ield Drainage - Installing a Catch Basin and Main County Drain with CSI In the field with CY Schwieterman Inc as they install a main county field drain in Darke County Ohio. In this video they are installing this to replace the original drain that was put in the early 1900's. In this video I show them installing a catch basin into a 30 inch drain that will Y off into two 24 inch drains. After the Catch basin in installed they work on installing the 24 inch drain line. Field Tile or Farm Drainage in vey common in our area as well as much of the Corn Belt region. I have other farm drainage videos on my channel of installing the systematic drainage line in the rest of the field that will eventually work into a main tile like this.