Where is gold deposited downstream of abandoned bridge support/pier?

[Old Dirtbag]

Hello All,

I have a spot that I want to dredge that is downstream of a bridge support/pier that has been abandoned. Where does gold tend to get deposited around/behind such structures? Any advice is greatly appreciated!!

Thanks,

Old Dirtbag

 

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[xr7ator]

Think of the structure as a riffle of a sliucebox. Adhere to all other known basics of logic and of course, gold is where you find it.

Looking forward to seeing pics of the yella. GOOD LUCK!

 

[QNCrazy]

Don't just focus downstream. You'll want to look directly upstream from the pier. When the water is flowing, the pier creates a low pressure zone in front of the pier.

 

[Old Dirtbag]

Thank You for the info!! The water has caused a V-shaped deposit around the pier-the front, leading edge being the point of the V and the "legs" of the V are beside and downstream of the pier. What area would you dredge first?

 

[Old Dirtbag]

Thank You So Much!!! I will definitely try that area!!

 

[N-Lionberger]

How big are they?

 

[Goldwasher]

digging under any bridge especially it's pilings is typically illegal

 

[Hoser John]

Adjacent and even sub-adjacent digging is a huge fine in california on active highways. Caution is needed. John