After an extended break from storms, a new storm from the Pacific will eye California and much of the Southwest during the middle to latter part of this week. While far from some of the blockbuster storms of this past winter, this storm will bring enough rain and snow to slow travel and hinder outdoor activities.
California’s Central Valley aquifer, the major source of groundwater in the region, suffered permanent loss of capacity during the drought experienced in the area from 2012 to 2015. California has been afflicted by a number of droughts in recent decades, including one between 2007 and 2009, and the millennium drought that plagued the state from 2012 to 2015. Due to lack of water resources, the state drew heavily on its underground aquifer reserves during these periods.
In California’s Central Valley, 100 miles east of San Francisco, the San Joaquin and Tuolumne rivers meet. Their waters mingle amid a wide flat plain of shrubs, cottonwood and oak trees. The Dos Rios Ranch Preserve, 1,600 acres of wetlands, river habitat and rolling hills, sits at the site of this juncture. On clear days, the Sierra Nevada rises in the east and the Coast Range to the west.
Over the past 20 years, Americans have been twice as likely to sweat through record-breaking heat rather than shiver through record-setting cold, a new Associated Press data analysis shows. The AP looked at 424 weather stations throughout the Lower 48 states that had consistent temperature records since 1920 and counted how many times daily hot temperature records were tied or broken and how many daily cold records were set. In a stable climate, the numbers should be roughly equal.
For people who closely follow California water, here are headlines in the paper or tweets in your feed that you never see about water operations in the Sacramento-San Joaquin Delta: “Pumping curtailed during next storm due to nearby migrating salmon” Or: “Storm opens water supply window as few fish conflicts detected” Why? Our rules, cobbled over time from various state water right decisions or federal biological opinions, are too rigid. Pumping rules in the Delta on Nov. 30, for example, are very different than those 24 hours later, regardless of the weather.
The Water News Network is San Diego County’s source for water news and information.
