hetch hetchy reservoir level percentage hetch hetchy reservoir level percentage

The remaining 15 percent of water comes from runoff in the Alameda and Peninsula watersheds. After the reservoirs I havent spent much time looking at it but that data is on the CDEC website. Omar, Thanks! Could you also show each reservoirs level as a function of time? BAWSCA Board of Directors Meeting, March 16, 2023, 6:30 PM. 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 city wastes water, so it was a moot issue. Santa Clara, Alameda and San Mateo counties. The dam and reservoir are the source for the Hetch Hetchy Aqueduct, which provides water for over . setTimeout(function (){ It allowed the water over the spillway to move too fast creating a vacuum between the water and the concrete that pulled the concrete sections out of the spillway. Construction of the regional water system proceeded over the following 20 years, with water first delivered in 1934. Good info to know. Hetch Hetchy is Monitoring location 11275500. Monitoring location 11277500 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commissions water system. San Franciscos Hetch Hetchy water system is almost full for the first time in years. But I would never have imagined how to put all the important information into a single plot. The north (side of the reservoir) usually has two waterfalls going at the best of times, but youll see up and down the canyon walls, if you look close, you count there are about 12 waterfalls running now, said Steve Ritchie, the SFPUCs assistant general manager of water enterprise, during a recent drought report to the agencys governing board. The average for this time of year is approximately 4,659.57ft, plus or minus 39ft. But it has flooded nine miles of a glacier-carved valley and blocks access to the Grand Canyon of the Tuolumne and other nearby areas. She joined the Chronicle as a data reporter in 2021. During late summer and early fall, it will be necessary to move stored supplies from Cherry or Don Pedro Reservoirs into the pipeline. 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. One gauge in the area has measured 6.12 inches since Oct. 1, which is 899% of normal. All rights reserved. This is a very clear graph and I cannot imagine the hours you have put in while setting it up and doing the maintenance. I live in the central valley. maybe label the vertical axis with aggregate total or system total capacity. 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. Hetch Hetchy is the only reservoir above its average storage of 63%, and is 82% full. River. I noticed that Folsom does not change whereas every reservoir changes on an hourly update. The valley is Voters rejected a 2012 A separate vote would have been Heres an example of that data for Shasta, where you can see the daily inflows and outflows: Folsom is like an overflow tank. Hetch Hetchy water travels 160 miles via gravity from Yosemite to the San Francisco Bay Area. 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. Great graphs and very useful. That puts it at 84 percent of where it would usually be usually at this time of year. . If you are on a computer, you can hover your cursor over a reservoir and the dashboard at the top will provide information about that individual reservoir. Not only does it supply 85 percent of the water for 2.6 million people in San Francisco, controlled releases via the O'Shaughnessy Dam are helping preserve downstream specieseven in dry . Department of Water Resources is just another in a long line of completely mismanaged California entities. I would like to make one small suggestion:. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. The regional water system provides water to 2.4 million people in San Francisco, Santa Clara, Alameda and San Mateo counties. Secure .gov websites use HTTPS 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. the Hetch Hetchy Valley to its natural state. The water travels through a series of pipelines before it reaches the Bay Area and blends with five local reservoirs. She is also an alumna of Reveal from the Center for Investigative Reporting Investigative Fellowship and The New York Times Student Journalism Institute. As it is, at first glance, it looks like shasta is at the top because its 28000 instead of 4552. very nice product overall. As of Feb. 1, the systems total water storage was just over 1.3 million acre-feet, or about 92% of capacity. Only improvement I would suggest is an improvement of the display of the smaller reservoirs so the names are readable. Crystal Springs Reservoir, along Highway 280 in San Mateo County, was 89 percent . Thanks for providing it for public information. This other page: Californias snowpack slips below average after dismally dry January, renewing concerns about drought, Busting water limits wont cost you in Marin County: Penalties canceled as rain fills reservoirs, California snowpack hits highest level this