clearwater river smallmouth bass

Aaround what time of year do the smallmouth bass on the clearwater river start prespawn and actual spawn?
Answer: 
The spawning period is typically in mid to late May but can vary ~ two weeks earlier to two weeks later. Many things influence when fish spawn.  Water temperatures, the hydrograph, photoperiod, the availability of proper-sized substrate etc. all play a part.
Answered on: 
Thursday, January 22, 2015 - 7:53 AM MST