Bay Marine Services has provided high-resolution sweep surveys in order to assess the hydrologic changes to the Lower Novato Creek from 2008 to 2015. In order to provide high-resolution shallow water data BMS mobilized our Ross 875-5 five-channel sweep system integrated without Coda F-185 motion and position system aboard the S/V Otter. The Ross system produces 5×5 gridded data in water depths as shallow as four feet.