Re: Cull Canyon Deep Mud

On Tue, 10 Sep 2024 10:56:59 -0700, Jeff Liebermann wrote:

This is for Tom.
 
(Sept 2013)
"Cull Canyon Reservoir / Dam"
<https://www.youtube.com/watch?v=OvZDs5JUr1M>
 
Compliments of the Castro Valley Sanitary District.
<https://www.facebook.com/CVSan>
 
Looks like the reservoir has been a problem for at least 11 years. The
video explains why fixing the deep mud problem is difficult.  More
recent photos show a functional lake.  This page explains the
sedimentation problem:
<https://en.wikipedia.org/wiki/

Cull_Canyon_Regional_Recreation_Area#Reservoir_sedimentation_issue>

I really like this proposed (political) solution:
"Alameda County engineers have proposed to notch the reservoir's weir.
This would let water flow downstream, leaving the accumulated sediment
behind. Ackerman said that cost would be less than $1 million, and that
the seismic threat would be eliminated because the (California)
Division of Safety of Dams would no longer consider it a dam if it
didn't hold back water."
 
Hey Tom.  On your next ride, could you check if the dam has a notch?
 
In any case, there's no indication that the deep mud will impact Tom's
bicycle rides or the use of the various trails:
<https://www.ebparks.org/sites/default/files/cull_canyon_map.pdf>
Perhaps if you stop spinning your wheels there might be less silt.

Do you notice that everything I said that was described by you and flunky
to be untrue was described? When the lake got to be too shallow it
couldn't retain sufficient O2 to keep the fish alive. Why do you suppose
they call it a dam and John didn't?

I would think that this should be a lesson for you but I doubt it will be.