Perma Basin is the patented basin from Turf Drainage Co. of America that have permeable sidewalls.They not only collect surface water, but also the seepage water that collects around the basins.
One of the most popular features of these basins is the simplicity with which they can be raised. Every superintendent has dealt with basins that have become too low because of thatch accumulation, or maybe they were just installed a little too low.
With a Perma Basin, there is no need to dig the basin up and reset it. Simply take an additional frame, set it on the existing basin, and you will raise the elevation by 1¾” in less than 10 seconds.