Does the river freeze over in Chamberlain area? If so, how much ice fishing gets done on it?

Not this year but most years it will.

Does it freeze hard enough to ice fish it? Drive on it?

Fish yes not much driving on the ice in most places very often. Check out snake creek south of chamberlain also.

The lake I’m on is open in spots and there’s no current. Chamberlain has a swift current because of the bridge ripraps that blocks the flow of the river by 3/4 that 1/4 opening is swift. Fort Thompson has some still water spots away from the spillway it’s just not the place to go yet with the warm temps we have had so far.