- HOW LONG WILL HIGH FLOWS LAST IN THE SOUTH FORK...

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Conservation, science and collaboration on the South Fork wild rainbow fishery.

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Environmental Science and Public Policy Research Institute

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Jun
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HOW LONG WILL HIGH FLOWS LAST IN THE SOUTH FORK BOISE? Yesterday we displayed the above chart and noted the flow spike - discharge from Anderson Ranch Dam is at 3,500 cfs, nearly double last year’s summer flow of 1,800 cfs (old timers remember the normal summer flow at 1,600 cfs and in a future post we will report whether 1,800 cfs is the “new normal”). Today we ask how long will these high flows persist in the South Fork Boise River? Anglers will no doubt want to know when safer, slower flows will return. First, let’s examine the chart above. Take note that the flows throughout June 2008 were 600 cfs as Anderson Ranch Reservoir filled. What’s different this year?

HOW LONG WILL HIGH FLOWS LAST IN THE SOUTH FORK BOISE?

Yesterday we displayed the above chart and noted the flow spike - discharge from Anderson Ranch Dam is at 3,500 cfs, nearly double last year’s summer flow of 1,800 cfs (old timers remember the normal summer flow at 1,600 cfs and in a future post we will report whether 1,800 cfs is the “new normal”).

Today we ask how long will these high flows persist in the South Fork Boise River? Anglers will no doubt want to know when safer, slower flows will return.

First, let’s examine the chart above. Take note that the flows throughout June 2008 were 600 cfs as Anderson Ranch Reservoir filled. What’s different this year?