Does Anyone Know how long it takes to Hatch an Egg?

The house is coming along great! We finally have a crew of actually painters thanks to Momo tracking down a guy at the gas station during her visit. These guys are awesome and more importantly fast and cheap! On a different note, does anyone know how long it takes for a goose to hatch an egg? We found this nest leading out to our dock, and it turns out geese are extremely protective. Scrappy found that out the hard way when he went down to see what was going on. And as luck would have it, the nest is directly blocking our access to the dock. Since we aren't going to destroy the nest, I guess we're just going to have to wait her out. The good news is though that we'll have baby geese at some point.

Here is the little stream that runs by the house. We can hear this from our bedroom window.