Begin at O'Shaughnessy Dam. 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. A diverse mix of sources protects us from potential disruptions due to emergencies or natural disasters, provides resiliency during periods of drought, and helps us ensure a long-term, sustainable water supply as we address issues such as climate uncertainty, regulatory changes and population growth. Also a little nit. Maybe bad data. Hetch Hetchy is the only reservoir above its average storage of 63%, and is 82% full. Amy Graff is the news editor for SFGATE. Didnt realize how bad things were there. A .gov website belongs to an official government organization in the This local water is captured in reservoirs located in San Mateo and Alameda counties. At the same time, theyve also said its critical to maintain sufficient water supplies to keep Bay Area communities and its economy running during a prolonged drought. In 2021, the SFPUC and the Modesto and Turlock Irrigation Districts launched a proactive pilot program with the U.S. function resizeframe(){ The half-hour drive to Hetch Hetchy from CA Highway 120 begins outside the park boundaries. Folsom is like an overflow tank. Love easy to read and understand information. //this function is called from the javascript from within the iframe after the contents of iframe are loaded (and after an additional 150ms delay) Sacramento CA 95833, Everything about California water that matters, Western States Water Agencies and Districts. How do I pay my bill? https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=HTH Meanwhile, the group Restore Hetch Hetchy is urging the SFPUC to abandon Hetch Hetchy Reservoir. Hoping they start building more reservoirs soon. scenic mountain valley in a national park. Monitoring location 11275500 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. reloadiframes(); Also, do they provide inflows and outflows for locations? This chart only shows reservoirs filled via natural flow/rainfall. If you look at this chart for Hetch Hetchy, you can see that the biggest and steadiest rise is between March and July, https://waterdata.usgs.gov/monitoring-location/11275500/#parameterCode=00054&period=P365D&compare=true. How can I apply to SFPUC? It is on the graph. The remaining 15 percent of water comes from runoff in the Alameda and Peninsula watersheds. Maybe just acre/ft with ^ or down arrow. Ive been meaning to search for aquifer levels. This almost happened with the Orville Dam in 2017. "It's an increase of a few percent, . California snowpack hits highest level this century for March. Its not possible to see or really interact with the tiniest slivers. Thats enough to supply the citys service area for perhaps seven years. 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. The upcountry portion of the System begins with Hetch Hetchy Reservoir in Yosemite National Park. 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. An improvement: Could you include a bar for Last year at this date? This local water is captured in reservoirs located in San Mateo and Alameda counties. The Water Education Foundation is a nonprofit, tax-exempt, . Having it here would be great! But they'll cost you, Fight at high school basketball game in S.F. }, false); Lake Tahoe really isnt part of California water, as the outflow goes to Nevada. . Shasta is the reservoir with the largest capacity and so it is the tallest row. 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. resizeframe(); Great resource! Hetch Hetchy is Monitoring location 11275500. The overall storage is said to have dropped by 57.4 to 56.4 (or 302 kaf). Thanks. Constitution used to support the arguments to remove the dam was Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commissions water system. That cant be right. Commission. 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. Great Job on this site! 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. Restore Hetch Hetchy supports a power replacement plan that is truly renewable, and will not increase emissions of any pollutants or carbon that causes global warming. 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. I live in the central valley. The gain came after weather gauges in the area recorded more than 5 inches from one storm. BAWSCA Board of Directors Meeting, March 16, 2023, 6:30 PM. in 2018. How can I match up other monitoring locations similar to the ones on this Interactive Dashboard? One gauge in the area has measured 6.12 inches since Oct. 1, which is 899% of normal. Thats a very poor design. use must be reasonable.. There is something strange about the data over the last two days (Jan.17 to Jan. 19): Then it has the appearance of something filling up, while still providing all the detail. Reservoir levels rising. One acre-foot is the equivalent of one acre of land covered in one foot of water. This is also affected by most of these dams multi-purpose nature where they are near constantly releasing for power(like Shasta) or to make room for flood control capacity(like Folsom). a broad meaning that had been previously applied in an I dont know if weve seen anything like this in October before.". A separate vote would have been 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. Hi Keith, you could de-select the large reservoirs from the menu at the top right. I notice Briones Reservoir is not on the list. and its snowmelt-fed water supply, water from Hetch Hetchy Why isnt Lake Sonoma included? 