The stable platform of the pontoon and spacious work area seemed made for a very pleasant day. The first vessel was a Fisher pontoon boat, equipped withan Applied Marine System Hydro-Mount-which made sonar installation and vessel launching seamless with its mounting diversity and rotating arm. was tasked to provide bathymetry and ground control for the new spillway construction.The hydrographic equipment supplied and operated by Seafloor remained the same throughout the project however, three vessels were used, each with unique challenges to overcome: Seafloor Systems (El Dorado Hills, California) provided the equipment and on-site operational expertise for the hydrographic survey. (Folsom, California) has conducted bathymetric surveys and back scatter imaging. Department of the Interior, and Bureau of Reclamation will assist the Sacramento region to achieve the level of flood protection.Completion of the auxiliary spillway is scheduled for late 2017. The $900-million cooperative project between the U.S.
Carried out in phases, this project requires surveys from land and water to ensure successful completion. Construction of a new auxiliary spillway is in progress, which will provide a means for a steady water outflow during an increased water flow event. Despite the low risk of a damaging occurrence, it was decided (under the Reclamation Safety of Dams Act) that preventive measures needed to be taken to protect those living downstream. It is responsible for providing irrigation, drinking water, and electricity to parts of California, as well as flood prevention for the areas situated south of the lake. Nestled Northeast of the city of Folsom, California, sits the Folsom Lake-formed by an existing dam on the North Fork and South Fork of the American River. Sacramento River-Riegl VMX-250 & CS6 Mobile LiDAR System Survey Vessel – 24’ Fisher pontoon configured for multibeam & mobile LiDAR acquisitionĪpproach Channel Acceptance Survey – Survey vessel acquiringĪpplanix POS-MV™Wavemaster Inertial Navigation System
Upstream approach channel & spur dike, plan viewĪpproach Channel Acceptance Survey – Multibeam TIN model of Upstream approach channel & spur dike, perspective view
Auxiliary Spillway and Spillway Chute under construction to the right (©Google Earth)Īpproach Channel Acceptance Survey – Multibeam point cloud of Department of the Interior, and Bureau of Reclamation will assist the Sacramento region to achieve the 200-year level of flood protection.Completion of the auxiliary spillway is scheduled for late 2017.Īerial View – Existing Spillway on left. Carried out in phases, this project requires surveys from land and water to ensure successful completion. Construction of a new auxiliary spillway is in progress, which will provide a means for a steady water outflow during an increased water flow event. Despite the low risk of a damaging occurrence, it was decided (under the Reclamation Safety of Dams Act) that preventive measures needed to be taken to protect those living downstream. It is responsible for providing irrigation, drinking water, and electricity to parts of California, as well as flood prevention for the areas situated south of the lake. Nestled Northeast of the city of Folsom, California, sits the 11,450-acre Folsom Lake-formed by an existing dam on the North Fork and South Fork of the American River. Implementation of a Multibeam Echosounder and Terrestrial LiDAR in Support of a Dam Spillway Construction Project
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