Census information for Amherst (Buffalo County, State of Nebraska). Contains: population counts from the 2010 Census and estimated counts up to 2016, Population Rings and much more.
Please try again later. This is the end point of a 70ft french drain constructed with 6in Multi-Flow product encased in coarse sand. The water is flowing into a 4inch PVC pipe via a tee connection. There is already some flow in the 4inch PVC from the upstream downspout lines that run under the french drain line. 1  Film & Animation.
âThe purpose of a French drain is to effectively drain water, while creating an aesthetically pleasing landscape, says Lunt. You donât want the pipes to show, so in a typical 12- by 12- by 4-inch system, youâd be digging a trench 12 inches wide by 12 inches deep and using a 4-inch pipe.unt emphasizes that your drain should be at least 12 inches below the ground at the groundâs lowest point; depending upon the topography, you may be digging a trench of varying depth.