Folsom Lake is letting the water flow out. 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. 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. Although Hetch Hetchy Reservoir is the most well-known, it stores less than 25% of the system's water. Call 209-372-0200 for the latest road and weather conditions, Hetch Hetchy Road Daily Hours: 8 am to 5 pm San Francisco and the thousands of suburban . Before returning to the Bay Area, she held roles as transportation reporter and trending news reporter at the IndyStar in Indianapolis. Privacy Policy | 2011-2021 San Francisco Public Utilities Commission. All of this work is nothing short of brilliant. Great stuff. 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. I love this this site too. The captured water is piped 150 miles to the Bay Area. 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. 7 days 30 days While the long-term voluntary agreement work continues, the SFPUC does not want to wait to restore the Tuolumne Rivers ecosystem. function reloadiframes(){ All Rights Reserved. Maintaining this variety of sources is an important component of our near and long-term water supply management strategy. 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. In 2021, the SFPUC and the Modesto and Turlock Irrigation Districts launched a proactive pilot program with the U.S. The soaking was welcome in a drought-plagued state with a diminishing water supply. Long-term values for reservoir inflows use maximum number of complete water years in record. Thinking more about it. . I previously made a bar graph showing the overall level of water in the major California reservoirs. Wapama Falls Trail | Yosemite National Park | Hikespeak.com Hetch Hetchy System - BAWSCA The Hetch Hetchy Reservoir in Yosemite delivers water to 2.6 million Bay Area residents every day. San Francisco maintained the phrase only You can find the charts below from the California Department of Water Resources website. YTD values are from January 1 . proposed as a source of water following the 1906 San Francisco Here's what that means. This local water is captured in reservoirs located in San Mateo and Alameda counties. 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. They are releasing water into the canals. word for a type of wild grass. Great URL. Wapama Falls (moderate) 5 mi (8 km) round-trip; 2 hours. I recently joined the team with Restore Hetch Hetchy as Engagement & Development Director. But tearing down O'Shaughnessy Dam in order to restore Hetch Hetchy Valley would be a disaster. 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. The main reason for the discrepancy, the department said, is that the focus of the atmospheric river was generally between the Golden Gate and Mount Lassen, meaning that the Feather River watershed received much more rainfall than the Shasta Lake drainage area. 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. 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. The recent spate of storms lifted the statewide snowpack to 190% of average for the start of the month, and more snow is on the way. She is a University of Washington graduate. Great graphs and very useful. According to the San Francisco Public Utilities Commission, Hetch Generation at Holm powerhouse below Cherry Lake would be less affected. CFR Title 33. Navigation and Navigable Waters 33 CFR 208.82 | FindLaw Save my name, email, and website in this browser for the next time I comment. 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 This is my first year watching the levels, so maybe Im missing something. While constructed and owned by San Francisco, the water system was in fact planned to benefit the greater San Francisco Bay Area population. City officials have touted their efforts to help salmon, for example by timing water releases to assist with migration and restoring breeding grounds. Reservoir levels rising. Owned by the city of San Francisco, Hetch Hetchy Reservoir Much of the recent inflow was to Hetch Hetchy, which can hold about 360,000 acre-feet of water and was 83% full at the start of the month. located in a national park and it passed the Raker Act in 1913 to Navigation and Navigable Waters 33.208.82 Hetch Hetchy, Cherry Valley, and Don Pedro Dams and Reservoirs. Lake Mendocino, which has a capacity of 122,400 acre feet, saw the biggest boost from 17% of storage capacity in December to 35% in January. pertained to water that was wasted, and there was no claim that Very nice work. 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. 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. Commission. Lake Mendocino and Lake Berryessa water levels stayed the same. Some want the city to leave more water in stream channels for threatened salmon while others continue a longshot bid to shut down Hetch Hetchy Reservoir in Yosemite altogether and return the area to its natural state. Water data back to 1956 are available online. 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. Our flagship blog features analysis of news from our staff and announcements of upcoming events. Historical average is near unattainable these days. 1 covering up to $875 million and much of the rest coming from federal loans to water suppliers. Its water supply Hetch Hetchy Reservoir, in the Sierra Nevada is 80% full, . Great Job on this site! February 21, 2023 - BAWSCA Statement on State Water Resources Control Board'sSchedule for Consideration of a Voluntary Agreement for the Tuolumne River. Ive added it to my bookmarks for quick reference. So many facets beautifully chartered. not passed until 1928 five years after the dam was built. Love the dashboard! Add a button to convert the row heights to log scale. During most years, there will be a 30-day shut down of the Hetch Hetchy source in the winter months. The regional water system provides water to 2.4 million people in San Francisco, Santa Clara, Alameda and San Mateo 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. Even with all the rain and floods, still a long way to fill them to capacity. A different story is unfolding at Hetch Hetchy reservoir in Yosemite National Park, where water is being released to conserve and restore wildlife. At this facility, which is shared with other water agencies, the city can stash water for credits against future draws on the river. Shasta, Oroville, Hetch Hetchy and many others were built by damming large rivers. What period does CA use for Historical Average? It will be very different depending on the period chosen. System for more than 60 percent of their drinking water. And the current water storage amounts are well below the historical averages for this time of year. Lake Almanor isnt controlled by DWR for flood/supply. The Water Education Foundation is a nonprofit, tax-exempt, 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. 