Pond Boss Forums GENERAL QUESTIONS Help Leaky Pond

As usual sizing the pump depends. Depends on the flow rate abiliy of the well, depends on how fast you want to replace the water, depends of what sizes of pumps are available for a 4" well as I assume the well pump has to fit into a 4" well casing.

I am in agreement with esshup. The dredge suction activity removed the upper layer that was acting as a "bandaid" type fairly thin seal to hold water within the pond basin. Remove the top seal layer and it exposed the underlying seepage area. Now you have four vertical feet of upper leaky pond embankmant instead of 2 original feet. One foot of water depth can expose 2 to 5 linear feet of pond bank depending on the slope.. This exposes more surface area to drain out water.

My dumb opinion is the bigger the pump is the faster you can refill the pond. It comes down to how fat is your wallet for the long term of keeping the pond more full? It could get costly depending on rate of water loss. It is not really an easy answer - IMO.

I would do some more good homework and investigate a proven product called SoilFloc. It is a high-performance pond sealer made from a polymer-based compound specifically designed to stop leaks in ponds and lakes. It’s a two-part, powdered product that works by forming a flexible, water-tight barrier once it bonds with the soil. There are several YouTube videos showing pros and cons of using the product. This brand IMO seems to have a better reputation compared to other brands. All probably dependent on conditions and type of seepage leak.