Abstract: An impact sprinkler having several specific features is disclosed herein. One such feature resides in the use of a plastic water deflector having a number of cooperating water deflecting surfaces which improve the overall water distribution pattern of the sprinkler, specifically at the outlying areas of the pattern. Another feature of the sprinkler disclosed herein resides in the particular configuration provided for allowing the water deflector to pibot vack and forth. Regarding this second feature, the sprinkler disclosed herein typically includes a journal pin about which the water deflector can pivot. Located between this pin and the water deflector is at least one longitudinally extending slotted passage open at opposite ends. This passage provides a path through which abrasive material can escape should such material get lodged between the pin and deflector.