hetch hetchy reservoir level percentage hetch hetchy reservoir level percentage

And the current water storage amounts are well below the historical averages for this time of year. Folsom Lake is letting the water flow out. The cities, water districts and private utilities represented by the Bay Area Water Supply and Conservation Agency (BAWSCA) rely upon the Hetch Hetchy system for water to protect the health, safety and economic well being of 1.8 million citizens, businesses and community organizations. At this facility, which is shared with other water agencies, the city can stash water for credits against future draws on the river. Saved to my favorites now. Fish and Wildlife Service that provides an immediate $4 million investment for habitat improvements for fisheries in the Tuolumne River. YTD values are from January 1 . One of the most impressive was Hetch Hetchy, which provides drinking water to 2.6 million people in San Francisco and other Bay Area communities. I will take a look and see if there are other important reservoirs missing and may add them in the future. Commission. Shasta is very large and could hold about 3.5 cubic kilometers of water at full (but not flood) capacity. pertained to water that was wasted, and there was no claim that Good info to know. The extensive amount of storage, which is designed to benefit the Bay Area as droughts become more severe with climate change, has become a sticking point in a longstanding environmental battle over how much water the city should be taking from rivers. This file photo shows Shasta Lake. 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. Hetch Hetchy is Monitoring location 11275500. I dont think its currently above the historical average, not below 1 year ago. Usually with warm ARs, you get a dramatic increase in inflow, which can fill even very large reservoirs relatively quickly, like Oroville in 2017. Share sensitive information only on official, secure websites. Ive added it to my bookmarks for quick reference. Exclusive: Stunning photos show Yosemite National Park under 15 feet of Warriors treating Andrew Wiggins with understandable patience, but his California snowpack hits highest level this century for March, could Map shows which parts of California exceeded entire years worth of rain, Map shows stunning improvement in California drought, Last chance to see: Bay Bridge lights turn off on Sunday. Top ways to experience Hetch Hetchy Reservoir and nearby attractions Yosemite: Audio Driving Tour 1 Full-day Tours from $9.99 per group (up to 8) Private Yosemite Explorer Package | 3 Days of Adventure 3 Private and Luxury from $750.00 per adult (price varies by group size) Private Family Photo Day in Yosemite 78 Recommended Full-day Tours from One gauge in the area has measured 6.12 inches since Oct. 1, which is 899% of normal. The water transmission system in the Bay Area and Peninsula includes the Bay Division, San Andreas, Sunset Supply, and Crystal Springs pipelines. Yes, and why is Twitchell Dam also not listed? Maintaining this variety of sources is an important component of our near and long-term water supply management strategy. Thats a great suggestion and one that would be particularly helpful! Lake Shasta, the state's largest reservoir, rose 2.9 feet and added 31,020 acre-feet of water. Kurtis Alexander is an enterprise reporter for The San Francisco Chronicle, with a focus on natural resources and the environment. Next feature request: wire in aquifer level data! I find myself coming back to this every few days to check on our water . Before returning to the Bay Area, she held roles as transportation reporter and trending news reporter at the IndyStar in Indianapolis. Last week, I paid a visit to Hetch Hetchy. O'Shaughnessy Dam is a 430-foot (131 m) high concrete arch-gravity dam in Tuolumne County, California, United States.It impounds the Tuolumne River, forming the Hetch Hetchy Reservoir at the lower end of Hetch Hetchy Valley in Yosemite National Park, about 160 miles (260 km) east of San Francisco. mandate within Interesting. 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. maybe label the vertical axis with aggregate total or system total capacity. From the main road, it's about a 20- to 25-minute drive to the parking area. The water is delivered by a gravity-based system and aqueduct to For the higher elevations, more of their water comes directly from snowmelt. http://www.tuolumnerivermanagementplan.com. But the growing water reserves dont please everyone. Hetch Hetchy Water System The system originates more than 100 miles from its primary customers, in Yosemite National Park. Very nice work. Monitoring location 11277200 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. diversion of water? Restore Hetch Hetchy claimed the phrase had In addition, San Francisco receives approximately one-tenth of its power from hydroelectricity generated by the gravity-driven flow from the Hetch Hetchy Reservoir. Excellent graphic! SFGATE took a look at reservoir levels three days after the Oct. 24 storm and below we take another look, examining water level rises and storage increases at a broader range of reservoirs roughly a week after the atmospheric river event. Folsom is like an overflow tank. Additionally, the bounty helps the more than two dozen communities in Alameda, San Mateo and Santa Clara counties that get their water from the city. After record snowfall in December was followed by a dry January, there are renewed concerns of drought. I wonder why it doesnt work for you. The Bay Area portion of the System includes water collection, treatment, and transmission facilities from the Alameda East