Farmers in the Bay Area were excited that the latest storm brought another round of much-needed rain in the hopes it will bring them closer to the end of what has been a difficult drought.
Many in the agricultural and farming industries of the Santa Clara Valley are relieved the region took in substantial rainfall over the past few days.
California is in the grip of its fourth drought since 2000. To cope with worsening droughts, over the past few decades Californians have made impressive gains in water efficiency. Total water diversions in California for agriculture and cities – roughly 30 million acre feet per year for agriculture and 8 million acre feet per year for cities – have not increased even while California’s population has grown and irrigated farm acreage has increased. But conservation alone cannot guarantee Californians have an adequate supply of water.
To help stave off another round of mandatory cutbacks, water leaders for Arizona, Nevada and California are preparing to sign an agreement that would voluntarily reduce Colorado River water to the lower basin states by 500,000 acre-feet — enough to supply about 750,000 households for a year — for both 2022 and 2023.
The agreement, known as the “500+ Plan”, would require millions of dollars from each state over two years — $60 million from Arizona, $20 million from Nevada and $20 million from California with federal matching dollars — to fund payments for water use reduction and efficiency projects that result in supply savings throughout the lower basin.
The signing is expected to take place Wednesday at the Colorado River Water Users Association annual meeting in Las Vegas, amid urgency to negotiate new rules for managing the depleted river beyond 2026 when the 2007 interim guidelines expire.
The San Diego County Water Authority and the Metropolitan Water District of Southern California have reached an agreement that will provide water to parts of Southern California facing extraordinary supply constraints due to cutbacks on the State Water Project.
Under a deal approved today by Metropolitan’s Board of Directors and previously authorized by the San Diego County Water Authority’s Board of Directors, Metropolitan will secure additional groundwater in 2022 from the Semitropic Water Bank in Kern County.
The San Diego County Water Authority and the Metropolitan Water District of Southern California have reached an agreement that will provide water to parts of Southern California facing extraordinary supply constraints due to cutbacks on the State Water Project.
Under a deal approved today by Metropolitan’s Board of Directors and previously authorized by the San Diego County Water Authority’s Board of Directors, Metropolitan will secure additional groundwater in 2022 from the Semitropic Water Bank in Kern County. Metropolitan can use that water to serve areas in the northwest and northeast parts of its service area that aren’t connected to its Colorado River supplies and are heavily reliant on limited State Water Project supplies.
“Metropolitan is committed to doing everything we can to bring more water to communities in our service area that are particularly challenged by the drought. We’re thrilled to have the Water Authority partner with us in this effort, supporting the well-being of all Southern California,” said Metropolitan board chairwoman Gloria D. Gray. “We’re all in this together. And we all need to do our part, including using water as efficiently as possible.”
Water Authority Board Chair Gary Croucher expressed a similar perspective. “We thank Metropolitan Board Chair Gloria Gray and General Manager Adel Hagekhalil for partnering with us in a way that benefits all of Southern California,” Croucher said. “We expect that this will be the first of many innovative and collaborative solutions with Metropolitan to sustain our collective economy and quality of life.”
Under terms of the agreement, Metropolitan will purchase 4,200 acre-feet of the Water Authority’s reserves in the Semitropic Original Water Bank in 2022 for $893 per acre foot. Metropolitan also will lease an additional 5,000 acre-feet of “take capacity” from the Water Authority’s water bank account.
Take capacity – a function of groundwater pumping and distribution system size – gives Metropolitan the ability to withdraw more of its own groundwater stored in the Semitropic Water Bank. An acre-foot is 326,000 gallons, enough to serve about three typical Southern California homes for a year.
In 2008, the Water Authority secured supplies in the Semitropic Water Bank for the San Diego region in preparation for drought. Due to other supply and storage investments and sustained water conservation in San Diego County, the Water Authority does not need to tap its Semitropic account to meet the region’s projected water demands in 2022, providing an opportunity to make that water available to other parts of the state.
Water years 2020 and 2021 were the driest two-year sequence on record in California. And in August, Lake Oroville – the main reservoir on the State Water Project – reached its lowest point since being filled in the 1970s. Earlier this month, the state announced that if hydrologic conditions don’t improve, State Water Project deliveries next year would be limited to only what is required to ensure the health and safety of residents, and no water would be delivered under the normal allocation system. Access to the Semitropic Water Bank is important because it is strategically located along the California Aqueduct and can supplement the limited state project deliveries.
Much of Southern California can rely on a diverse portfolio of Colorado River water, local supplies and stored reserves, when state project supplies are limited. However, parts of Metropolitan’s service area – including communities in Northern L.A. County, Ventura County and San Bernardino County – cannot receive Colorado River water and are more dependent on state project supplies. Metropolitan has taken important steps to modify its delivery infrastructure to shrink this dependent area.
The agency also continues to promote increased water efficiency across Southern California. Metropolitan’s board declared a Water Supply Alert in August and a Drought Emergency in November, both calling for increased conservation. The board also approved a series of measures to expand rebate and water-efficiency programs. Depending on local conditions, some Metropolitan member agencies have implemented mandatory conservation measures.
(Editor’s Note: The Metropolitan Water District of Southern California is a state-established cooperative that delivers water to 26 member agencies serving 19 million people in six counties. The district imports water from the Colorado River and Northern California to supplement local supplies, and helps develop increased water conservation, recycling, storage and other resource-management programs.