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. Its supposed to be brown. Instructions: Congress had to approve the project because it was Python is used to extract the data from this page hourly and wrangle the data in to a clean format. But I would never have imagined how to put all the important information into a single plot. PDF Hetch Hetchy Regional Water System Water Supply and Delivery Status - SFPUC their water supply would cost hundreds of millions of dollars at The water travels through a series of pipelines before it reaches the Bay Area and blends with five local reservoirs. Fish and Wildlife Service that provides an immediate $4 million investment for habitat improvements for fisheries in the Tuolumne River. 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. 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. Most local reservoir inflow timeseries are too short to calculate long-term values. 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. 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. Hetch Hetchy Reservoir - O'Shaugnessy Dam - National Park Service Even with the latest precipitation, Folsoms values was unchanged. ) or https:// means youve safely connected to the .gov website. In 2007, the Bush Great resource! An official website of the United States government. Bay Area: Do You Know Where Your Water Comes From? California reservoir levels: . Monitoring location 11277500 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. administration attempted to allocate funds to study removing the This dashboard is great! California Reservoir Levels - Dashboard and visualization showing current water levels in California reservoirs . What happened to the Hetch Hetchy level? "It was a very healthy shot in the arm. River. Wonderful site. Water System | SFPUC For example, Hetch Hetchy Reservoir in Yosemite National Park provides 85 percent of San Francisco's total water needs. Hetch Hetchy Reservoir in Yosemite National Park is seen in 2022. Usually with warm ARs, you get a dramatic increase in inflow, which can fill even very large reservoirs relatively quickly, like Oroville in 2017. Regional Watersheds | SFPUC But the growing water reserves dont please everyone. Good info to know. Especially for small ones it is hard to identify them and click on them. 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. The remaining 15 percent of water comes from runoff in the Alameda and Peninsula watersheds. environmental context. United States. 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. Thanks for putting this together. . So on Jan 10 were at 82% of the average for Jan 10. 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. This is a great and very thoughtfully designed web site! The source water from SFPUC is typically from the Hetch Hetchy reservoir located in the Sierra Nevada Mountains. lawsuit, saying Restore Hetch Hetchys arguments were preempted Thats a very poor design. Hetch Hetchy Regional Water System, which serves San Francisco, California snowpack hits highest level this century for March. I would think with the rain it would get to historical average and then more outflow would happen. Yep. draining the reservoir to court, arguing in 2015 that the Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. The SFPUC has also raised concerns over the fishery benefits of the States Plan. They also built a spillway that was too steep and did not install energy dissipators along the spillway. This dashboard provides a bit more detail on the state of each of the reservoirs while also showing an aggregate total. Its fluctuating between ~107% and ~20% from one hour to the next (reading 107.6 atm). The trail takes you to the base of Wapama Falls, passing two smaller waterfalls (during spring) on the way. The advocacy group Restore Hetch Hetchy took its case for 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. Copyright Barry Rokeach, 2014. Jeff, the average changes daily as well. John Muir and the Hi Keith, you could de-select the large reservoirs from the menu at the top right. finding an alternative water and power source (Hetchy Hetchy also Turn right on to Hetch Hetchy Road - Evergreen Road and continue another 7.5 miles to the parking area for Hetchy Hetchy Reservoir next to the dam. She joined the Chronicle as a data reporter in 2021. I do not see Diamond Valley Lake Resevoir on this page. A truly excellent project. has a graph which shows how the historical avg changes throughout the year (oscillating between ~15000 and ~21000). 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. The current power produced by the SFPUC system, although not carbon-based, is not green since it requires the continued destruction of significant habitat. Amid a worsening drought, water supplies at one important reservoir are Monitoring location 11275500 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. Interesting. Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commission's water system. Thats up more than 400,000 acre-feet since early December, before the unrelenting series of atmospheric river storms blew through California between Christmas and mid-January. Located in the northwest portion of Yosemite National Park, Hetch supplies water to the San Francisco Bay Area. Cherry Lk Nr Hetch Hetchy Ca | California Reservoir Levels - SNOFLO I have to agree with many people here what a great job making such a clear graph of whats happening. LK ELEANOR NR HETCH HETCHY CA. I havent spent much time looking at it but that data is on the CDEC website. For the class we based all our designs on the USACE spillway design manual. Tracy Barbutes, Freelance / Special to The Chronicle, Heres where California reservoir levels stand after this weeks rains. The water system, which includes the landmark Hetch Hetchy Reservoir, is expected to fill this winter, for the first time since 2019, with nearly 1.5 million acre-feet of water. This is the first state (of 6 I have lived in) that has had water police and restrictions. Interactive California Reservoir Levels Dashboard - Engaging Data . Locked padlock by the Raker Act. Thanks. Data and Tools The Hetch Hetchy Reservoir that supplies San Francisco, seen here in February, is among those that have refilled after two months of storms.