Portal to the wholesale service area and terminal reservoirs in San Francisco. She is a University of Washington graduate. The OShaughnessy Dam, which was completed in 1938 and is 430-feet tall, impounds water in Hetch Hetchy Reservoir for communities in the Bay Area. Data have been checked by the reporting agency. A question: the Historical Avg*, is it the value of year-today or natural year? I noticed that Folsom does not change whereas every reservoir changes on an hourly update. I see many of the local canals flowing with lots of water. Stay up-to-date with breaking news and upcoming events. This was helpful to project seasonal trends & storm impacts. San Francisco maintained the phrase only She is also an alumna of Reveal from the Center for Investigative Reporting Investigative Fellowship and The New York Times Student Journalism Institute. Its water supply Hetch Hetchy Reservoir, in the Sierra Nevada is 80% full, . Could you also do the same for the Colorado River reservoirs to see how they are fairing? environmental context. Even with the latest precipitation, Folsoms values was unchanged. There are many very small reservoirs (relative to Shasta) so the bars will be very thin to the point where they are barely a sliver or may not even show up. has a graph which shows how the historical avg changes throughout the year (oscillating between ~15000 and ~21000). Eighty-five percent of the water comes from Sierra Nevada snowmelt stored in the Hetch Hetchy reservoir situated on the Tuolumne River in Yosemite National Park. Yep. There are no alerts at this time. The new 68-mile (109 km) railroad wound its way up the narrow canyon of the Tuolumne River past sharp curves and up steep 4% grades. Much of the water passing through Holm would be diverted into the Mountain Tunnel and be used to generate power a second time at the Moccasin powerhouse. According to the San Francisco Public Utilities Commission, Hetch Hetchy Reservoir can store as much as 117 billion gallons for the Hetch Hetchy Regional Water System, which serves San Francisco, Santa Clara, Alameda and San Mateo counties. I second that request. Located in the northwest portion of Yosemite National Park, Hetch The Bay Area transmission system also includes Irvington Tunnel 1 and Tunnel 2, the Bay Tunnel, and the Crystal Springs Bypass Tunnel. . Awesome work!! The San Francisco Public Utilities Commission is involved in on-going negotiations with the State on a voluntary agreement for implementation of the Bay-Delta Plan, which calls for large increases in water releases on the tributaries to the San Joaquin River, a major tributary to the Bay-Delta. Impounded by OShaughnessy 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. All rights reserved. Great visualization Chris! The Hetch Hetchy Reservoir in Yosemite National Park can store up to 117 billion gallons of drinking water that is used for the Hetch Hetchy Regional Water System that provides water for 2.6 . Thanks for developing it, and for sharing it with the rest of us! Wapama Falls (moderate) 5 mi (8 km) round-trip; 2 hours. An official website of the United States government. For each of the top 8 reservoirs the storage has increased by a total of 217 kaf, however). What happened to the Hetch Hetchy level? River. While constructed and owned by San Francisco, the water system was in fact planned to benefit the greater San Francisco Bay Area population. If you click on the list button in the top right of the dashboard, it will show a list of the reservoirs (in order of size from largest to smallest) and you can check which ones you would like to display. I would turn this graph, 90 counterclockwise, and start the capacity along the bottom axis from left to right, with the biggest reservoirs on the left and the smaller ones on the right. Upcountry and the Bay Area. Its great seeing all the reservoirs in California at or near historical averages. Required fields are marked *. Delivery rates are 7-day average values. Hetch Hetchy water travels 160 miles via gravity from Yosemite to the San Francisco Bay Area. Generation at Holm powerhouse below Cherry Lake would be less affected. Hoping they start building more reservoirs soon. The gain came after weather gauges in the area recorded more than 5 inches from one storm. 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. For perspective, water demand across the SFPUCs service area of 2.7 million people was about 205,000 acre-feet last fiscal year. BAWSCA agencies advocated for the capital improvement program that was adopted by the SFPUC in 2002, and are actively monitoring its implementation. Data and Tools The adopted Plan addresses water quality issues affecting the ecosystem and fisheries of the Bay-Delta system. For detailed analysis of how San Franciscos water system will operate without Hetch Hetchy reservoir, see the Environmental Defense Funds studiesParadise RegainedandCherry Intertie Alternative. Therefore flood control agencies take the more conservative route and order the release of water. A truly excellent project. Absolutely zero reason to be releasing this much water from these reservoirs. For example, Hetch Hetchy Reservoir in Yosemite National Park provides 85 percent of San Francisco's total water needs. Water data back to 1930 are available online. 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, Here's where California reservoir levels stand after this week's rains, Going to Tahoe this weekend? Echoing the sentiments of famed naturalist John Muir, members say the glacially-carved Hetch Hetchy Valley that the reservoir sits in is comparable in grandeur to Yosemite Valley and should not be flooded. document.getElementById('globes').contentWindow.location.reload(); Copyright Barry Rokeach, 2014. He frequently writes about water, wildfire, climate and the American West. I do not see Diamond Valley Lake Resevoir on this page. 