office (623) 580-0921
fax (623) 580-6855

Land Surveying & Mapping Services

Subsidence and Deformation Monitoring

GCG has monitored the subsidence of dams across Maricopa County for Maricopa County Flood Control as well as the deformation of structures for Arizona Department of Transportation.


Installing monitoring targets on a
retaining wall on SR-87


Permanent reflector targets for
monitoring the wall on SR-87

Aerial photo of White Tanks 3 Dam monitored for Flood Control District of Maricopa County