The Colorado River had a great 2019, with Lake Mead rising the most in a decade due to heavy flows into the river stemming from last year’s primo snowpack. But 2020 isn’t shaping up as well, with a dry monsoon season and fall paving the way for expected below-average spring summer runoff. Right now, the April-July runoff is supposed to be 82% of average. That compares to 145% of average in 2019, the second-best runoff season in the past 20 years.
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Colorado River's flow is forecast to decline from 2019