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. One acre-foot is the equivalent of one acre of land covered in one foot of water. Congress had to approve the project because it was The Hetch Hetchy reservoir, which supplies water for San Francisco and other parts of the Bay Area, was at 77% of its 360,000-acre-feet storage capacity in January compared to 73% in December, and on Feb. 7, it was up to 82%. I was thinking that it would be interesting to compare inflows and outflows. and its snowmelt-fed water supply, water from Hetch Hetchy Are they releasing water to relieve the pressure in anticipation of more water? Steve Ritchie, the San Francisco Public Utilities Commission's assistant general manager for water, said the additional water amounted to roughly 11% of the reservoir's total capacity. Santa Clara, Alameda and San Mateo counties. located in a national park and it passed the Raker Act in 1913 to Could the reason be that the water from Lake Alma or seems to be used for energy generation, and that there does not seem to be any agricultural or urban use? You can sort the mekko graph by size largest at the top to smallest at the bottom or by reservoir location, from north to south. the Bay Area. The tremendous inflow to city reservoirs during the recent storms, mostly in and around Yosemite National Park, has lifted San Franciscos total water storage to near capacity. There doesnt seem to be any site that shows the impact of each storm. March 12 - The Perks of California Native Wildflowers, March 28 - Rainwater Harvesting and Rain Gardens, April 01 - Lawn Conversion to Native and Drought-Tolerant Plants. If you are experiencing a water, power, or sewer emergency or service problem call our 24-hour hotline at 3-1-1 or (415) 701-2311 from outside SF or log on at, Public Notices and Public Meeting Notices, Customer Assistance Program - Water/Wastewater, Customer Assistance Program - Hetch Hetchy Power, Hetch Hetchy Power Medical Necessity Assitance Program, Hot Water Recirculation Pump Rebate Program, San Francisco's Urban Watersheds Overview, Free Phone Consultations, Evaluations and Devices, Games Puzzles Virtual Backgrounds Overview, Get your Free 2023 Pollution Prevention Calendar, Construction & Contracts Overview Overview, Contract Opportunities and Payments Overview, Project Review and Land Use - Hetch Hetchy Water and Power, Project Review and Land Use - San Francisco, Sewer System Improvement Program Overview, Water Infrastructure Improvements Overview, Boards, Commissions and Committees Overview, Internships, Apprenticeships and Youth Employment, Public Notices and Public Meeting Notices Overview, Audited Financial Statements & Annual Comprehensive Financial Reports, SFPUC Preliminary Public Power Options Report, Civic Center Sustainable Utilities District Plan, Resolution Condemning Systemic Racism & Taking Action to Promote Racial Justice. San Francisco operates three medium-sized hydro-electric power plants in the Tuolumne River watershed Kirkwood, Moccasin, and Holm. Water data back to 1956 are available online. This is of particular interest as the self-imposed restrictions deadline is approaching and the federal government may have to step in and mandate restrictions across the 7 states, including California. their water supply would cost hundreds of millions of dollars at Great URL. It used to be full (and beyond). Save my name, email, and website in this browser for the next time I comment. Exclusive: Stunning photos show Yosemite National Park under 15 feet of Warriors treating Andrew Wiggins with understandable patience, but his California snowpack hits highest level this century for March, could Map shows which parts of California exceeded entire years worth of rain, Map shows stunning improvement in California drought, Last chance to see: Bay Bridge lights turn off on Sunday. CHERRY LK NR HETCH HETCHY CA Important Legacy real-time page Monitoring location 11277200 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. Since June 2011, the Water Enterprise has operated the Citys Emergency Firefighting Water System (EFWS, formerly known as the Auxiliary Water Supply System (AWSS)), an independent, high-pressure water supply system for fire suppression. I believe the spillway was designed by the State. Secure .gov websites use HTTPS Its currently listed on this page as 29kaf full, but the usgs.gov page below says Hetch Hetchy is at 299.7kaf full. System for more than 60 percent of their drinking water. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. Although Hetch Hetchy Reservoir is the most well-known, it stores less than 25% of the system's water. 