More like a dozen than 70
Only Meager Creek, Keyhole Falls, Skookumchuck and Sloquet are worth going to.
You might be able to get to Skookumchuck (the one with the beer cans) if the road is plowed. You definitely won't be able to get to Meager or Keyhole until May (35 km ski up gated road plus bridge is out) and Sloquet won't be accessible until April at the earliest for similar reasons.