Dataset description: Digital elevation model (DEM) of the Cache Slough Complex, Sacramento-San Joaquin Delta, California

This metadata describes a digital elevation model (DEM) created from bathymetric and topographic data collected between 2004 and 2019 in the Cache Slough Complex (CSC), northern Sacramento-San Joaquin Delta, California. We merged the newly collected bathymetric and topographic data presented in this data release (DOI:10.5066/P9AQSRVH) with 2019 surveys by the California Department of Water Resources (DWR), 2017 USGS Sacramento Delta Lidar, and 2004 bathymetry data from the Army Corp of Engineers. Small gaps of missing data were filled with existing DWR/USGS Delta DEMs to produce a seamless DEM of the Cache Slough Complex with a grid resolution of 1 m. Remaining gaps in the DEM are areas where there is currently no available data.

Version	1
Keywords	sea-floor characteristics, topography, multibeam sonar, digital elevation models, geographic information systems, geospatial datasets, lidar, marine geophysics, bathymetry, bathymetry measurement
Data types	LIDAR, Multibeam
Format	geoTIFF
Amount	660 MB

Contacts

Contact	Theresa Fregoso PCMSC_data@usgs.gov

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Location of materials and files

Public files	https://www.sciencebase.gov/catalog/file/get/5d781129e4b0c4f70d020cdd?name=DEM_CacheSloughComplex_2020_NAVD88_u83_meters.zip https://www.sciencebase.gov/catalog/item/5d781129e4b0c4f70d020cdd https://doi.org/10.5066/P9AQSRVH
Metadata	https://cmgds.marine.usgs.gov/metadata/pcmsc/DataReleases/ScienceBase/DR_P9AQSRVH/DEM_CacheSloughComplex_2020_NAVD88_u83_meters_metadata.xml Outline - Questions and answers - Text - XML

Activities and equipment

Activity	Equipment
2015-642-FA	Waverunners
2017-649-FA	Trimble R7 GPS (AS) Andrew Stevens submitted; no serial numbers yet
2018-684-FA	SWATH plus-M A Phase Measuring Bathymetric Sonar (PMBS) also known as an Interferometric Sidescan Sonar (ISS) with a frequency of 234.5 kHz.