In rural Calif., climate action plan takes shape
Tree shade key defense against dangerous heat
MECCA, Calif. — When Limba Contreras moved to the desert community of Oasis, Calif., about 50 years ago, her family relied on a water cooler to keep temperatures inside their home comfortable. Other times, they sprayed each other with a hose outside.
But when the heat topped 100 degrees the cooler was futile, and the hose was a temporary reprieve.
“We suffered because of the heat and because we didn't have any other resource,” said Contreras, a retired elementary school librarian.
Contreras and her family now have air conditioning, but she worries about the lack of shade in playgrounds and fields in the few parks they have.
“In the midst of extreme heat, the children can’t play because there’s no shade,” said Contreras on Saturday in the Eastern Coachella Valley, where elected officials, community leaders, and others gathered at a park for the inauguration of a shade equity master plan.
The Eastern Coachella Valley, an important agricultural area in Southern California, is a hot and arid place, with summer temperatures frequently rising above 100 degrees. Residents in this rural desert in Riverside County are mostly Latinos, Spanish speakers, and lowincome, and many live in mobile homes without air conditioning and work in fields under the sizzling sun.
But trees, green spaces, and buildings that could offer refuge from the sun are sparse, and that can increase dangerous heat stress on the body.
From 2013 to 2023, heat was a contributing or underlying cause of 143 deaths in the Coachella Valley, according to the Riverside County Sheriff ’s Office. They had no statistics for Eastern Coachella Valley, the area where this shade equity plan is in play. Across the United States, heat was a factor in nearly 1,960 deaths in 2023.
Every year, heat kills more people than floods, hurricanes, and tornadoes combined, and experts warn that extreme heat will become more intense, frequent, and lethal with climate change.
Studies have shown that shade can reduce heat stress on the human body between 25 percent and 35 percent throughout the day. Shaded areas can be 20 to 45 degrees cooler than surfaces without it, according to an estimate by the EPA.
Many cities across the US — including New York, Miami, and Austin, Texas — have adopted climate action and resilience plans that use trees as a defense against the broiling stone and asphalt that raise temperatures in urban areas.
But fewer have taken the idea to less developed regions.
“Heat is often talked about through the lens of cities, and that’s an important issue. But what was sort of being left off the table was how heat is affecting rural communities,” said V. Kelly Turner, assistant professor of urban planning and geography at the University of California, Los Angeles.
The Eastern Coachella Valley plan aims to address this issue by recommending ways and places to create more shade via policy changes, smart building choices, and input from community members. The plan would cover the unincorporated communities of Mecca, Thermal, Oasis, and North Shore, near the Salton Sea, California’s largest lake, and not far from the desert resort city of Palm Springs.
Bringing more trees and shade structures to parks, schools, and other areas will “ultimately ensure that youth and their families have somewhere where they can get out of the heat because we are talking about 115 degrees” in July and August, he said. “It’s pretty bad.”
The shade master plan is the latest effort in the US to increase climate resilience in Latino and other marginalized communities, which are disproportionately exposed to extreme heat in part because they have fewer resources like air conditioning and access to green spaces.
The project is being financed by a $644,411 grant from the Governor’s Office of Planning and Research in California, and is a collaboration between the Kounkuey Design Initiative, the Oasis Leadership Committee, the UCLA Luskin Center for Innovation, and the Riverside University Health System.