Jeff Liebermann
2024-09-10 17:56:59 UTC
This is for Tom.
(Sept 2013)
"Cull Canyon Reservoir / Dam"
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.
(Sept 2013)
"Cull Canyon Reservoir / Dam"
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.
--
Jeff Liebermann ***@cruzio.com
PO Box 272 http://www.LearnByDestroying.com
Ben Lomond CA 95005-0272
Skype: JeffLiebermann AE6KS 831-336-2558
Jeff Liebermann ***@cruzio.com
PO Box 272 http://www.LearnByDestroying.com
Ben Lomond CA 95005-0272
Skype: JeffLiebermann AE6KS 831-336-2558