Cogswell Marsh
Science Center Objects
Cogswell marsh is located on the eastern side of south San Francisco Bay and covers 60 hectares. We surveyed 523 elevation points and 228 vegetation plots to determine baseline conditions of the marsh. Water level loggers deployed in 2010 were used to characterize the tidal inundation patterns throughout the year. Sediment accretion rates from soil cores near Laumeister marsh were extrapolated to Cogswell marsh and used as input for the WARMER sea-level rise response model. WARMER projects that by 2060 Cogswell marsh will be dominated by mid marsh vegetation and will transition into low marsh habitat by 2090.
Cogswell marsh is located on the eastern side of south San Francisco Bay and covers 60 hectares. We surveyed 523 elevation points and 228 vegetation plots to determine baseline conditions of the marsh. Water level loggers deployed in 2010 were used to characterize the tidal inundation patterns throughout the year. Sediment accretion rates from soil cores near Laumeister marsh were extrapolated to Cogswell marsh and used as input for the WARMER sea-level rise response model. WARMER projects that by 2060 Cogswell marsh will be dominated by mid marsh vegetation and will transition into low marsh habitat by 2090.
COGSWELL MARSH
To download the Cogswell PDF Summary Report (Cogswell appendix from USGS Open-File Report Final report for sea-level rise response modeling for San Francisco Bay estuary tidal marshes):
Cogswell Summary Report
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Date published: May 28, 2013Map of elevation sampling point locations at Cogswell Marsh
Map of elevation sampling point locations at Cogswell Marsh. To learn more about this project, visit Modeling Sea-Level Rise in San Francisco Bay Estuary.
Attribution: Western Ecological Research Center -
Date published: May 28, 2013Map of the derived elevation data at Cogswell Marsh
Map of the derived elevation data at Cogswell Marsh. To learn more about this project, visit Modeling Sea-Level Rise in San Francisco Bay Estuary.
Attribution: Western Ecological Research Center -
Date published: May 28, 2013Map of the derived elevation data at Cogswell Marsh with 2 cm contour lines
Map of the derived elevation data at Cogswell Marsh with 2 cm contour lines. To learn more about this project, visit Modeling Sea-Level Rise in San Francisco Bay Estuary.
Attribution: Western Ecological Research Center
Sea-level Rise Scenario for San Francisco Bay Estuary - Cogswell Marsh
How will sea level rise impact coastal ecosystems like salt marshes? Will plant species change and shift available habitat for local wildlife? Or will the marsh be completely inundated? USGS scientists are conducting extensive elevation and habitat surveys along the U.S. Pacific Coast, and using the data to model sea level rise impact for the next 100 years. This research