A friend shot a deer and had to pull it across the Heart River last night. Last Sunday while heading to church, the Heart had a few skims of ice on it.
I hope to hit the ice next weekend. NDSU NDAWN has soil temp sensors across the state at various depths. Lake temps mirror pretty close soil temps (there's a lag for Devils and Sak). This link shows the soil temps. https://ndawn.info/soil.html