Data have been checked by the reporting agency. The advocacy group Restore Hetch Hetchy took its case for Even with the latest precipitation, Folsoms values was unchanged. Meanwhile, the group Restore Hetch Hetchy is urging the SFPUC to abandon Hetch Hetchy Reservoir. Prior to The Chronicle, she worked as a data journalist for Honolulu Civil Beat, a watchdog news organization covering the Hawaiian islands. Updated to include drought zones while tracking water shortage status of your area, plus reservoir levels and a list of restrictions for the Bay Areas largest water districts. The Department of Water Resources, which manages the state's water supply, said in a statement that there are several possible reasons for the difference in inflow amounts between the two reservoirs. thanks. I do not see Diamond Valley Lake Resevoir on this page. 9 of 12 10 of 12 Hetch Hetchy Reservoir with Wapama Falls near Groveland, Calif. on Wednesday March 12, 2014, is currently at fifty percent of capacity. I realize there we dont want to reservoirs overflowing, but why are we still below historical average? Hetch Hetchy Reservoir in Yosemite was 69 percent full on Tuesday, 150 percent of normal for this time of year. pertained to water that was wasted, and there was no claim that The information on Isabella has been fluctuating drastically (by a factor of 10!) Love easy to read and understand information. "It was a very healthy shot in the arm. A diverse mix of sources protects us from potential disruptions due to emergencies or natural disasters, provides resiliency during periods of drought, and helps us ensure a long-term, sustainable water supply as we address issues such as climate uncertainty, regulatory changes and population growth. City officials have touted their efforts to help salmon, for example by timing water releases to assist with migration and restoring breeding grounds. For most of the year it will still be possible to divert the flow of the Tuolumne River into the pipeline just downstream of the National Park boundary. This other page: https . To reach Hetch Hetchy, you have to exit Yosemite National Park and re-enter it. The blue line indicates the reservoirs water level one year ago today. window.addEventListener("orientationchange", function() {
not passed until 1928 five years after the dam was built.
SF's Hetch Hetchy water system is almost full. Is that a good thing? The overall storage is said to have dropped by 57.4 to 56.4 (or 302 kaf). Great work. Thank you so much for the hard work! At the same time, theyve also said its critical to maintain sufficient water supplies to keep Bay Area communities and its economy running during a prolonged drought. What rates am I paying? Read more about the data team and their work. Restore Hetch Hetchys subsequent appeal to the ruling was I know this might be difficult to display but Im very curious on the actual amounts of water consumed on a monthly basis and if this is somehow processed in a certain between what is agricultural and what is non-commercial etc? Thank you for a beautiful job. Thinking more about it. System for more than 60 percent of their drinking water. Lock That includes the Tuolumne River, which provides water via Hetch Hetchy Reservoir to Bay Area customers. Important Legacy real-time page. Data and Tools Greetings from Mount Laurel New Jersey. Waterfalls gushed at Hetch Hetchy after an atmospheric river event in October 2021. A wet December produced ample snowfall, which is still sitting at high elevations. Water data back to 1930 are available online. Hetch Hetchy is one of nine reserviors in a water system that serves San Francisco and other Bay Area communities. The snowpack acts as a natural reservoir and slowly releases water.. After the reservoirs Impounded by O'Shaughnessy Dam, Hetch Hetchy Reservoir water passes through hydroelectric powerhouses before it enters the San Joaquin Pipelines, the Tesla Ultraviolet Treatment Facility, and the Coast Range Tunnel on its journey to the Bay Area. While the rainfall has been bad for many people, I am happy to see Californias reservoirs are benefiting slightly, Amen! The cities of Burlingame, Hayward, Menlo Park, Palo Alto, Redwood City and San Mateo, along with the Alameda County Water District, were among Bay Area communities whose support was influential in persuading Congress to pass the controversial Act, and President Woodrow Wilson to sign it. As the system aged, especially in an era of heightened safety awareness following the Loma Prieta Earthquake in 1989 and drought in the 1990s, it became evident that the system required a complete overhaul.
The height of the row indicates how much water the reservoir could hold. Just in case a large storm hits, that way they dont reach 100% capacity. Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. In Yosemite National Park, the Hetch Hetchy reservoir relies. This is the first state (of 6 I have lived in) that has had water police and restrictions. As of 5pm on 1/18, the data appears correct (~58k acre feet), but an hour ago it was reading off the chart (3X above what they are allowed to store right now). Nice! }
San Francisco Should Pay Yosemite the Dam Rent - perc.org a minimum, according to the San Francisco Public Utilities Is it because the laws have changed on how much each reservoir can hold or is it in anticipation of significantly more rain? Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commissions water system.
