Since 1962, VanDemark & Lynch has provided hydrographic surveying services to large corporations and government agencies including The U.S. Navy, U.S. Army Corps of Engineers, and the U.S. Coast Guard. With an array of 4 surveying vessels, we are able to collect data in aquatic environments ranging from ponds and streams to lakes and coastal zones. Our services include: hydrographic surveys, dredge surveys, bulkhead, dike, and pier design, navigation aide placement, riparian surveys, erosion control, flood plain analysis, facility design, and permit application.