I have a Garmin gpsmap 76cx. Looking for maps for paddling rivers, streams, and lakes and associated wet places. The Garmin site is somewhat lacking in maps for this, or I ain't looking in the right place. I see the coastal maps, but I'm looking for something else. TOPO maps don't seem to fill this need very well. Any ideas?

Bought the new all USA coast and eastern canada map from Garmin into a 76csx.

Outstanding navigation as in the San Juan's steep dropoffs and sea mounts but more so here in SWFL's 2' tides and sandbars.

Depth location allows greater speeds either direction on an exact screen boundry, sandbars are analyzed for navigation.

Taking accurate info off the GPS then applying to real seen conditions amplifies your sensitivity to sea surface forms usually not seen until you're in there on it.