Hydropower output at Hoover Dam has decreased by about half since 2000 due to drought, with Lakes Mead and Powell approaching critical thresholds.
Utilities that receive federal hydropower from Colorado River dams are turning to solar power as a result.
Utilities are turning to solar power as hydropower generation would be severely curtailed or cease below critical thresholds.
In Arizona, top water policy officials gathered to discuss extending a drought emergency declaration, citing minimal precipitation, low reservoirs, and record-high temperatures.
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Author summary: Solar power helps offset declining hydropower output.