Blageddy Stream is a small brook in Slater Park in Pawtucket, Rhode Island. It connects the Slater Park Duck Pond, Friendship Gardens Pond, and the Blageddy Swamp to the Ten Mile River. Originally, the Blaggeddy Stream was a much larger Swamp before the creation of the park. The water that was there was routed into a narrow channel, which is the Blageddy Stream that is there today.