Mainer, that correlates to what I saw with the dewatering pumps. I upsized my outflow pipe from 3"-4" going to plastic pipe as soon as I could. Running the pump at a bit over idle reduced fuel consumption further, but I saw about a 50% reduction in water moved. Using a 6 gallon outboard motor tank as a remote tank I could run the pump for about 28 hours on 3/4 throttle, and about 23 hours on WOT. I had about 250 feet of 4" pipe on the discharge side to get it further away from the pond.

We will be starting a project as soon as we can get the OK from the county, and the contractor said that if the project needed to be dewatered, they'd dig a 30' deep french drain around the perimeter of the pond area, backfill and connect the drain to surface pumps. Last project they did they used 6 diesel pumps, each connected to the 6" french drain system. It was not cheap they said.

www.hoosierpondpros.com


http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).