earth working equipment as above mentioned only a relatively small opening 12 need be made in the basement floor 11 to receive water draining downwardly along the waterway profile 15 from the crack 14 the opening generally can be made with simple tools such as pick and sledgehammer or a small pneumatic hammer the opening 12 may later be patched with conventional patching cement obtained from a local hardware outlet this collected water drains downwardly through the backfill crushed rock and away from the foundation via the conventionally supplied drain tile not shown referring to the views of fig2 and 3 it will be observed that the wall patch 13 is preferably an integrally formed member of extended longitudinal length usually in the order of eight 8 feet to reach cracks occurring below the usual foundation height the height of the basement foundation ordinarily extends above ground line and leakage cracks are rarely found in the extended height portion the patch 13 may be formed by machining a solid sheet of conventional high density polyethylene hdpe it is conceivable however to form the patch 13 by conventional extrusion or like molding procedures from conventional plastic suitable for such techniques the patch 13 preferably includes a pair of laterally spaced upstanding curbs 18 extending longitudinally coextensive with the length of the patch and defining the waterway profile 15 therebetween each of the curbs.