The Willett, Hofmann & Associates, Inc. Land Surveying Department provides ALTA/ACSM surveys, boundary and property surveys, topographic and route surveys, and platting and development surveys, as well as construction staking services for project of all sizes and complexities. Our Land Surveying Department is uniquely equipped and qualified to perform bathymetric surveys. Using echo-sounder technology, we can collect accurate underwater data to produce topographic surveys of the bottom of rivers, lakes, ponds and other bodies of water.