The San Diego County Water Authority sustains a $253 billion regional economy and the quality of life for 3.3 million residents through a multi-decade water supply diversification plan, major infrastructure investments and forward-thinking policies that promote fiscal and environmental responsibility. A public agency created in 1944, the Water Authority delivers wholesale water supplies to 24 retail water providers, including cities, special districts and a military base.)
The San Diego County Water Authority and the Metropolitan Water District of Southern California have reached an agreement that will provide water to parts of Southern California facing extraordinary supply constraints due to cutbacks on the State Water Project.
Under a deal approved today by Metropolitan’s Board of Directors and previously authorized by the San Diego County Water Authority’s Board of Directors, Metropolitan will secure additional groundwater in 2022 from the Semitropic Water Bank in Kern County. Metropolitan can use that water to serve areas in the northwest and northeast parts of its service area that aren’t connected to its Colorado River supplies and are heavily reliant on limited State Water Project supplies.
“Metropolitan is committed to doing everything we can to bring more water to communities in our service area that are particularly challenged by the drought. We’re thrilled to have the Water Authority partner with us in this effort, supporting the well-being of all Southern California,” said Metropolitan board chairwoman Gloria D. Gray. “We’re all in this together. And we all need to do our part, including using water as efficiently as possible.”
Water Authority Board Chair Gary Croucher expressed a similar perspective. “We thank Metropolitan Board Chair Gloria Gray and General Manager Adel Hagekhalil for partnering with us in a way that benefits all of Southern California,” Croucher said. “We expect that this will be the first of many innovative and collaborative solutions with Metropolitan to sustain our collective economy and quality of life.”
Under terms of the agreement, Metropolitan will purchase 4,200 acre-feet of the Water Authority’s reserves in the Semitropic Original Water Bank in 2022 for $893 per acre foot. Metropolitan also will lease an additional 5,000 acre-feet of “take capacity” from the Water Authority’s water bank account.
Take capacity – a function of groundwater pumping and distribution system size – gives Metropolitan the ability to withdraw more of its own groundwater stored in the Semitropic Water Bank. An acre-foot is 326,000 gallons, enough to serve about three typical Southern California homes for a year.
In 2008, the Water Authority secured supplies in the Semitropic Water Bank for the San Diego region in preparation for drought. Due to other supply and storage investments and sustained water conservation in San Diego County, the Water Authority does not need to tap its Semitropic account to meet the region’s projected water demands in 2022, providing an opportunity to make that water available to other parts of the state.
Water years 2020 and 2021 were the driest two-year sequence on record in California. And in August, Lake Oroville – the main reservoir on the State Water Project – reached its lowest point since being filled in the 1970s. Earlier this month, the state announced that if hydrologic conditions don’t improve, State Water Project deliveries next year would be limited to only what is required to ensure the health and safety of residents, and no water would be delivered under the normal allocation system. Access to the Semitropic Water Bank is important because it is strategically located along the California Aqueduct and can supplement the limited state project deliveries.
Much of Southern California can rely on a diverse portfolio of Colorado River water, local supplies and stored reserves, when state project supplies are limited. However, parts of Metropolitan’s service area – including communities in Northern L.A. County, Ventura County and San Bernardino County – cannot receive Colorado River water and are more dependent on state project supplies. Metropolitan has taken important steps to modify its delivery infrastructure to shrink this dependent area.
The agency also continues to promote increased water efficiency across Southern California. Metropolitan’s board declared a Water Supply Alert in August and a Drought Emergency in November, both calling for increased conservation. The board also approved a series of measures to expand rebate and water-efficiency programs. Depending on local conditions, some Metropolitan member agencies have implemented mandatory conservation measures.
The storms pounding California this week are expected to bring an end to a wildfire season that shocked fire crews with its unprecedented, climate-change-driven behavior.
For the first time ever, wildfires burned from one side of the Sierra Nevada to the other, destroying multiple towns including the Gold Rush-era community of Greenville and the mountain hamlet of Grizzly Flats.
Environmental groups claim Utah and two other upper basin states — Colorado and New Mexico — are overusing their share of water from the Colorado River.
The Utah Rivers Council released a report Monday saying the Colorado River’s flows have dropped about 20% since 2000. The report outlines that the hydrology of the river hasn’t stopped the three states from pursuing large water projects.
The Center for Western Weather and Water Extremes at the UCSD/Scripps Institution of Oceanography has updated its popular watershed precipitation forecasts as part of its interactive “Decision Support Tools” page. These forecasts focus on quantifying and illustrating the 10-day precipitation forecasts averaged for the 126 Hydrologic Unit Code 8 (HUC-8) watersheds in California from four numerical weather prediction models. These models include the deterministic and ensemble models of the National Centers for Environmental Prediction Global Forecast System and the European Centre for Medium-Ranged Weather Forecasts model.
The Center for Western Weather and Water Extremes at the UCSD/Scripps Institution of Oceanography has updated its watershed precipitation forecasts. (Graphic: Center for Western Weather and Water Extremes)
Over the last 20 years, the water flow in the Colorado River has declined by roughly 20%. But some states in the river’s basin, including Utah, haven’t adjusted to the dwindling supply.
And if it doesn’t make adjustments, Mexico and other states in the Lower Colorado River Basin could demand the Beehive State scale back its water use.
