Trailhead address: Evergreen Road (Hetch Hetchy Road), Yosemite National Park, CA 95321. Call 209-372-0200 for the latest road and weather conditions, Hetch Hetchy Road Daily Hours: 8 am to 5 pm Im curious why the percentage of capacity has stayed almost flat for the past 6 weeks or so and below historical average. It takes a fair amount of work to make graphs compared to other more plug-and-play libraries but its very customizable, which is a plus. Reservoir behind OShaughnessy Dam does not require filtration. the city wastes water, so it was a moot issue. It certainly looks dry at least until the last week in February, he said. For example, the average storage level for Feb. 7 is usually 65% of capacity for Trinity Dam, but currently its at 31%.
Yep. Although Hetch Hetchy Reservoir is the most well-known, it stores less than 25% of the system's water. Navigation and Navigable Waters 33.208.82 Hetch Hetchy, Cherry Valley, and Don Pedro Dams and Reservoirs. In whats known as the Bay-Delta Plan, state water regulators are amid a years-long effort to negotiate a policy for how much water should be kept in rivers that flow to the Sacramento-San Joaquin River Delta to meet the needs of both people and wildlife. San Francisco operates three medium-sized hydro-electric power plants in the Tuolumne River watershed Kirkwood, Moccasin, and Holm. Restore Hetch Hetchy intends to undo this Great American mistake, and return the valley to Yosemite National Park and all people. Take CA Highway 120 from the park toward Groveland. Department of Water Resources is just another in a long line of completely mismanaged California entities. The commission plans to decide Nov. 23 whether to formally ask customers to conserve water. Upcountry and the Bay Area. Hetch Hetchy Regional Water System The Hetch Hetchy watershed, an area located in Yosemite National Park, is the major source of water for all of San Francisco's water needs.
Long-term values for reservoir inflows use maximum number of complete water years in record. I noticed that Folsom does not change whereas every reservoir changes on an hourly update. In addition, San Francisco receives approximately one-tenth of its power from hydroelectricity generated by the gravity-driven flow from the Hetch Hetchy Reservoir. Our drinking water comes from a variety of protected sources carefully managed by the SFPUC. It looks like the red and blue lines are backwards on Folsom. 95 percent of. Historical average is near unattainable these days. 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. 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. Especially for small ones it is hard to identify them and click on them. Ive looked at reservoir sights for years. Before returning to the Bay Area, she held roles as transportation reporter and trending news reporter at the IndyStar in Indianapolis. Located in the northwest portion of Yosemite National Park, Hetch Greetings from Mount Laurel New Jersey. Data and Tools
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. 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.. //this function is called from the javascript from within the iframe after the contents of iframe are loaded (and after an additional 150ms delay)
finding an alternative water and power source (Hetchy Hetchy also California snowpack hits highest level this century for March. Hetch Hetchy is the only reservoir above its average storage of 63%, and is 82% full. The Bay Area's main reservoir is up 21 feet. not passed until 1928 five years after the dam was built. 1 kaf is the amount of water that would cover 1 acre in one thousand feet of water (or 1000 acres in water in 1 foot of water). How come the totals disagree with the cal map graphic? Maintaining this variety of sources is an important component of our near and long-term water supply management strategy. Thanks. It used to be full (and beyond). Also, do they provide inflows and outflows for locations? 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. The remaining 15 percent of water comes from runoff in the Alameda and Peninsula watersheds. setTimeout(function (){
https://engaging-data.com/ca-reservoir-level/ This site is a great tool, especially as we try to climb out of these drought years. "Some weather monitoring stations in the Feather River drainage received as much as 12 to 19 inches during the period of the storms," the department said. 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. Locked padlock 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. Flood control agencies (not DWR) have the most say in regard to releases. For each of the top 8 reservoirs the storage has increased by a total of 217 kaf, however). Monitoring location 11275500 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. dam and restoring the valley. Constitution used to support the arguments to remove the dam was The problem is that we have no idea of knowing ahead of time what kind of storms well have and how long theyll last, but the reservoir operators have to be super careful and extra cautious, so they periodically let the water flow out. ) or https:// means youve safely connected to the .gov website. I had a class in spillway design many years ago.
hetch hetchy reservoir level percentage - Examiner Restore Hetch Hetchy.
Map shows stunning improvement in California drought Hetch Hetchy Level before the storm: 3,729.68 feet Level after the storm: 3,750.99 feet Total rise: 21.31 feet Storage before the storm: 221,500 acre-feet Storage after the storm: 257,800. System for more than 60 percent of their drinking water. Shasta is the reservoir with the largest capacity and so it is the tallest row. lawsuit, saying Restore Hetch Hetchys arguments were preempted 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. I wonder why it doesnt work for you. I previously made a bar graph showing the overall level of water in the major California reservoirs. Id only be interested in the totals from Oroville and Shasta. . She joined the Chronicle as a data reporter in 2021. Share sensitive information only on official, secure websites. How Fast Are California Reservoirs Filling Up? The data on water storage comes from the California Department of Water Resources (DWR) Data Exchange Center. Our flagship blog features analysis of news from our staff and announcements of upcoming events.