century for March. Lake Oroville. San Franciscos water-bank in Don Pedro Reservoir, downstream on the Tuolumne River, holds twice as much water as Hetch Hetchy. A .gov website belongs to an official government organization in the The Hetch Hetchy Reservoir in Yosemite delivers water to 2.6 million Bay Area residents every day. Kellie has held many leadership roles for the Asian American Journalists Association, including most recently a board member for the San Francisco chapter. What happened to the Hetch Hetchy level? This is the best one out there. There is something strange about the data over the last two days (Jan.17 to Jan. 19): By a large measure, damming and flooding Hetch Hetchy is the most significant damage ever allowed in any of our national parks. The state's second-largest reservoir, Lake Oroville in Butte County, saw especially dramatic gains with a 30.4-foot rise in the water level and a 182,625-acre-foot increase in the total amount of water, data posted Tuesday from the California Department of Water Resources showed. At the height of the recent drought, they still had at least four years in storage. And for the years they were hoarding water, the salmon-based ecosystem suffered.. Francisco Public Utilities Commissions 26 wholesale customers Nate, thanks for the insight. It didnt end the drought, but it was definitely really good," said Ritchie. Begin at O'Shaughnessy Dam. If you are on a mobile device you can tap the reservoir to get that same info. 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. reloadiframes(); 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. The maximum that the city has put away is 570,000 acre-feet of water. Why is Lake Nacimiento and Lake San Antonio not listed? Love easy to read and understand information. Reservoir levels rising. 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. The amount stored is increasing, just not by a lot. Hetch-Hetchy predicted to fill by end of the snowmelt period 2020-2021 Winter season continues to be dry 2019-2020 was dry, although key differences Feb. 2020 was unusually warm, which impacted snowfall levels and water demands; Feb 2021 was cooler, and hence snowfall level higher and water use lower If we reach 100% after the current rains and then it stops raining for the season, then our percentage will start going down. 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. Lake Shasta and Mendocino are also well below average. Born in Seoul, Yoohyun began her career in Arizona, where she worked for two of the state's largest newspapers covering various beats, including criminal justice and education. Northern California's reservoir levels continued to rise in the week after an atmospheric river slammed the state with torrential rain and high winds. Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commission's water system. Francisco Bay Area. Reservoir behind OShaughnessy Dam does not require filtration. scenic mountain valley in a national park. Heres where California reservoir levels stand after this weeks rains. LK ELEANOR NR HETCH HETCHY CA. For perspective, water demand across the SFPUC's service area of 2.7 million people was about 205,000 acre-feet last fiscal year. So my question is, How do we know if we are saving the water for later release (late summer) or are we releasing it to the ocean? I live close to Eastman Lake. 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). Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. For some strange unknown reason, they are not allowing the lake to fill up. Local reservoir inflows have negative daily flow rates set to zero. Why isnt Lake Sonoma included? I dont think its currently above the historical average, not below 1 year ago. 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. Delivering approximately 260 million gallons of water per day, the regional system consists of over 280 miles of pipelines, over 60 miles of tunnels, 11 reservoirs, five pump stations and two water treatment plants. What rates am I paying? McClintock bill proposes to improve public access at Hetch Hetchy. }, false); Lake Tahoe really isnt part of California water, as the outflow goes to Nevada. Thats enough to supply the citys service area for perhaps seven years. The soaking was welcome in a drought-plagued state with a diminishing water supply. The trail includes spectacular views of Tueeulala and Wapama Falls. "It's an increase of a few percent, . Copyright 2023Water Education Foundation. Locked padlock Wapama Falls (moderate) 5 mi (8 km) round-trip; 2 hours. Read more about the data team and their work. administration attempted to allocate funds to study removing the Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NAVD 1988, LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929, and RESERVOIR STORAGE are available. One of the big challenges in water management is controling the release. dam and restoring the valley. FYI it looks like Isabella is reading incorrectly, likely because its well above 100%. It would be really interesting to visualize whether were able to replenish ground water this year after all the precipitation. however, Ill update the code to include it soon. 