I never quite get around to weighing it. Maybe .5 gram or just a little more. Had a unique flow pattern with 3 45 degree angles merging into a pocket that was behind a small boulder that was in a carve out of solid bedrock. It was still producing with every shovel load and I had to leave it to beat the flood that was coming downriver. We caught the flood just as we pulled our canoe into the flow and reenacted the wild rocket burn scene from Apollo 13. Good thing the Coleman weight specs don't actually reflect the true carrying capacity of the craft. Can't wait to do it again next weekend.