sampled to analyze for polycyclic aromatic hydrocarbons (PAHs) and suspended sediment concentrations (SSC) during the rainy seasons from 2008 to 2019 following drought conditions. The samples were collected using a US D-95 depth-integrated water sampler deployed from a bridge-box platform beneath a pedestrian bridge For each suspended-sediment sample, the water was collected in a 1-liter Nalgene bottle attached to the sampling device. After 14 days of settling time, excess water and organic matter were removed from the bottle using wet suction from a vacuum pump, and the sand fraction was then separated from silt and clay by filtration through a 0.063... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geochemistry, Hydrology, Water Quality Rain measurements in and near the CZU Lightning Complex Fire area, Santa Cruz Mountains, California, 2021 to 2022 Rainfall measurements were collected in and near the CZU Lightning Complex Fire (hereafter, "CZU Fire") burn area, Santa Cruz Mountains, California. The CZU Fire ignited in the Santa Cruz Mountains, California, on August 16, 2020. By the time of full containment on September 22, 2020, the fire had burned 350 km2 (86,510 acres) in Santa Cruz and San Mateo Counties. The U.S. Geological Survey (USGS) installed four rain gages in and near the CZU Fire burn area to measure rainfall during two post-fire wet seasons. The USGS gratefully acknowledges the cooperation of Big Basin Redwoods State Park, the Big Creek Lumber Co., the McCrary family, and Brookdale Lodge in the collection of these data. This data release contains... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: CMHRP, Climatology, Coastal and Marine Hazards and Resources Program, Geomorphology, Hydrology, All tags... PCMSC, Pacific Coastal and Marine Science Center, Santa Cruz County, State of California, U.S. Geological Survey, USGS, climatologyMeteorologyAtmosphere, environment, fire damage, precipitation (atmospheric), precipitation measurements, Fewer tags River-channel topography and sediment grain size on the Elwha River, Washington, 2006 to 2017 The Elwha River, Washington, USA, was the site of the largest dam-removal project to date, in which two dams were removed between 2011 and 2014. Dam removal was made in stages over about a one-year period for the Elwha Dam (32 m high) and a three-year period for the Glines Canyon Dam (64 m high). This data release presents topographic and sediment grain size data collected by the U.S. Geological Survey (USGS) in the Elwha River channel between 2006 and 2017. These data have been used to inform interpretations of geomorphic and sediment evolution in the Elwha River before, during, and after dam removal, including the response to several flood events (Draut and others, 2011; East and others, 2015; Warrick and others,... Tags: Geomorphology, Land Use Change, Water Quality, Water Resources Grain-size data for sediment samples collected in Whiskeytown Lake, northern California, in 2018 and 2019 Note: this data release has been depecrated. Find the updated version here: https://doi.org/10.5066/P9TUTK7J The Carr Fire ignited in northern California in July 2018, and ultimately burned almost 300,000 acres (approximately half on federal lands), resulting in a federal major-disaster declaration (DR-4382). Approximately 93% of the area within Whiskeytown National Recreation Area was burned extensively during the Carr Fire, including all of the landscape surrounding and draining into Whiskeytown Lake. Whiskeytown Lake, a federally managed reservoir, subsequently acted as a sediment trap for material eroded from hillslopes and streambeds in the aftermath of the Carr Fire. The U.S. Geological Survey measured topographic... Categories: Data; Tags: Assessments, CMHRP, Coastal and Marine Hazards and Resources Program, Material Resources, PCMSC, All tags... Pacific Coastal and Marine Science Center, Sedimentology, State of California, U.S. Geological Survey, USGS, Whiskeytown National Recreation Area, geoscientificInformation, grain size, land surface characteristics, reservoir sedimentation, sediment, sediment grain size, Fewer tags River Valley Sediment Connectivity Data, Colorado River, Grand Canyon This workbook contains spatial data on the hydrology, sedimentology, and vegetation extent within the Colorado River corridor from 60 to 78 miles (97 to 125 kilometers) downstream from Glen Canyon Dam, Arizona. In combination with the accompanying MATLAB scripts, these data were used to generate the results within the accompanying manuscript (Kasprak et al., Quantifying and Forecasting Changes in the Areal Extent of River Valley Sediment in