Planning yard drainage with pump tothe street
My back yard holds water that probably comes from serveral neighboring yards that share a long fenceline. I know some of my neighbors have done some grading and other work to fix their problems so now it's my turn. I have a long back fence line, about 150 feet, that tapers to the two corners. Water will stand in either corner for up to 3 weeks after a good rain. One corner will have standing water about 20 feet into the yard. That fenceline is rotting away because of the water and it makes my back yard useless for my kids. A local landscaper looked at my yard and had a very elaborate plan of drainage boxes and piping to get all the water to one corner and have a pump to send the water to the street, which is between 6 and 12 inches higher than the back corner lowest spots and about 80 feet away. He wanted over $6000 to do it all. I want to install two dry wells with sump pumps in the corners since the yard seems to naturally drain to them anyway. Those two box/pump combinations should greatly improve my yard. The local Lowes should have the rock/gravel, dry well boxes, and pvc piping to run to the street. - I'm not so sure about the pump, wiring, and the best way to power the pumps. Outdoor outlets are available, but I would think a more permanent and automated idea would be best, but not absolutely required. - I also don't know much about pump options. Are they all float actuated or do some just need turned on as needed? - What size pump should be needed and are there precautions on types of pumps to worry about? As far as pumps go, you can get an automatic or manual version-your choice. I wired my waterfall pump like this. I installed a GFCI breaker in the house and ran UF (underground feeder) wire from the house underground to a sealed junction box where the power and the pump connect together. This has worked well for many years. A standard 1/3 or 1/2 hp sump pump should work fine. Maybe if you dig the dry wells deep enough and big enough you wouldn't need pumps. Pumpguy has a great suggestion that good drywells may resolve the water problem without pumps. I've had a couple of houses that had back lot flooding problems. French drains and drywells worked without the expense of wiring, sump pumps and piping. A lot depends on how much water collects at each corner and what type of soil you have.
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