Abstract: A self-draining pool cover in which a standard pool cover is provided with a centrally located aperture. A collar passes through the aperture sealed by a rubber grommet. The upper end of the collar has a circumferential flange and external threads. An internally threaded nut is received by the collar and tightened. This tightening compresses the grommet, making a water-tight seal. A hose connects the lower end of the collar to the skimmer of a pool. In this manner water travels through the collar down the tube out to the skimmer, preventing the build up of stagnating water on the surface of the pool cover.