Although rare at this point to still see no flow,
The summer flow season still has a good couple months left.
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| This calendar chart displays the history of discharge through the S-12s from 1970 to present. Black data points indicate times of high flows and where you see no dots indicates no flow. Although not unprecedented (i.e. the S-12s are usually flowing at this time of year), similar delays in the onset of flows through the gates also occurred in 1989, 2007 and 2011. |
Late September is the furthest summer flows through S-12s have been sustained.
That happened during the epic drought year of 1989.
Typically the S-12s are releasing around 1,000 cfs into the Park.
