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Model Archive Summary for a Suspended-Sediment Concentration Surrogate Regression Model for Station 404038124131801; Hookton Slough near Loleta, CA Model archive summary (MAS) describing the development of a suspended-sediment concentration (SSC) surrogate regression model for the Hookton Slough near Loleta, CA water quality station (USGS site ID# 404038124131801). A continuous 15-minute SSC record was computed using this regression model for the period of record (03-04-2016 to 09-10-2019). The computed SSC record can be found on NWIS Web at https://waterdata.usgs.gov/ca/nwis/uv?site_no=404038124131801. The SSC record was used to assess ambient SSC conditions, the availability of suspended sediment to support surface deposition and elevation gain in adjacent salt marshes, and to characterize salt marsh resiliency to climate change impacts in Humboldt Bay, CA. Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: California, Hookton Slough, Humboldt Bay, U.S. Geological Survey, USGS, All tags... USGS Science Data Catalog (SDC), Water Quality, environment, estuarine processes, geomorphology, marsh ecosystem, sediment transport, water quality, water resources, Fewer tags Salt marsh monitoring during water years 2013 to 2019, Humboldt Bay, CA – water levels, surface deposition, elevation change, and carbon storage This data release includes monitoring data collected by the U.S. Geological Survey (USGS) Humboldt Bay Water Quality and Salt Marsh Monitoring Project. The datasets include continuous water levels collected at a 6-minute timestep collected in two study marshes (Mad River and Hookton). Surface deposition, elevation changes and carbon storage (in marsh edge environments) measured in five USGS study marshes (Mad River, Manila, Jacoby, White and Hookton). The monitoring data presented in this data release represent fundamental datasets needed to manage blue carbon stocks, assess marsh vulnerability, inform SLR adaptation planning, and build coastal resiliency to climate change in Humboldt Bay, CA Additional documentaton... Tags: California, Ecology, Hookton Slough, Hookton marsh, Humboldt Bay, All tags... Humboldt County, Jacoby marsh, Mad River Slough, Mad River marsh, Manila marsh, SET MH, Sedimentology, USGS Science Data Catalog (SDC), White Slough, White marsh, blue carbon, carbon storage, elevation change, estuarine processes, feldspar marker horizon, inundation, marsh accretion, marsh ecosystems, salt marsh, surface deposition, surface elevation table, Fewer tags Surface deposition and elevation change in five salt marshes, Humboldt Bay, CA, 2014-2019 Elevation change and surface deposition are important drivers of salt marsh ecological processes and represent two of the fundamental variables for determining marsh resilience to sea-level rise. Surface Elevation Tables with Marker Horizons (SET-MH) were used to measure plot-scale elevation change (SETs) and surface deposition (MHs) in five USGS study marshes located in Humboldt Bay, CA. SET-MHs were installed in 2014 (Mad River marsh and Manila marsh) and in 2015 (Jacoby marsh, White marsh, and Hookton marsh) and were measured during quarterly site visits. The SET-MH network includes two SETs and six MHs in each of the five study marshes. Measuring elevation change at the two SETs in each study marsh involves... Categories: Data; Tags: California, Hookton marsh, Humboldt Bay, Humboldt County, Jacoby marsh, All tags... Mad River marsh, Manila marsh, SET MH, White marsh, accretion, biota, estuarine processes, marsh ecosystems, salt marsh, surface deposition, Fewer tags Water level and barometric pressure measurements in two salt marshes, Humboldt Bay, CA, 2016-2019 Water levels are an important driver of salt marsh processes. In 2016, pressure-transducing data loggers (LT Edge Model 3001, Solinst and Hobo Model U-20-001-01-Ti) and barometric-pressure loggers (Model 3001, Solinst) were deployed in two USGS study marshes (Mad River marsh and Hookton marsh) located in Humboldt Bay, CA. The loggers were placed as low in the tide frame as possible, while still maintaining access to the sensors at low tide. Sensors captured high tide water levels; but sensor elevation was too high to capture low tide water levels. Continuous measurements were collected on a 6-minute timestep. Sensor elevations were surveyed using Real-Time Kinematic GPS (Leica GS-15, Leica Geosystems, Norcross,... Categories: Data; Tags: California, Hookton marsh, Humboldt Bay, Humboldt County, Mad River marsh, All tags... Manila marsh, White marsh, biota, estuarine processes, inundation, marsh ecosystems, salt marsh, water level, Fewer tags Model Archive Summary for a Suspended-Sediment Concentration Surrogate Regression Model for Station 405219124085601; Mad River Slough near Arcata, CA Model archive summary (MAS) describing the development of a suspended-sediment concentration (SSC) surrogate regression model for the Mad River Slough near Arcata, CA water quality station (USGS site ID# 405219124085601). A 15-minute SSC record was computed using this regression model for the period of record (03-04-2016 to 09-10-2019). The computed SSC record can be found on NWIS Web at https://waterdata.usgs.gov/nwis/inventory/?site_no=405219124085601&agency_cd=USGS. The SSC record was used to assess ambient SSC conditions, the availability of suspended sediment to support surface deposition and elevation gain in adjacent salt marshes, and to characterize salt marsh resiliency to climate change impacts in Humboldt... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: California, Humboldt Bay, Mad River Slough, U.S. Geological Survey, USGS, All tags... USGS Science Data Catalog (SDC), Water Quality, environment, estuarine processes, geomorphology, marsh ecosystems, sediment transport, water quality, water resources, Fewer tags Carbon storage in the edge environments of five salt marshes, Humboldt Bay, CA, 2018 Blue carbon storage in coastal vegetated habitats is an important component of the global carbon cycle. In 2018, shallow sediment cores were collected in five USGS study marshes located in Humboldt Bay, CA. The cores were collected within 2 m of the marsh edge to characterize carbon storage in areas susceptible to marsh edge erosion Two sediment cores were collected in each of the five study marshes (Mad River, Manila, Jacoby, White, Hookton) using an Ejkelkamp peat sampler (52 mm diameter). The sampler was pounded in the sediments with a heavy plastic mallet. This method produces little to no compaction because once inserted, the corer is rotated 180°, and a sample is collected adjacent to where it was driven into... Categories: Data; Tags: California, Hookton marsh, Humboldt Bay, Humboldt County, Jacoby marsh, All tags... Mad River marsh, Manila marsh, White marsh, biota, blue carbon, bulk density, carbon storage, estuarine processes, marsh ecosystems, salt marsh, Fewer tags