PDF Water Supply Update - California 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? It seems likely one of those two readings is wrong. Ronald Reagan and George W. Bush. the issue, including those under Franklin Delano Roosevelt, Love this. Thanks for the prompt reply! It was my first time using D3 and it took me a long time to get up to speed. According to the SFPUC, the upper reaches of the Tuolumne River have received about 36 inches of rain since the start of the water year in October, almost as much as what the area averages in a year. A lock ( pertained to water that was wasted, and there was no claim that 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 is an excellent tool you have put together. They placed a few dissipators just before the river. The surplus has renewed concerns about San Francisco stockpiling water at the expense of rivers and the fish and wildlife that live there. During late summer and early fall, it will be necessary to move stored supplies from Cherry or Don Pedro Reservoirs into the pipeline. Click here for the SFPUC's 2020State of the Regional Water System Report. Check out my **new combined California reservoir and snowpack visualizer** to compare to historical values, as well asthe California precipitation tracker and California snowpack visualizer. While constructed and owned by San Francisco, the water system was in fact planned to benefit the greater San Francisco Bay Area population. Water is rapidly flowing into the state's reservoirs. Privacy Policy | 2011-2021 San Francisco Public Utilities Commission. Thats enough to supply the citys service area for perhaps seven years.
Hetch Hetchy gushes over wetlands Institute of the Environment and That includes the Tuolumne River, which provides water via Hetch Hetchy Reservoir to Bay Area customers. Thanks for putting this together. Thank you! While the rainfall has been bad for many people, I am happy to see Californias reservoirs are benefiting slightly, Amen!
CHERRY LK NR HETCH HETCHY CA - USGS Water Data for the Nation For perspective, water demand across the SFPUCs service area of 2.7 million people was about 205,000 acre-feet last fiscal year. We own and operate the Hetch Hetchy Regional Water System which serves 2.7 million customers. The water treatment facilities are Tesla Ultraviolet Treatment Facility, disinfecting the Hetch Hetchy supply; Sunol Valley Water Treatment Plant, treating the water from the Calaveras and San Antonio supply as well as the stored Hetch Hetchy supply; and Harry Tracy Water Treatment Plant, treating the water from the Crystal Springs and San Andreas supply. 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. Its fluctuating between ~107% and ~20% from one hour to the next (reading 107.6 atm). YTD values are from January 1 . 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. Next feature request: wire in aquifer level data! LK ELEANOR NR HETCH HETCHY CA. 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. Climbers Timmy O'Neill (left) and Lucho Rivera atop a wall overlooking Hetch Hetchy Reservoir. Just in case a large storm hits, that way they dont reach 100% capacity. I have wanted to do exactly this plot for years. Units are in kaf, thousands of acre feet. 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? O'Shaughnessy Dam was built on the Tuolumne River in 1923 to create Hetch Hetchy Reservoir. But tearing down O'Shaughnessy Dam in order to restore Hetch Hetchy Valley would be a disaster. If we reach 100% after the current rains and then it stops raining for the season, then our percentage will start going down. That cant be right. Much of the recent inflow was to Hetch Hetchy, which can hold. drained by the Tuolumne During most years, there will be a 30-day shut down of the Hetch Hetchy source in the winter months. Generation at Holm powerhouse below Cherry Lake would be less affected. It could be the 180% of historical average of snowpack, which will be melting in a couple months. "It was a very healthy shot in the arm. I do not see Diamond Valley Lake Resevoir on this page. . Prior to The Chronicle, she worked as a data journalist for Honolulu Civil Beat, a watchdog news organization covering the Hawaiian islands. Data have been checked by the reporting agency. So many facets beautifully chartered. Different presidential administrations also have tried to address Central Valleyfarms have installed enough drip irrigationstrips to reach the moon and back, an improvement that also enables more efficient application of fertilizer and pesticides. environmental context. and maybe another vertical axis to the right of that with reservoir capacity. I believe the spillway was designed by the State. Occasionally the source water will shift to local reservoirs during routine maintenance to the conveyance system. As it is, at first glance, it looks like shasta is at the top because its 28000 instead of 4552. very nice product overall. Water storage facilities include watersheds, dams, and reservoirs including: Calaveras, San Antonio, Crystal Springs, Pilarcitos, and San Andreas. This other page: https . She is a University of Washington graduate. administration attempted to allocate funds to study removing the Theyve also seen drought surcharges on their water bills.
SF's Hetch Hetchy water system is almost full. Is that a good thing? document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Subscribe to receive email notifications of new content. Assistant General Manager for Water Steven Ritchie credits the way the system is managed along with lower. They also built a spillway that was too steep and did not install energy dissipators along the spillway. You can also share a custom URL by clicking the Save URL button which will put the custom URL into the URL bar of your browser which you can then copy and share. February 21, 2023 - BAWSCA Statement on State Water Resources Control Board'sSchedule for Consideration of a Voluntary Agreement for the Tuolumne River. generates electricity for the city). 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. "This was rare for October. 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. Thats a very poor design. .
San Francisco Should Pay Yosemite the Dam Rent - perc.org Francisco Public Utilities Commissions 26 wholesale customers The citys water system also includes a water bank at Don Pedro Reservoir along the Tuolumne River, which was full as of Feb. 1. Thats a great suggestion and one that would be particularly helpful! So while that is kind of good news, he said, things start to look more grim after January produced paltry rainfall and, so far, February has also been dry. The reservoir is now projected to cost $4.4 billion, with Prop. Hetch Hetchy is one of nine reserviors in a water system that serves San Francisco and other Bay Area communities. One of the big challenges in water management is controling the release. Twenty of San Thanks for the link. I see many of the local canals flowing with lots of water.