Category Archives: Water Shortages

The California Central Valley Project and State Water Project: The Same Drought but Different Outcomes for 2015 Water Deliveries

There is no doubt that California faces continued challenges as we enter into the fourth year of severe drought conditions. The pundits, however, disagree with the severity of the water supply crunch in the state.  Last week, two prominent California water experts gave two different opinions on how severe the water crisis in California really is. Jay Famiglietti, professor of Earth System Science and Civil and Environmental Engineering at the University of California, Irvine made a dire prediction that California has one more year of water left in our reservoirs if drought conditions do not change. He recommends immediate water rationing across the state, urging everyone to pitch in and conserve water. In contrast, Jay Lund, Professor of Environmental and Civil Engineering at UC Davis sounded a more sanguine tone. While he agreed that our snowpack in particular was at alarmingly low levels, he did not agree that California will be at the end of its rope if conditions don’t get better in a year. He said, “It’s not the right impression that one more year of this and we’re toast. There’s quite a bit more left in groundwater – a bit less every year because we’re pumping, trying to make up for the drought.” Continue reading

Climate Change: A New Energy-Water Nexus for Emission Trading

California Senate President Pro Tempore Kevin de Leon added a new twist (climate change) to the increasingly popular topic of the “energy-water nexus.” Speaking at the 30th Annual Meeting and Dinner of the Southern California Water Committee, “as we live through the current severe and extreme drought, which is now approaching a 4th straight year of drought conditions, the realities of limited water supplies are hitting home.”  Introducing climate change into the policy discussion, Senator de Leon will move water agencies into a new era of carbon emission control.  Will participation in California’s cap-and-trade emission market become a new tool for water managers? Continue reading

Is the End of the Texas Drought Near?

Do you believe an Aggie or a Red Raider?

The Los Angeles Times recently ran a story on the September torrential rainfall in Texas: Rain pounds Texas: A sign the drought is ending?

“This could be the start of the end of the drought,” said state climatologist John Nielsen-Gammon, a professor of atmospheric sciences at Texas A&M University.

“We’ve been behind on rainfall for several years in West Texas. We have thirsty watersheds.” “We need multiple, wetter years,” said Ken Rainwater, former director of the Water Resources Center at Texas Tech University.

Well, this is one Aggie-Red Raider dispute that can’t be settled on the gridiron. Continue reading

Listen to the Tree Rings on Sacramento River Hydrology

With a third and extreme year of drought, how will future hydrologic conditions compare to current ones? There are two strands of thought suggesting a challenging future:

  • the 20th Century was an unusually wet period
  • climate change will confront water managers with more severe drought conditions in the future

For the Sacramento River watershed in California, there is unexpected good news. While California must confront variability in hydrologic conditions, Department of Water Resources’ recently released tree-ring data suggesting that current severe drought conditions do not signal that California will be facing more severe hydrologic conditions in the future. Continue reading