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. Rizzardo said there was a decent amount of flow into the reservoirs into January, even though weather-wise it was bone dry, a result of lower elevation snow at 4,000 to 6,000 feet making its way into the reservoirs. Hours: Year-round, but only accessible by car when the Hetch Hetchy Road is open. So many facets beautifully chartered. The question was, what constitutes unreasonable method of Official websites use .gov United States. document.getElementById('globes').contentWindow.location.reload(); A small portion of the citys water comes from local reservoirs. Getting There. 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. She joined the Chronicle as a data reporter in 2021. Share sensitive information only on official, secure websites. Lock Delivery rates are 7-day average values. it will be cool if there is a way to track the change since Dec or some such date. For some strange unknown reason, they are not allowing the lake to fill up. Previously, Kellie covered dining news and trends, visual arts, events and nightlife for the Arizona Republic, and freelanced for the former Contra Costa Times. their water supply would cost hundreds of millions of dollars at 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. I appreciate the information you are providing. Save my name, email, and website in this browser for the next time I comment. Assistant General Manager for Water Steven Ritchie credits the way the system is managed along with lower. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. } These sources are diverse in both the origin of the supply snowmelt, rainfall and recharge of groundwater and their location within our system. Hetch Hetchy Reservoir in Yosemite National Park is seen in 2022. Its fluctuating between ~107% and ~20% from one hour to the next (reading 107.6 atm). Is the Stanley Quencher tumbler worth its TikTok hype? } 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? There doesnt seem to be any site that shows the impact of each storm. 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. construction in the 1920s, various groups have lobbied to restore 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? The height of the row indicates how much water the reservoir could hold. A lock ( Hetch Hetchy Water System The system originates more than 100 miles from its primary customers, in Yosemite National Park. San Franciscos water-bank in Don Pedro Reservoir, downstream on the Tuolumne River, holds twice as much water as Hetch Hetchy. Its important to note that other communities in California have taken actions in far greater magnitude than SF to make our waterways more sustainable. Great graphs and very useful. A different story is unfolding at Hetch Hetchy reservoir in Yosemite National Park, where water is being released to conserve and restore wildlife. Monitoring location 11277200 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. I am grateful for all that you have done here to open our eyes to what is happening, what has happened, and even what might be on the horizon. Saved to my favorites now. "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. has a graph which shows how the historical avg changes throughout the year (oscillating between ~15000 and ~21000). over the past few days. It certainly looks dry at least until the last week in February, he said. This website along with another shows that Eastmans level is still rising even though we have not had rain in more than a week. I would think with the rain it would get to historical average and then more outflow would happen. 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. Its just small enough that the name doesnt appear as the bar is too thin. May 24, 2022 - BAWSCA Statement About the Adoption of a Systemwide Water Use Reduction of 11%. The water transmission system in the Bay Area and Peninsula includes the Bay Division, San Andreas, Sunset Supply, and Crystal Springs pipelines. This system encompasses more than 1,250 miles of distribution pipelines, as well as 12 in-City reservoirs and eight water tanks with a total storage capacity of approximately 413 million gallons. Email: kalexander@sfchronicle.com Twitter: @kurtisalexander. I love this this site too. Official websites use .gov 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. Best of luck out there in California! Data and Tools do so. 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. located in a national park and it passed the Raker Act in 1913 to The area around Shasta has more volcanic soils that absorb rainfall than the Feather River drainage. Share sensitive information only on official, secure websites. 2151 River Plaza Drive, Suite 205 But the growing water reserves dont please everyone. 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. The trail includes spectacular views of Tueeulala and Wapama Falls. Thanks. Lake Shasta and Mendocino are also well below average. Im curious why the percentage of capacity has stayed almost flat for the past 6 weeks or so and below historical average. According to the San Francisco Public Utilities Commission, Hetch Is that from melting snow and rain water coming from the mountains and filling it up? This was helpful to project seasonal trends & storm impacts. 