I am thinking of purchasing approximately 25 acres for a 3-5 acre lake. I wanted to ask your advice for what type of terrain I should be looking for (i.e. a valley with a stream, a parcel sloping in one direction, very hilly, lightly wooded, etc.) Are there other things I should consider (nearby farms for waste run-off, spring / well availability, soil, groundwater tables, zoning)?
Hi SWK,
Nice to hear you enjoyed the project.
You are in for a heck of a ride when it comes to buying land and building a lake on it. If you can find one already there, that would be the cheaper, smarter way to go.
If you want to build, the best would be a piece of land that you can dam up a valley that's all clay. The ideal situation would be surrounded by grassy pasture that's large enough to carry all sorts of water to your pond site. Measuring how many acres you have around you to catch the runoff and how much rain you get in your area will decide how big of a pond you can build.
Daming up a creek can be expensive if you need permits and dealing with however much water is coming down the creek. Then there is the concern of what is coming down the creek from fertilizers to unwanted fish. Then there is the issue of what happens during a heavy rain and how much water can the pond hold, and how much water can the spillway handle?
Water running over the dam is how dams fail. Too much water is a force that you can only wait for it to end and hope that you still have a pond.
To hold water, you have to have clay. Nothing else works very well, and to hope for the best with other soils is a good way to waste a lot of time and money. Make sure you know what you soil is. In most areas, there are layers to the soil. You might have to dig down a ways to find clay, or you might not find it at all. Sand is the worse, but gravel is just about as bad.
Springs are something to be nervous about. If its running water, then it's kind of like a stream. Ideally, if you can find a spring and build a pond where the water will run into it, you are golden. If you build the pond on the spring, it is likely that the water will flow the other direction and actually leak out of the pond and into the ground through the spring.
Good luck on your search and remember that it will cost ten times as much as you think it will to build the pond.
Eddie