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Old 04-22-2016   #1
whip's Avatar
Salida, Colorado
Join Date: Oct 2003
Posts: 516
Why are San Juan flows so low?

Less than 25% of the mean at Sand Hills?

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Old 04-22-2016   #2
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Buena Vista, Colorado
Paddling Since: 2005
Join Date: Jun 2008
Posts: 4,207
Information on projected releases from Navajo for the season can be found here:

Navajo Operations Update- San Juan River 4/7/16

My guess is that it's well below average because tributaries like the Animas and La Plata are flowing below their averages for this date....mostly because of the last big storm and cooler than average temperatures.

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Old 04-22-2016   #3
Cortez, Colorado
Paddling Since: 2007
Join Date: Jan 2008
Posts: 151
It's in a dip, because of cool weather, slowing the snowmelt. And they may be charging the irrigation canals, too.
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Old 04-22-2016   #4
cedar city, Utah
Join Date: Mar 2008
Posts: 1,928
That median is also based off of lots of data from the pre-dam era so it biases the current reality a bit (92 year median with 54 years of a dam). I would wager for the last decade or more the mean is closer to 2000 cfs or lower this time of year for the lower San Juan.

Jealous of those with permits in May and June, granted at the forecast levels you could either section in a day.

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