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This data set includes: 1) A shapefile of the Humboldt Bay Eel River (HBER) 13 sub watersheds, 2) A shape file of the streamflow gages used in calibration, and 3) Daily Basin Characterization Model (BCM) model climate inputs (minimum and maximum air temperature, precipitation, and potential evapotranspiration) and outputs of recharge and runoff for the year 2010 used to develop streamflow estimates at 12 gage locations.
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We performed bathymetric surveys using a shallow-water echo-sounding system (Takekawa et al., 2010, Brand et al., 2012) comprised of an acoustic profiler (Navisound 210; Reson, Inc., Slangerup, Denmark), Leica RTK GPS Viva rover, and laptop computer mounted on a shallow-draft, portable flat-bottom boat (Bass Hunter, Cabelas, Sidney, NE; Figure 7). The RTK GPS obtained high resolution elevations of the water surface (reported precision 10 cm water depth. We recorded twenty depth readings and one GPS location each second along transects spaced 100 m apart perpendicular to the nearby salt marsh. We calibrated the system before use with a bar-check plate and adjusted the sound velocity for salinity and temperature differences....
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contains an excel format and shapefile format of the vegetation survey data collected within Humboldt Bay during the summer of 2012.We recorded vegetation data within a 0.25 m2 quadrat concurrently with elevation surveys. Data were taken at every fourth (25%) elevation point (n=740 quadrats; Fig. 4). We measured height (mean and maximum, measured within 0.05 m) and visually estimated percent cover for each species within each quadrat. This allowed us to develop a relationship between plant species, elevation and tidal datum across all sites. We also characterized the most common species, which were defined as those found at>10 % of the plots. Plant species frequency was plotted relative to MHW. This comprehensive...
This project applied sea-level rise (SLR) modeling approaches along the Pacific coast tidal gradient at a parcel scale through improved data collection tools and collaboration relevant to land managers. At selected salt marsh parcels in both the North Pacific and California LCCs, data collection techniques were employed to assess detailed baseline habitat elevations; tidal ranges, microclimate, and extreme weather events; sediment supply sources; vegetation community composition; and vertebrate population indices. The design provides resource managers with information on the value of different datasets and methods including their uncertainty, as well as determines their usefulness in climate change adaptation planning...
Categories: Data, Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2011, Academics & scientific researchers, Alaska, British Columbia, CA-2, All tags...
The Humboldt Bay-Eel River region may experience the highest rate of relative sea level rise increase along the West Coast. The Project will engage stakeholders to discuss community and science needs for planning and implementing adaptation measures to sea level rise. The Project is a critical step in developing an ecosystem based-management (EBM) approach to guide the protection, management, enhancement, adaptation, restoration, and possible redistribution of Humboldt Bay-Eel River Delta habitats under future climate scenarios. This process will be informed by the best-available science, the needs of Humboldt Bay-Eel River Delta agricultural producers, and other community members.
Categories: Data, Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2015, Academics & scientific researchers, Academics & scientific researchers, CA-02, CA-2, All tags...
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To assess the current topography of the tidal marshes we conducted survey-grade elevation surveys at all sites between 2009 and 2013 using a Leica RX1200 Real Time Kinematic (RTK)Global Positioning System (GPS) rover (±1 cm horizontal, ±2 cm vertical accuracy; Leica Geosystems Inc., Norcross, GA; Figure 4). At sites with RTK network coverage (San Pablo, Petaluma, Pt. Mugu, and Newport), rover positions were received in real time from the Leica Smartnet system via a CDMA modem (www.lecia-geosystems.com). At sites without network coverage (Humboldt, Bolinas, Morro and Tijuana), rover positions were received in real time from a Leica GS10 antenna base station via radio link. When using the base station, we adjusted...
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The overarching goal of this research was to use site-specific data to develop local and regionally-applicable climate change models that inform management of tidal wetlands along the Pacific Northwest coast. The overarching questions were: (1) how do tidal marsh site characteristics vary across estuaries, and (2) does tidal marsh susceptibility to sea-level rise (SLR) vary along a latitudinal gradient and between estuaries? These questions are addressed in this data collection with three specific objectives: (1) measure topographical and ecological characteristics (e.g., elevation, tidal range, vegetation composition) for tidal marsh and intertidal mudflats, (2) model SLR vulnerability of these habitats, and (3)...
Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2012, Bolinas Lagoon, CA, CASC, California, All tags...
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In California, the near-shore area where the ocean meets the land is a highly productive yet sensitive region that supports a wealth of wildlife, including several native bird species. These saltmarshes, mudflats, and shallow bays are not only critical for wildlife, but they also provide economic and recreational benefits to local communities. Today, sea-level rise, more frequent and stronger storms, saltwater intrusion, and warming water temperatures are among the threats that are altering these important habitats. To support future planning and conservation of California’s near-shore habitats, researchers examined current weather patterns, elevations, tides, and sediments at these sites to see how they affect...
Categories: Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2012, Bolinas Lagoon, CA, CASC, California, All tags...
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Our study focused on seven marsh sites distributed throughout Humboldt Bay and largely withinrefuge boundaries; Hookton Slough Island, Salmon Creek marsh, White Slough marsh, EurekaSlough marsh, Jacoby Creek marsh, Mad River Slough marsh, and Manila marsh. These marshesprovide important habitat for marsh-dependent species, such as Humboldt Bay Owl’s Clover(Castilleja ambigua), Western Snowy Plover (Charadrius alexandrinus nivosus), and Steelhead(Oncorhynchus mykiss).
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Coastal resource managers are faced with many challenges and uncertainties in planning adaptive strategies for conserving estuarine habitats with climate change. To plan and manage for future scenarios, managers need access to data, models, and training on the best-available science. To address this need, the USGS Western Ecological Research Center has worked with federal, Tribal, state, and local partners to establish a network of study sites in 17 estuaries along the Pacific Coast, examining the climate change effects on tidal wetlands with high-quality local data, downscaled models, and projected storm effects. Study sites include ten USFWS National Wildlife Refuges and four NOAA National Estuarine Research Reserves.


    map background search result map search result map Effects of Sea-Level Rise and Extreme Storms on California Coastal Habitats: Part 1 Humboldt Bay NWR Sea-level rise modeling Assessing Marsh response from sea-level rise applying local site conditions:Humboldt Bay National Wildlife Refuge - Final Report Coastal Ecosystem Response to Climate Change - Fact sheet Humboldt Marsh Vegetation Developing Shared Strategies for Sea-level Rise Adaptation in Working Lands of Humboldt Bay and the Eel River Delta Humboldt, California: Tidal Marsh Digital Elevation Model Humboldt, California: Tidal Marsh Bathymetry Digital Elevation Model Sea-level rise projections for and observational data of tidal marshes along the California coast Daily Basin Characterization Model (BCM) archive for Humboldt Bay/Eel River Humboldt Marsh Vegetation Humboldt Bay NWR Sea-level rise modeling Assessing Marsh response from sea-level rise applying local site conditions:Humboldt Bay National Wildlife Refuge - Final Report Coastal Ecosystem Response to Climate Change - Fact sheet Developing Shared Strategies for Sea-level Rise Adaptation in Working Lands of Humboldt Bay and the Eel River Delta Daily Basin Characterization Model (BCM) archive for Humboldt Bay/Eel River Sea-level rise projections for and observational data of tidal marshes along the California coast Effects of Sea-Level Rise and Extreme Storms on California Coastal Habitats: Part 1