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Salt River near Roosevelt runs far above normal
September 27, 2026
The Salt River near Roosevelt is running at 308% of normal on September 27, 2026, reflecting heavy monsoon runoff from the eastern highlands. High streamflow in Salt and upper Gila tributaries supports riparian habitat and helps offset the region's chronic water deficits downstream.
Nine federally listed species range into Gila/Salt basins
September 27, 2026
Nine federally listed species have mapped ranges overlapping the Gila/Salt Intermediate Basins, including five Endangered species: California least tern, , Gila topminnow, Southwestern willow flycatcher, and Yuma Ridgway's rail. Two Threatened species and one Proposed Threatened species also occur here, though no designated critical habitat overlaps the area.
Phoenix Airport logs a warmer-than-normal late summer
September 27, 2026
Mean daily high at Phoenix Airport was 103.6°F for the 30 days ending September 27, 2.1°F above the 1991-2020 normal of 101.5°F. Mean daily low was 83.8°F, 5.1°F above normal, marking an exceptionally warm late summer in the region.
More about Red Swamp Crayfish
Red swamp crayfish found in Central Park
October 3, 2026
(Procambarus clarkii), an introduced species, was observed 2026-09-23 in Central Park. This invasive crayfish can outcompete native crayfishes and alter freshwater benthic communities by burrowing and bioturbating sediments.
Red Swamp Crayfish (Procambarus clarkii) and Virile Crayfish (*Orconectes…
June 26, 2026
(Procambarus clarkii) and (Orconectes virilis) are now sharing habitat in the Jordan River corridor. Over the past six months, a dozen sightings across the valley tell a quiet story of ecological shift — two crayfish species coexisting in urban waterways where neither is native. Red Swamp Crayfish ranks among the world's most damaging invasive freshwater species, a Gulf Coast native that thrives in warm, disturbed waters. Both species are aggressive foragers that consume aquatic vegetation, small organisms, and detritus, restructuring the food webs they enter. In the thermally enriched, slow channels of an urban river system like this, they find ideal conditions to establish and spread.
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