Great stuff. In the year prior to Oroville reaching capacity the interactive chart showed the rate of inflow over time. Over the summer, Gov. The construction of the Hetch Hetchy Railroad took place from 1915 to 1918. Last week, I paid a visit to Hetch Hetchy. 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. Thats a great suggestion and one that would be particularly helpful! UPDATE: Here's where California reservoir levels stand after this week's rains. The overall storage is said to have dropped by 57.4 to 56.4 (or 302 kaf). https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=HTH Kurtis Alexander is an enterprise reporter for The San Francisco Chronicle, with a focus on natural resources and the environment. 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. Amy Graff is the news editor for SFGATE. 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. Important Legacy real-time page. Theyve also seen drought surcharges on their water bills. Is that a good thing? You can also use it to monitor only the reservoirs you are most interested in. Love the dashboard! This other page: https . "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. Within San Francisco, we manage water distribution in the City. That includes the Tuolumne River, which provides water via Hetch Hetchy Reservoir to Bay Area customers. Great visualization Chris! 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. Ronald Reagan and George W. Bush. These sources are diverse in both the origin of the supply snowmelt, rainfall and recharge of groundwater and their location within our system. and maybe another vertical axis to the right of that with reservoir capacity. Lake Shasta, the state's largest reservoir, rose 2.9 feet and added 31,020 acre-feet of water. Most local reservoir inflow timeseries are too short to calculate long-term values. 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. After the reservoirs Water is rapidly flowing into the state's reservoirs. environmental context. The 1913 Raker Act authorized the unprecedented dam inside the park and also set the fee that the city pays to rent the entire valley in which the dam sits: $30,000 per year. 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. 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. 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. Thank you for the time and effort in creating the graphs. thanks. Also a little nit. More about the Tuolumne River Voluntary Agreement can be found athttp://www.tuolumnerivermanagementplan.com. The middle portion of the watershed from New Don Pedro Reservoir to above Hetch Hetchy Reservoir is characterized by deep canyons and forested terrain. 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. Shasta is the reservoir with the largest capacity and so it is the tallest row. A truly excellent project. For example, Hetch Hetchy Reservoir in Yosemite National Park provides 85 percent of San Francisco's total water needs. 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. John Muir and the Great URL. Part of the lake is on the California side, but it has zero California water impact beyond the immediate Tahoe residents. If a reservoir gets filled to 100% and more, the dam will break and many cities will get flooded, so the operators are careful. This hike follows the shoreline of the reservoir with moderate up and downhill hiking. What period does CA use for Historical Average? It will be very different depending on the period chosen. The main goal of this visualization is to provide a quick overview of the status of the main reservoirs in the state and how they compare to historical levels. since it required flooding a It used to be full (and beyond). Voters rejected a 2012 Even with all the rain and floods, still a long way to fill them to capacity. She was previously an engagement reporter. She joined the Chronicle as a data reporter in 2021. Lake Mendocino and Lake Berryessa water levels stayed the same. How Fast Are California Reservoirs Filling Up? For each of the top 8 reservoirs the storage has increased by a total of 217 kaf, however). 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. There is something strange about the data over the last two days (Jan.17 to Jan. 19): Your email address will not be published. Northern California's reservoir levels continued to rise in the week after an atmospheric river slammed the state with torrential rain and high winds. SFPUC said as of this week, the Hetch Hetchy reservoir is at 92 percent capacity. I am new to the state. 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. 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. Hetch Hetchy Reservoir in Yosemite was 69 percent full on Tuesday, 150 percent of normal for this time of year. Could you also show each reservoirs level as a function of time? YTD values are from January 1 . So many facets beautifully chartered. This would allow us to see important, but noise-level reservoirs like hetch hetchy. Maintaining this variety of sources is an important component of our near and long-term water supply management strategy. 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. Only modest new supplies would be required in the driest years. Lots of possibilities, just curious. The question was, what constitutes unreasonable method of I like the comparisons of last year, and the historical average. 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. Shasta is very large and could hold about 3.5 cubic kilometers of water at full (but not flood) capacity. This is wonderful information. The Hetch Hetchy Valley today with the dam seen in the lower right. 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. function resizeframe(){ Yep. The water is delivered by a gravity-based system and aqueduct to Its just small enough that the name doesnt appear as the bar is too thin. Another not monitored by the State? sends student to hospital, Heres how much rain and snow is on the way this weekend, Your Privacy Choices (Opt Out of Sale/Targeted Ads). The Water Education Foundation is a nonprofit, tax-exempt, Historical average is near unattainable these days. Winter weather conditions may cause road closures. 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. Secure .gov websites use HTTPS Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. Nice! 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. From the main road, it's about a 20- to 25-minute drive to the parking area. Santa Clara, Alameda and San Mateo counties. 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). This website along with another shows that Eastmans level is still rising even though we have not had rain in more than a week. 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. Located in the northwest portion of Yosemite National Park, Hetch Prior to The Chronicle, she worked as a data journalist for Honolulu Civil Beat, a watchdog news organization covering the Hawaiian islands. Fish and Wildlife Service that provides an immediate $4 million investment for habitat improvements for fisheries in the Tuolumne River. "It's an increase of a few percent, . Why is it not listed? 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. over the past few days. however, Ill update the code to include it soon. P.S. McClintock bill proposes to improve public access at Hetch Hetchy. 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.