Making a strategy game under these restrictions has to be quite difficult, but I think you pulled it off well. As the other reviews have mentioned, the controls are a bit much at first, though I was able to get used to them after a few tries (and after losing my first savegame to an untimely heatwave).
The early game was hectic and intense, forcing me to juggle scavenging/planting/building, and of course having to watch the aquifer. But once I'd managed to bring in a harvest and build up the shelter enough to survive that event, it became much easier. After day 50 or so, I had the survivors spend most of their time resting, because I was paranoid about the aquifer running out. If you're interested in expanding this game after the jam is over, perhaps adding another screen or some more events might be neat.
All in all, this was a very interesting experience. Well done!