Water tight outlet cover

An outlet cover for an outlet having a cylindrical socket with a retention flange, said cover comprising:

• a base having a base flange including a bottom surface and an upper surface joined to an upstanding ring extending above said upper surface, said upstanding ring having an inner diameter and an outer diameter, said upstanding ring including an annular notch having a diameter smaller than said outer diameter,
• a cap having an outer ring and a plug, said outer ring terminating in a rim surface of said cap and said outer ring having an inner diameter and an annular rib extending radially inward of said inner diameter and terminating at a top spaced from and opposite said rim surface, said outer ring being spanned by a center disc attached to said outer ring, said center disc supporting said plug and said plug extending from said center disc, said plug having an outer diameter of said plug adapted for fitting within said cylindrical socket, said cap having a resilient tether joining said base to said cap, said annular rib on said cap adapted for mating with said annular notch on said base for an interlocking fit, said annular rib on said cap including a notch partially through said annular rib, said notch in said annular rib on said cap extending from said rim surface toward said top of said annular rib, said tether fitting within said notch in said cap when said annular rib is mated with said notch on said base.