Posted by George J Janczyn on May 4, 2010
I just finished a two-day Colorado River Aqueduct Facilities Inspection Tour hosted by the San Diego County Water Authority and sponsored by the Metropolitan Water District of Southern California (many thanks to SDCWA’s Scott Robinson for inviting me!). I went on this tour to get a closer look at the infrastructure that contributes a large amount of water that San Diego needs to import to stay alive.
San Diego imports about 90% of its water and a good deal of that comes from the Colorado River. It’s one thing to casually acknowledge our dependence on the river, but there’s nothing like getting a close look at some of the engineering that goes into maintaining this immense system.
Stops along the way included San Vicente Reservoir, Twin Oaks Valley Water Treatment Plant, Diamond Valley Lake, Copper Basin, the Whitsett Intake Pumping Plant, Parker Dam, the All-American Canal and Palo Verde Irrigation District farmlands.
On to the pictures (clickable for enlargements).
We began the tour at San Vicente Dam, where a project to raise the dam by 117 feet using a roller-compacted concrete technique is underway. When the dam raise is completed, the dam’s capacity will increase from 90,000 to 242,000 acre-feet.
I took this shot a few months ago, when they were water blasting the dam's face to prepare the surface
Surface is all clean now, ready for new concrete. The scraped rock on the right side shows how much higher the dam will be.
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Posted in Environment, Government, Technology, Water | Tagged: All American Canal, Colorado River Aqueduct, Diamond Valley Lake, Parker Dam, San Vicente Dam, Twin Oaks Water Treatment Plant | 2 Comments »
Posted by George J Janczyn on March 11, 2010
As promised, here are some new photos and video from the San Vicente Dam Raise Project. I didn’t hear a single joke from staffers about what kind of salary increase (raise) they would like, either.
As reported earlier, excavation of the foundation and the hillsides adjacent to the dam, removal of concrete from the top and the face of the dam, and other work to prepare for raising the height of the dam by 117 feet is expected to be completed this summer. Completion of the entire project has been pushed back from the original estimate which was late 2012, with work now expected to be complete in mid-2014. All that prep work on the face of the dam is to make a good bonding surface for the new concrete that will be added.
For complete information, see the official project website: http://www.sdcwa.org/infra/esp-sanvicentedamraise.phtml
(click images to enlarge)
|View on approach, cut in hill next to dam hints at the new height
||Tank at hilltop is for surge control associated with the Second Aqueduct pipeline
|Overall scene from the viewing area
||Water blasting the dam’s face
||Work at the top
(you can get slightly better video quality by selecting the YouTube 480p button at bottom once it starts playing)
Posted in Environment, Land use, Videos, Water | Tagged: San Vicente Dam | 1 Comment »