RTR Commish from Queens, NY
Had originally bought three 3D Battery operated pumps and returned them to by one additonal Diamond Pump. You need at least two 5 gallon buckets to collect and dump the water, but it does pump 20 GPM while puddle deep. When you get to appx 1/4 inch a bit slower, but you can dig a small hole and broom water in direction of the pump for maximum performance. Don't forget to get a pair of rubber boots, as you step into the middle of puddle to start pumping. Best to grease rod after each use, and open cyclinder to drain rocks and mud while cleaning instrument after each use. Will surely prolong the life of product. I tried everything in the past, but this product a homerun!!!!