Archive for August, 2014

Google Earth Oblique View 1

Alaska Multibeam Hydrographic Survey and RTK GNSS Topographic Survey

eTrac is the prime contractor for a 3-year hydrographic survey contract with the US Army Corps of Engineers, Alaska district.  A recent Port Condition Survey was conducted in Unalaska, Alaska.  The survey was conducted in June, 2014 and involved multibeam hydrographic surveys, RTK GNSS topographic surveys, a static GNSS control

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Multibeam data collected in the Oakland Federal Channel.

Dredging Season Begins

This month marked the start of a busy season for dredging in the San Francisco Bay. eTrac is currently working on multiple projects related to port, marina, and channel maintenance. eTrac works closely with the dredging contractors and the US Army Corp of Engineers to complete pre, post and conditional

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