Yep, Lake Of The Ozarks = LOTO, also known as THE SHOOT OUT... Which is the Osage River (and tributaries) that flows from way way west (Kansas City area) and has several arms/lakes as shown below... As you can see it covers a VAST area...
As nice as LOTO is, the White River basin - Table Rock Lake/Bull Shoals Lakes is far superior... Pomme De Terre Lake is near the Wheatland - LUCAS drag boat facility and is a BEAUTIFUL lake with very rocky shoals/shores and oak trees...
The state of Missouri is "The Cave State" and is like swiss cheese in it's SUBTERRANEAN STRATA (mostly limestone / dolomite) so there are literally rivers flowing under much of the state...
Attachment 65973
Map of the MAJOR/LARGE spring distribution which is mostly south of the Missouri River basin. NOTE: The legend is in MILLIONS OF GALLONS PER DAY, there are smaller springs all over the entire state north and south due to the swiss cheese limestone strata:
Attachment 65974
Roaring River State Park spring:
Attachment 65975
Cave Spring in Shannon County:
Attachment 66012