Response to Altered Hydrology and Land Cover). Specifically, the datasets include (a) the daily mean or estimated/measured maximum discharge for the Colorado River at Lees Ferry (USGS #09380000) from 1921 to 2016, (b) the estimated daily maximum discharge for the future period... Tags: Arizona, Colorado River, Ecology, Geography, Geomorphology, All tags... Glen Canyon Dam, Grand Canyon, Information Sciences, USGS Science Data Catalog (SDC), aeolian processes, biota, fluvial geomorphology, fluvial processes, geomorphology, geoscientificInformation, human impacts, hydrology, sediment connectivity, sediment transport, vegetation, Fewer tags Radiocarbon age dating of biological material from cores collected off British Columbia, Canada and southeastern Alaska, U.S. along the Queen Charlotte-Fairweather fault zone Results of radiocarbon age dating of planktic foraminifera, benthic foraminifera, and pelecypod shell fragments collected from piston cores, trigger weight cores, and IKU grab samples obtained in 2015 and 2017 offshore British Columbia, Canada and southeastern Alaska, U.S. along the Queen Charlotte-Fairweather fault zone. Categories: Data; Tags: British Columbia, CMHRP, Canada, Coastal and Marine Hazards and Resources Program, Dixon Entrance, All tags... Habitat, Marine Geology, PCMSC, Pacific Coastal and Marine Science Center, Pacific Ocean, State of Alaska, Stratigraphy, U.S. Geological Survey, USGS, animals, benthic foraminifera, carbon-14 analysis, chemical analysis, chemical oceanography, environment, foraminifera, fragile ecosystems, geochemistry, geoscientificInformation, invertebrates, marine chemistry, mollusks, oceans, organisms, planktic foraminifera, protists, radiometric dating, Fewer tags Sediment grain-size data from the Klamath estuary, California Note: this data release has been depecrated. Find the updated version here: https://doi.org/10.5066/P9MAJHNI This data release includes grain-size measurements of sediment samples collected from the substrate surface and uppermost 10 cm of sediment deposits in the Klamath estuary, northern California. Samples were collected using a BMH-60 bed-material sampler deployed from a boat, or by hand trowel from subaerial or shallow-water (less than 0.5 m water depth) regions along the estuary margins and side channels. Sediment grain size was analyzed at the U.S. Geological Survey (USGS) laboratory in Santa Cruz, Calif. Particles coarser than 2 mm were sieved using a RO-TAP sieve shaker, and particles finer than 2 mm were... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Del Norte County, Distributions, Klamath basin, All tags... PCMSC, Pacific Coastal and Marine Science Center, Sedimentology, State of California, U.S. Geological Survey, USGS, environment, estuary, field sampling, geoscientificInformation, grain size, grain-size analysis, land surface characteristics, sediment, sediment grain size, Fewer tags Aeolian and drainage classification data for various archaeological sites in Grand Canyon National Park along the Colorado River from 1973 to 2022 These data were compiled to assess the risk of erosion to archaeological site preservation. The objective of the study is to evaluate changes in archaeological site condition over time as a function of two geomorphology based conceptual models that evaluate the extent to which sites are potentially affected by 1) erosion from gullies, and 2) wind-driven (aeolian) supply of river-sourced sand, respectively. These data represent the results of two classification metrics, based on the two conceptual models, applied to a population of 362 archaeological sites over multiple decades. Both conceptual models numerically rank geomorphic conditions with class values of 1 representing the best potential for archaeological... Categories: Data; Tags: Arizona, Colorado River, Geography, Geomorphology, Glen Canyon Dam, All tags... Grand Canyon National Park, Hydrology, Information Sciences, Remote Sensing, Soil Sciences, USGS Science Data Catalog (SDC), aeolian, aerial photography, archaeological landscapes, archaeological site preservation, archaeological sites, archaeology, baseline data, classification metrics, climatologyMeteorologyAtmosphere, conceptual models, data release, ecological processes, environment, erosion, field inventory and monitoring, geomorphic conditions, geomorphology, geoscientificInformation, gully, inlandWaters, modeling, multidecadal, natural processes, policies and regulations, precipitation (atmospheric), rainfall runoff, regulated flows, risk, river regulation, river-sourced sand, runoff, temporal resolution, terminologies and classifications, Fewer tags 1 2 »