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.
If you plan on putting sod over your French Drain. Once the drain is finished place a 2â layer of Stone on top of the French Drain. Then add another layer of Weed Mat across the French Drain then add a 2â Layer of Diamond Sand followed by Weed Mat and at least 4â of Top Soil. It is not absolutely necessary to use perforated pipe to create a French Drain.