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.
French drains are quite simple: in essence they are just trenches filled with gravel, with sand on top of that. Often, you'll see French drains defined to include a drain pipe as well, though the traditional design is simply the gravel-filled trench. The advantages of French drains are low cost and easy installation. In addition, they can be covered over with turf after installation, making them less conspicuous. 1  Dig the trench.