THE carcasses of salmon, trout and more than a dozen other newly extinct native species lie in dry streambeds around California.
Exhausted firefighters in the Sierra Nevada battle some of the biggest wildfires they’ve ever seen. And in Central Valley farm towns, more and more parents hear the squeal of empty pipes when they turn on water taps to cook dinner.
A new report by the Public Policy Institute of California non-profit think-tank paints that distressing picture of California for the next two years if the state’s driest four years on record stretches further into the future.
Written by water and watershed experts working at the policy centre, at the University of California, Davis, and elsewhere, the report urges California to do more now to deal with what researchers project to be the biggest drought crises of 2016 and 2017 — crashing wildlife populations, raging wildfires and more and more poor rural communities running out of water entirely.
A separate study published Thursday in the journal of the American Geophysical Union warns that climate change is making drought the new normal in California.
By the 2060s, climate models show California in a condition of semipermanent drought, broken only by short, hard rains, researchers said.
Already, higher temperatures from climate change have made the current drought at least 15 per cent worse, they said.
So far, of all the sectors dealing with the current drought, California cities are doing relatively well thanks to the lessons of past droughts, researchers said in the analysis by the Public Policy Institute of California.
Meanwhile, farms have been able to turn to pumping well water to make up for having half as much surface water for irrigation as normal.
With California wildlife, by contrast, “we’re really looking at widespread crisis” if the drought continues, Ellen Hanak, director of the think-tank’s water policy centre, said in an interview Wednesday.
California’s freshwater habitats and forests, along with their wildlife, have experienced the most severe impacts of the drought so far, the study concluded.
Lack of water means 18 species of native California fish, including most native salmon and steelhead trout, face an immediate threat of going extinct in the wild, the report said.
Greatly reduced water deliveries to bird refuges and rice fields — the flooding of which provides crucial habitat — means there is dangerously little room and food for the 5 million migratory birds that fly through the Central Valley each year and a high risk of deadly disease for the birds, the study said.
For California’s environment, officials should be thinking more strategically about how best to use what water is left for wildlife, and preparing “conservation hatcheries” to safeguard native fish species that are on the verge of extinction in the wild, it said.
Hanak also called wildfires a tremendous risk as overgrown forests dry in the drought. Fire and forest agencies already are working to reduce the overgrowth that contributes to making those fires bigger and harder to control, researchers said.
After the environment, rural communities have been hardest-hit by the drought, the study said. As of last month, more than 2000 domestic wells were reported to have gone dry, mostly in the Central Valley and Sierra Nevada. More than 100 small public-water systems around the state have been cited as needing emergency water supplies.
State and federal efforts to help those communities have been increasing but remain stopgap, the study concluded. It urges the state to do more to track areas in need of help and come up with longer-term water supplies to replace wells that have likely gone dry for good.
The study advises against counting on El Niño, a sporadic weather pattern that can bring strong storms, to break the drought. State water officials similarly have tried to temper public hopes for a wet El Niño year.
El Niño is historically associated with wetter winters in California only half the time, and climate change makes that even more uncertain, the state Department of Water Resources has said.
Read More at news.com.au