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? With modest additional investments San Francisco will be able to maintain an uninterrupted supply of high quality Tuolumne River water. United States. The maximum that the city has put away is 570,000 acre-feet of water. Begin at O'Shaughnessy Dam. Privacy Policy | 2011-2021 San Francisco Public Utilities Commission. Its not possible to see or really interact with the tiniest slivers. Water is rapidly flowing into the state's reservoirs. LK ELEANOR NR HETCH HETCHY CA. The SFPUC has voiced concerns with the Plan, as it would dramatically reduce the agencys water supply, leaving it subject to significant rationing in droughts and more extreme weather conditions brought on by climate change. Voters rejected a 2012 provides water to 2.7 million residents and businesses in the San The Bay Area's main reservoir is up 21 feet. No it is correct. Why is Lake Nacimiento and Lake San Antonio not listed? currently, there is a lot more water coming in than going out. Ronald Reagan and George W. Bush. BAWSCA agencies also are implementing water conservation and water recycling projects to help preserve this precious resource for their communities, and are working to identify alternate sources of water supply. Park visitors walk across OShaughnessy Dam in Yosemite National Park on Sept. 1. Lots of possibilities, just curious. I would like to make one small suggestion:. Arg. GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System. not passed until 1928 five years after the dam was built. San Franciscos Hetch Hetchy water system is almost full for the first time in years. All rights Theyve also seen drought surcharges on their water bills. San Franciscos water-bank in Don Pedro Reservoir, downstream on the Tuolumne River, holds twice as much water as Hetch Hetchy. The remaining 15 percent of water comes from runoff in the Alameda and Peninsula watersheds. UPDATE: Here's where California reservoir levels stand after this week's rains. She was born and raised in the Bay Area and got her start in news at the Daily Californian newspaper at UC Berkeley where she majored in English literature. Copyright 2023Water Education Foundation. United States. Weve been at zero now for several weeks, and we really want to see that turn around., Kellie Hwang and Yoohyun Jung are San Francisco Chronicle staff writers. Email: kellie.hwang@sfchronicle.com, Yoohyun.Jung@sfchronicle.com Twitter: @KellieHwang, @yoohyun_jung. These sources are diverse in both the origin of the supply snowmelt, rainfall and recharge of groundwater and their location within our system. Its essential to understand that the dispute over San Franciscos use of Hetch Hetchy is not about the use of water only how it is stored. If we reach 100% after the current rains and then it stops raining for the season, then our percentage will start going down. the Hetch Hetchy Valley to its natural state. Love this. Its water supply Hetch Hetchy Reservoir, in the Sierra Nevada is 80% full, the ground is saturated and near-record rainfall has occurred in recent days. Together, the BAWSCA agencies account for two-thirds of water consumption from the system and pay for two-thirds of its upkeep. And more work is underway. Its fluctuating between ~107% and ~20% from one hour to the next (reading 107.6 atm). ) or https:// means youve safely connected to the .gov website. Winter weather conditions may cause road closures. Congressman Tom McClintock has re-introduced theYosemite National Park Equal Access and Fairness Act, a bill that would allow non-motorized Sign up to receive blog posts and other news by email. This is the best one out there. supplies water to the San Francisco Bay Area. She has been with SFGATE for more than 10 years. The upcountry portion of the System begins with Hetch Hetchy Reservoir in Yosemite National Park. The Hetch Hetchy reservoir, which supplies water for San Francisco and other parts of the Bay Area, was at 77% of its 360,000-acre-feet storage capacity in January compared to 73% in. How do I pay my bill? Article X, Section 2 that requires diversions for all water California reservoir levels: . During late summer and early fall, it will be necessary to move stored supplies from Cherry or Don Pedro Reservoirs into the pipeline. What rates am I paying? This local water is captured in reservoirs located in San Mateo and Alameda counties. These sources include surface water stored in reservoirs located in the Sierra Nevada, Alameda County and San Mateo County, and groundwater supplies stored in a deep aquifer located in San Francisco and San Mateo counties. Wonderful site. This other page: https . https://engaging-data.com/ca-reservoir-level/ San Francisco voters have demonstrated their opposition to How do I contact support? The Hetch Hetchy Reservoir that supplies San Francisco, seen here in February, is among those that have refilled after two months of storms. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. The snowpack there, which will eventually melt and flow into reservoirs, is already bigger than the average peak snowpack, which typically comes around April 1. After the reservoirs This is an excellent tool you have put together. Partly because of low water, the rivers chinook salmon runs have plummeted from tens of thousands of fish annually a few decades ago to fewer than 1,000 in recent years. Hetch Hetchy Regional Water System, which serves San Francisco, Read more about the data team and their work. Thank you! a minimum, according to the San Francisco Public Utilities Thanks. Our drinking water comes from a variety of protected sources carefully managed by the SFPUC. The SFPUC has consistently stated that voluntary agreements are the best path forward for the Bay-Delta, as the voluntary agreement strikes the right balance between environmental stewardship and water reliability. The group says the recent plethora of water shows that the city could do without Hetch Hetchy Reservoir, by using other storage facilities that have filled and pursuing new projects to capture the surplus. hetch hetchy reservoir level percentage Rivers and Streams Streams draining into the Peninsula Watershed within the project area are relatively small, steep, and in a 2021-11-17. 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. "It's an increase of a few percent, . Its supposed to be brown. The half-hour drive to Hetch Hetchy from CA Highway 120 begins outside the park boundaries.