ANDREGG GEOMATICS has a diverse portfolio which includes projects for the U.S. Army Corps of Engineers (USACE), California Department of Water Resources (DWR), Placer County Water Agency (PCWA) and other Federal, State and local agencies. We provide LiDAR, Hydrographic, Topographic, Photogrammetry, Digital Aerial Imagery, Orthophotography Surveying, and Bathymetry services for surveying and mapping of dams, reservoirs, watershed, canals and aqueducts, FEMA, FIRM mapping and other flood protection / planning projects and related studies and improvements.


PCWA FERC Middle Fork of the American River Relicensing
Placer County, CA
ANDREGG GEOMATICS assisted Placer County Water Agency (PCWA) in their Federal Energy Regulatory Commission (FERC) relicensing for the Middle Fork of the American River, located in remote portions of the Sierra Nevada Foothills of Placer County,... Read more
Wishon Dam Radial Gates HDS Scanning
Frenso, CA
ANDREGG GEOMATICS teamed with HDR, Inc and PG&E to perform on-call High Definition Scanning for the Wishon Dam. The intent of the project was to determine the extent of the cavetation damage to Radial Gate 6 in an effort to determine engineering... Read more
USACE Napa River Flood Protection
Napa, CA
The Flood Protection Project in the City of Napa involved about six miles of the Napa River, from Highway 29 at the Butler Bridge on the south to Trancas Street on the North. Napa Creek improvements extend for about one mile, from the Creek mouth at... Read more
California DWR, Central Valley Flood Evaluation Project (CVFED)
California Department of
The Central Valley Floodplain Evaluation and Delineation (CVFED) Program is one of several programs within the FloodSAFE Initiative. ANDREGG is a key member of the AEC team provided 300 first order survey control points and monuments for the... Read more
Folsom Joint Federal Project Auxiliary Spillway Control Structure
Folsom, CA
ANDREGG is providing survey control and as-built surveys of existing vent tunnel and gates within the dam. Control and tunnel surveys were needed for construction of 1,200 feet of new tunneling within the existing dam to precisely merge with... Read more
USACE Marysville Ring Levee Design Surveys
Northern California
ANDREGG GEOMATICS has assisted the United States Army Corps of Engineers (USACE) with a variety of levee projects, performing surveys of federally designed and constructed levees; providing information to develop hydraulic and economic models to... Read more
American River Auburn Dam Site, Pump Station, Channel Restoration
Auburn, CA
ANDREGG GEOMATICS provided all surveying and mapping functions for the design of the pump station and restoration of the American River channel at the Auburn Dam site.  Hired by Placer County Water Agency (PCWA), ANDREGG's critical tasks involved... Read more
South Yuba Levee Mapping, Three Rivers Levee Improvement Authority
Yuba County, CA
ANDREGG GEOMATICS Provided topographic mapping services for the TRLIA project for constructing improvements along the South Levee of the Yuba River near the community of Linda, CA.   ANDREGG performed control surveys and aerial mapping to produce a... Read more