USGS - science for a changing world

Pacific Coastal and Marine Science Center

Seafloor Mapping

Home - Images - Products - Data - Publications - Contact

Lake Michigan

Color-coded shaded-relief bathymetry of Hog Island Reef

Return to the Hog Island home page

Color coded shaded relief bathymetry, see caption below.

Color-coded shaded-relief bathymetry of the area southeast of Hog Island including Hog Island Reef (A). The reef is about 1200 by 1400 m and ranges in water depth from 2 to 18 m. Underwater observations on the reef report flat-lying outcrops of limestone (Somers, 1968). This mapped area is marked by strong northwest-southeast ridges and lineations (B) about a meter high and a few meters wide. An indistinct northeast-southwest lineation is also present, especially in the northeastern quadrant of the image (C). Draped over this mapped region are patches of smoother relief, possibly sand, which forms north-south bedforms (D).

Image metadata

Accessibility FOIA Privacy Policies and Notices

U.S. Department of the Interior | U.S. Geological Survey
Page Maintained By: Laura Zink Torresan