AFFILIATED RESEARCHERS conducted side-scan and multi-beam sonar surveys in Lake Huron, to provide project engineers with “as-built” survey data and imagery of the newly constructed municipal water intake structure located 5 miles offshore in Lake Huron, Michigan.

AFFILIATED RESEARCHERS pontoon-pilothouse survey vessel; Klein 5000 Hydrochart sonar system; Trimble RTK-GPS survey equipment; and an Applanix motion sensor were utilized by its trained Hydrographer and Technicians to conduct high-resolution side-scan and highly accurate multi-beam sonar surveying at the project site.

Local survey control points were established by AFFILIATED RESEARCHERS at the project staging area at 0.05’ accuracies using RTK-GPS survey equipment and recognized National Geodetic Survey “OPUS” methods. These locally established survey controls were utilized by AFFILIATED RESEARCHERS for the project RTK-GPS base station and for survey equipment QAQC. To assure real-time survey accuracy and reliability, highly-accurate RTK-GPS corrections were transmitted from the base station to the Applanix motion sensor onboard the survey vessel.

Using GPS navigational equipment and software, AFFILIATED RESEARCHERS navigated its survey vessel to the location of the water intake structure. The side-scan and multi-beam data were collected with Klein SonarPro software while the survey vessel was navigated on survey track-lines at the project site using HYPACK hydrographic software.