Description
Published:Began with 25th ed., Apr. 25/98.
Item Description:Depths shown by isolines and soundings.
"Formerly LS 524, 1st ed., 1856 KAPP 1327."
"Soundings in feet."
Includes source diagram, table of channel depths, and table of low water datum for Lake Michigan--Huron.
Editions kept current by periodic online updates.
Physical Description:1 online resource (maps) : color
Publication Frequency:Irregular
Format:The .jpg versions of these maps require Adobe Photoshop or Adobe Acrobat 9 Pro to view.