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.
Using both Stone and Pea Gravel. Though more expensive, complicated, and time consuming, using both pea gravel and stone together is one of the best ways to form a French drain. Pea gravel is laid first, then your pipe. Being careful not to injure the pipe, drainlayers form a layer of larger stone on top of the pipe then finish with a layer of pea gravel. The large stone on the bottom helps give maximum drainage while the smaller pea gravel on top makes laying sod over the drain possible.