Sunday, April 24, 2011

FURTHER THOUGHTS ON IDEAL DROUGHT PLAN

The previous post presented our proposal for the ideal drought management plan. Basically the plan is to maintain a constant level on Lake Thurmond until rain inputs cause the release rate to drop below 3600cfs. At this point hold release rates at 3600 cfs until rain fall permits operation at full pool with a release rate in excess of 3600 cfs.

Since publishing that post several other positives to this approach have become evident:
1) this would return the Savannah River below Thurmond Dam to the flows it used to have prior to the dams with the exception of avoiding the ravages of floods and droughts.

2)3600 cfs is the flow equivalent to the average annual rainfall during the droughts of record. At that release rate we should not lose the lakes regardless of how long the drought continues. Any higher flows could empty the conservation pool of Lake Thurmond and destroy the basin if a drought goes on long enough. Basically the reasoning is you can not spend more than you have coming in without going bankrupt.

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