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.
Once you have treated the minor clog, hose some water down the drain. If the water does not flow freely to the outlet, then you might have a serious problem. Medium Clog. To clean a French drain with a medium clog, you will need a pressure cleaner.When you use a pressure cleaner to unclog the drain, chances are that the water from the cleaner might fire back at you when it hits the clog.nce you have treated the minor clog, hose some water down the drain. If the water does not flow freely to the outlet, then you might have a serious problem. Medium Clog. To clean a French drain with a medium clog, you will need a pressure cleaner.