jeffinsgf
Veteran Member
Your plan for a french drain sounds good for your "spring". Be sure to use the sleeved perf pipe. It stays a lot more free-running.
For the low spots that have no where to run, you might put in a "sump". At the lowest point, dig down several feet, and 2 - 3 feet square. Line the bottom and sides with geotex fabric (to prevent soil infiltration). In the center of the excavation, put in a 6 or 8 inch perf pipe that points straight up. Fill around the pipe up to 8 or 10 inches from grade with coarse gravel. Cap the coarse gravel with geotex and backfill to grade with topsoil. Put a plastic grate on the top of the perf pipe. Unless you're dealing with a spring or a leaking pond, that should take care of poor drainage at a low point.
For the low spots that have no where to run, you might put in a "sump". At the lowest point, dig down several feet, and 2 - 3 feet square. Line the bottom and sides with geotex fabric (to prevent soil infiltration). In the center of the excavation, put in a 6 or 8 inch perf pipe that points straight up. Fill around the pipe up to 8 or 10 inches from grade with coarse gravel. Cap the coarse gravel with geotex and backfill to grade with topsoil. Put a plastic grate on the top of the perf pipe. Unless you're dealing with a spring or a leaking pond, that should take care of poor drainage at a low point.