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.
Overview. A French drain is a perforated drainage pipe that can help channel groundwater out of an area. These drains are relatively low-maintenance, but they do need to be cleaned out about once a year because dirt and other debris can get into the drain through the holes designed to allow water to flow into the drain.tep 3. Use the garden hose to send a steady stream of water down the French drain. Do not start out with the pressure cleaner because if the drain has a major clog, you will just end up with lots of water firing back in your face.