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. San Francisco and the thousands of suburban . 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. A dry January with little rainfall across much of Northern California actually didnt hurt the states water storage levels, according to data from the California Department of Water Resources. Hoping they start building more reservoirs soon. Shasta is very large and could hold about 3.5 cubic kilometers of water at full (but not flood) capacity. Water storage facilities include watersheds, dams, and reservoirs including: Calaveras, San Antonio, Crystal Springs, Pilarcitos, and San Andreas. Navigation and Navigable Waters 33.208.82 Hetch Hetchy, Cherry Valley, and Don Pedro Dams and Reservoirs. Could you also do the same for the Colorado River reservoirs to see how they are fairing? drained by the Tuolumne A .gov website belongs to an official government organization in the 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. Is that from melting snow and rain water coming from the mountains and filling it up? She has been with SFGATE for more than 10 years. While it may seem that Decembers production could get us through the rest of the season, Rizzardo explains that in hydrology, you need consistent water shed to keep soils happy. He fears that without more precipitation this season, well enter our third very dry year. But the growing water reserves dont please everyone. This local water is captured in reservoirs located in San Mateo and Alameda counties. For the higher elevations, more of their water comes directly from snowmelt. The Mokolumne River, which originates in the high Sierra, provides more than 90 percent of the East Bay's water and the Owens Valley in the eastern Sierra serves as a key source of water for Los Angeles. Previously, Kellie covered dining news and trends, visual arts, events and nightlife for the Arizona Republic, and freelanced for the former Contra Costa Times. Maintaining this variety of sources is an important component of our near and long-term water supply management strategy. Waterfalls gushed at Hetch Hetchy after an atmospheric river event in October 2021. This dashboard is great! But tearing down O'Shaughnessy Dam in order to restore Hetch Hetchy Valley would be a disaster. ) or https:// means youve safely connected to the .gov website. Water is such a fascinating topic and Id hate to have to be a water manager making a decision on how much to release to avoid reservoir flooding. They placed a few dissipators just before the river. Instructions: Secure .gov websites use HTTPS An official website of the United States government. All of this work is nothing short of brilliant. We provide water directly to customers in San Francisco and wholesale through 26 Water agencies in Alameda, Santa Clara, and San Mateo counties. Thats just another very strong indication visually that its a big water year.. I hear from the farmers that we waste 80% of the water by flushing it into the ocean. I also hear the environmentalists say, the streams and wildlife need water, so flush it into the ocean. Its an interesting dilemma. I recently joined the team with Restore Hetch Hetchy as Engagement & Development Director. Restore Hetch Hetchys subsequent appeal to the ruling was 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. Emissions must be offset by dedicated conservation programs or renewable energy generation such as wind or solar. These sources are diverse in both the origin of the supply snowmelt, rainfall and recharge of groundwater and their location within our system. In 2007, the Bush Great visualization Chris! The name Hetch Hetchy is derived from a Sierra Miwok Great URL. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. California reservoir levels: . While the rainfall has been bad for many people, I am happy to see Californias reservoirs are benefiting slightly, Amen! San Francisco maintained the phrase only Water data back to 1930 are available online. Before joining the Chronicle, Alexander worked as a freelance writer and as a staff reporter for several media organizations, including The Fresno Bee and Bay Area News Group, writing about government, politics and the environment. Theyve also seen drought surcharges on their water bills. Wonderful site. It seems likely one of those two readings is wrong. Another not monitored by the State? the map graph doesnt include berryessa. best to drain the valley. 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. Data and Tools For example, Hetch Hetchy Reservoir in Yosemite National Park provides 85 percent of San Francisco's total water needs. But they'll cost you, Fight at high school basketball game in S.F.