Update: The 'mud whisperer' guy from the Portland dredge conference was actually right

I thought his whole thing about listening to the pump sounds to guess sediment density was just showboating. But last Tuesday on the Columbia River, our flow meter broke and I tried his trick, calling out '40% sand, 60% silt' just from the hum. The lab sample came back 38/62. Has anyone else tried this or am I just getting lucky?

3 comments

3 Comments

the_fiona2mo agoTop Commenter

Heard a similar story from a buddy on a Great Lakes job.

henry5972mo ago

Ever try a backup mic like @the_fiona's buddy?

olivers282mo ago

Told my crew to start listening after our sensor failed last month. The hum changes when you hit a clay layer, sounds like a lower pitch.