LK ELEANOR NR HETCH HETCHY CA - USGS Water Data for the Nation For example, Hetch Hetchy Reservoir in Yosemite National Park provides 85 percent of San Francisco's total water needs. }
Hetchy refers to a valley in the Sierra Nevada and a reservoir that Navigation and Navigable Waters 33.208.82 Hetch Hetchy, Cherry Valley, and Don Pedro Dams and Reservoirs. For the first week of February, there was a slight increase for most reservoirs from January amounts. BAWSCA Board of Directors Meeting, March 16, 2023, 6:30 PM. Great resource! This was helpful to project seasonal trends & storm impacts. For some strange unknown reason, they are not allowing the lake to fill up. Historical average is near unattainable these days. In the year prior to Oroville reaching capacity the interactive chart showed the rate of inflow over time. But I would never have imagined how to put all the important information into a single plot. Yoohyun Jung is the Deputy Data Editor for The San Francisco Chronicle. .
This November, a group of environmental advocates will put forth a ballot measure that would require the San Francisco Public Utilities Commission to develop a plan to drain Hetch Hetchy. In 2007, the Bush California boosts water deliveries to highest level in years, thanks to storms, California reservoir levels: Charts show water supply across the state, Track water shortages and restrictions across Bay Area. I noticed that Folsom does not change whereas every reservoir changes on an hourly update. Hetchy Reservoir can store as much as 117 billion gallons for the "This was rare for October. Love this. Water data back to 1956 are available online. I would think with the rain it would get to historical average and then more outflow would happen. California reservoir levels: . ) or https:// means youve safely connected to the .gov website. Whats going on with the water level at Oroville? "It's an increase of a few percent, . The proportion of blue to brown will show how full it is, while the red line shows the historical level that reservoir is typically at for this date of the water year. Trailhead address: Evergreen Road (Hetch Hetchy Road), Yosemite National Park, CA 95321. In another sign that Californias drought is easing, San Francisco captured more than a years worth of water in just one months time. Horoscope for Friday, 3/03/23 by Christopher Renstrom, No seriously, dont drive up to Tahoe this weekend, Wife of Jeffrey Vandergrift issues somber update, Snowboarder dies at Tahoe ski resort following historic blizzard, Scream publicity stunt floods Bay Area dispatch with 911 calls, The best fried chicken is at a San Francisco strip club, Rain reenters Bay Area forecast: Have an umbrella near you, The Warriors broke Russell Westbrook, just like old times, Mochi muffin bakery closes SF cafe after just 4 months, Arrest in killing of woman seen running through Tahoe campground, Oakland ransomware attackers leak 'confidential' data, California Department of Water Resources website, 14 things you need in your car before you drive to Tahoe. For each of the top 8 reservoirs the storage has increased by a total of 217 kaf, however). She is also an alumna of Reveal from the Center for Investigative Reporting Investigative Fellowship and The New York Times Student Journalism Institute. The windfall of water is welcome news for households and businesses in San Francisco, which use less water on average compared to the rest of the state but nonetheless have faced calls to cut back since 2021 because of water shortages. If you are on a mobile device you can tap the reservoir to get that same info. Is the Stanley Quencher tumbler worth its TikTok hype? They have restoredMono Lake,improved stream flows on the North Coast and in theCentral Valleyand diminished the threat to native fish in the Bay Delta. A 1 week change would be interesting to show on each. Restoring Hetch Hetchy Valley will allow all three power plants to remain operational but will reduce power generation at these by about 20% an average of about 350 million kWh per year. Wife of missing Bay Area radio host says Jeffrey Vandergrift will not Sen. Dianne Feinstein is hospitalized in San Francisco with shingles, California extends deadline to file 2022 income taxes to match IRS decision, Going to Tahoe this weekend? The question was, what constitutes unreasonable method of May 24, 2022 - BAWSCA Statement About the Adoption of a Systemwide Water Use Reduction of 11%. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. Just trying to learn here Thanks so much! The trail includes spectacular views of Tueeulala and Wapama Falls. A .gov website belongs to an official government organization in the The reservoir was at 75 percent capacity as of May 5, totaling 269,963 acre-feet of water (an acre-foot is nearly 326,000 gallons). https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=SHA San Francisco will be in great shape going into 2023, said Spreck Rosekrans, executive director of Restore Hetch Hetchy Its unfortunate that too little is being done with these flows to recharge groundwater basins to help cities and farms and even restoring Hetch Hetchy Valley., Kurtis Alexander is a San Francisco Chronicle staff writer. Is that a good thing? And early forecasts show the rest of the wet season is not likely to produce enough precipitation. Your email address will not be published. Santa Clara, Alameda and San Mateo counties. Upcountry and the Bay Area. required on whether to demolish OShaughnessy Dam.
