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Pardee Dam is high enough


Thursday, November 12, 2009 6:28 AM PST

We pulled into a construction area alongside the Folsom Dam Reservoir on the American River.

A formation of big earth movers were lined up in the yard. The reservoir was very low and it appeared that those big earth movers have been used to scoop out a huge amount of soil from the reservoir basin, thereby increasing the capacity of Folsom Lake.

Why not consider this approach at Pardee Lake? Instead of adding 30 some-feet to the height of the dam, why not leave the dam as is and increase the size of the reservoir?

If you like math problems, work on this: start with an acre of land, one foot deep, or a acre foot; divide the 43,560 cubic feet by 27 and come up with cubic yards.

Now contact Frank Alegre and ask him how many thousands of yards of soil and gravel his fleet of trucks hauled from the foothills to reinforce the Delta levees at the time of the last super flood.

Next, ask the premier math instructor at Lodi High, Mr. George Kurkis, if one acre of solid is equal to 1,611 cubic yards. If correct, the removal of this amount of earth from the reservoir basin would increase the capacity by one acre foot.

Now, if Mr. Alegre says it can be one, multiply all figures by, say, 200,000, giving us 200,000 acre-feet of water. This amount of water is the stated usage of 100,000 households annually.

EBMWD is developing a 30-year projection on the amount of water needed. The district has 30 years to enlarge the reservoir capacity.

Others may join in the project and locally, we may have more water.

The dam is high enough.

James McCarty
Lodi

Reader Feedback

veritas wrote on Nov 12, 2009 7:05 PM:

" The area/volumne for every inch at the top of a "V" is much greater than each inch at the bottom, depending very little on the angle of the "V". "

Inquisitor wrote on Nov 12, 2009 6:26 PM:

" (Another armchair engineer, apparently.) Simply because increasing capacity by dredging adds excess stress on the dam. Increasing the dam height should also incorporate some structural changes to support the excess stress due to the increase in capacity. "

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