Originally Posted by FishinRod
Do you know how to read a topographic map and determine the "drainage area" above your proposed pond location?

You absolutely need that information to determine the correct answer to your questions about the dam.

Thanks for the info on the spring. As for drainage area, there is no watershed going into this pond. Basically there is a ditch to the north of the pond so really the only surface runoff would be from the surrounding field that isn't going into the ditch or blocked by higher ground such as the driveway. It might be 1-1.5 acre of field that would provide runoff into the pond. I've only ever seen any standing water in this low area during the spring snow melt and after a ton of rain. It disappears quickly. So I'm hoping just a spillway at the end of this dip will be sufficient?

I'm also curious on questions 2 and 3 around the spacing between pond and berm and the time to dig the pond with the excavator and dozer.

Thanks