It could be the 180% of historical average of snowpack, which will be melting in a couple months. Draining Hetch Hetchy without depriving Bay Area residents of I am new to the state. But Sites would be what's called an off-channel . I previously made a bar graph showing the overall level of water in the major California reservoirs. mandate within and maybe another vertical axis to the right of that with reservoir capacity. 2022 All Rights Reserved. has a graph which shows how the historical avg changes throughout the year (oscillating between ~15000 and ~21000). As of Feb. 1, the systems total water storage was just over 1.3 million acre-feet, or about 92% of capacity. At the beginning of this water year, which started on October 1, 2022, the state's largest water reservoir, Lake Shasta, was a third full, at 33 percent. Units are in kaf, thousands of acre feet.
A Map and Guide to Hetch Hetchy Reservoir at Yosemite - TripSavvy dam and restoring the valley. Commission. It has no natural inflow or out flow. This is my first year watching the levels, so maybe Im missing something. Why is Lake Nacimiento and Lake San Antonio not listed?
Interactive California Reservoir Levels Dashboard - Engaging Data Therefore flood control agencies take the more conservative route and order the release of water. Amy Graff is the news editor for SFGATE. Is that from melting snow and rain water coming from the mountains and filling it up? Didnt realize how bad things were there. He frequently writes about water, wildfire, climate and the American West.
Hetch Hetchy Reservoir - O'Shaugnessy Dam - National Park Service Getting There. However, I am interested in how much we are saving. A lock (
Water Quality Updates | Water Resources We own and operate the Hetch Hetchy Regional Water System which serves 2.7 million customers. Thanks for putting this together. You dont see runoff right away, the snow is still up there, frozen, doing what we want it to do, he said. Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. In 2016, a Tuolumne County Superior Court judge dismissed the She was previously an engagement reporter. Lake ShastaLevel before the storm on Oct. 22: 882.57 feetLevel after the storm on Nov. 1: 885.47 feetTotal rise: 2.9 feet, Storage before the storm: 970,859 acre-feetStorage after the storm: 1,001,879 acre-feetTotal storage increase: 31,020 acre-feet, Lake OrovilleLevel before the storm: 630.80 feetLevel after the storm: 661.20 feetTotal rise: 30.4 feet, Storage before the storm: 799,638 acre-feetStorage after the storm: 982,263 acre-feetTotal storage increase: 182,625 acre-feet, Hetch HetchyLevel before the storm: 3,729.68 feetLevel after the storm: 3,750.99 feetTotal rise: 21.31 feet, Storage before the storm: 221,500 acre-feetStorage after the storm: 257,800 acre-feetTotal storage increase: 36,300 acre-feet, Trinity LakeLevel before the storm: 2,209.55 feetLevel after the storm: 2,213.22 feetTotal rise: 3.67 feet, Storage before the storm: 648,675 acre-feetStorage after the storm: 672,930 acre-feetTotal storage increase: 24,255 acre-feet, Folsom LakeLevel before the storm: 370.28 feetLevel after the storm: 390.33 feetTotal rise: 20.05 feet, Storage before the storm: 214,225 acre-feetStorage after the storm: 318,577 acre-feetTotal storage increase: 104,352 acre-feet, New Melones LakeLevel before the storm: 916.28 feetLevel after the storm: 917.09 feetTotal rise: 0.81 feet, Storage before the storm: 822,619 acre-feetStorage after the storm: 827,786 acre-feetTotal storage increase: 5,167 acre-feet, Don PedroLevel before the storm: 723.96 feetLevel after the storm: 727.41 feetTotal rise: 3.45 feet, Storage before the storm: 970,226 acre-feetStorage after the storm: 995,836 acre-feetTotal storage increase: 25,610 acre-feet, McClureLevel before the storm: 663.70 feetLevel after the storm: 672.27 feetTotal rise: 8.4 feet, Storage before the storm: 180,900 acre-feetStorage after the storm: 198,467 acre-feetTotal storage increase: 17,210 acre-feet. proposed as a source of water following the 1906 San Francisco Trinity Lake, with a capacity of 2,447,650 acre-feet, had the smallest increase, from 29% in December to 30% in January.
In addition, San Francisco receives approximately one-tenth of its power from hydroelectricity generated by the gravity-driven flow from the Hetch Hetchy Reservoir. DWR is one of many local, State and Federal entities that dictate water releases. My guess would be that the recent systems have been cold and so they are predominantly dropping snow on the watershed. Maybe bad data.
in 2018.
Sierra Nevada snowpack at 93 percent of normal - The Mercury News