Why does my dredge pump sound different after a rainstorm?

The pump noise changes when sediment loads are high. I'm curious if this is normal.

3 comments

3 Comments

Actually, it's usually water getting into places it shouldn't, not the sediment itself. Changes the sound of the cavitation.

mia_thompson131mo ago

My buddy's pump got that weird sound too, and @robert974 was right about water getting in.

parker_flores1mo ago

Totally overlooked how rain brings in all sorts of loose junk, not just mud. Lighter debris hitting the impeller makes a different noise than solid sediment. Colder rainwater can also make the pump housing shrink a bit, altering vibrations. Even small changes in temp or debris mix can throw off the sound big time. Next time it rains, see if the intake's clogged with new crap.