Pond Boss Forums POND CONSTRUCTION Selecting a site Do Ponds Need Constant Flow of Water?

Welcome to the forum. Typically you want the banks to be no steeper than 3:1. Even at that slope, it's a little tricky getting up from the water level if the banks are slippery. A more gentle slope makes walking and mowing (if necessary) easier. Below the water level, IIRC good clay can withstand 2:1 or steeper, but forget about trying to walk out.

Try to plan the pond so the stream, even at 100 year flood event levels won't overflow into the pond. Even tho the pond is relatively small, if it gets a bunch of unwanted fish or critters it's still a heartbreak if you have to kill it and start over.