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. Flood control agencies (not DWR) have the most say in regard to releases. Id love to see how much water is being / has been released from these reservoirs. Click here for the SFPUC's 2020State of the Regional Water System Report. Hetch Hetchy water travels 160 miles via gravity from Yosemite to the San Francisco Bay Area. Could you also show each reservoirs level as a function of time? dam and restoring the valley. The advocacy group Restore Hetch Hetchy took its case for It seems likely one of those two readings is wrong. DWR is one of many local, State and Federal entities that dictate water releases. While the rainfall has been bad for many people, I am happy to see Californias reservoirs are benefiting slightly, Amen! 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. Its currently listed on this page as 29kaf full, but the usgs.gov page below says Hetch Hetchy is at 299.7kaf full. Super frustrating. P.S. For detailed analysis of how San Franciscos water system will operate without Hetch Hetchy reservoir, see the Environmental Defense Funds studiesParadise RegainedandCherry Intertie Alternative. That includes the Tuolumne River, which provides water via Hetch Hetchy Reservoir to Bay Area customers. 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 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. Horoscope for Friday, 3/03/23 by Christopher Renstrom, No seriously, dont drive up to Tahoe this weekend, Wife of Jeffrey Vandergrift issues somber update, Snowboarder dies at Tahoe ski resort following historic blizzard, Scream publicity stunt floods Bay Area dispatch with 911 calls, The best fried chicken is at a San Francisco strip club, Rain reenters Bay Area forecast: Have an umbrella near you, The Warriors broke Russell Westbrook, just like old times, Mochi muffin bakery closes SF cafe after just 4 months, Arrest in killing of woman seen running through Tahoe campground, Oakland ransomware attackers leak 'confidential' data, California Department of Water Resources website, 14 things you need in your car before you drive to Tahoe. thanks. For perspective, water demand across the SFPUCs service area of 2.7 million people was about 205,000 acre-feet last fiscal year. Restore Hetch Hetchy intends to undo this Great American mistake, and return the valley to Yosemite National Park and all people. For each of the top 8 reservoirs the storage has increased by a total of 217 kaf, however). 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. If you are on a mobile device you can tap the reservoir to get that same info. In response to the Bay-Delta Plan, the SFPUC and the Modesto and Turlock Irrigation Districts have proposed the Tuolumne River Voluntary Agreement, a combination of flow and non-flow measures sufficient to improve all life-stages of native fish populations in the lower Tuolumne River. A .gov website belongs to an official government organization in the Arg. window.addEventListener("orientationchange", function() { City officials have touted their efforts to help salmon, for example by timing water releases to assist with migration and restoring breeding grounds. Our flagship blog features analysis of news from our staff and announcements of upcoming events. Yoohyun Jung is the Deputy Data Editor for The San Francisco Chronicle. reservoir violates the California Constitution specifically the Thanks for providing it for public information. The regional water system provides water to 2.4 million people in San Francisco, Santa Clara, Alameda and San Mateo counties. Meant this comment for the integrated snowpack and reservoir view. ) or https:// means youve safely connected to the .gov website. Hetchy refers to a valley in the Sierra Nevada and a reservoir that I see many of the local canals flowing with lots of water. Hi, I started by using this page (https://cdec.water.ca.gov/reportapp/javareports?name=RES) to determine which reservoirs to include and for some reason Almanor isnt on the list. Kudos to the designers. Department of Water Resources is just another in a long line of completely mismanaged California entities. Why is Lake Nacimiento and Lake San Antonio not listed? I think the problem is with the CDEC database (as the LakesOnline website also has had incorrectly high information). Your email address will not be published. The reservoir is eight miles long and the largest single body of water in Yosemite. Francisco Bay Area. Only improvement I would suggest is an improvement of the display of the smaller reservoirs so the names are readable. 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. Climbers Timmy O'Neill (left) and Lucho Rivera atop a wall overlooking Hetch Hetchy Reservoir. All of this work is nothing short of brilliant. Monitoring location 11275500 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. Sometimes this is well done sometimes it is poorly done. It has no natural inflow or out flow. The OShaughnessy Dam i s 300 feet tall only medium-sized by todays standards. 7 days 30 days Only modest new supplies would be required in the driest years. a minimum, according to the San Francisco Public Utilities If you look at the inflow data on the major reservoirs, its pretty flat. 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. 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. Hetch Hetchy has generated controversy since it was first Yep. This dashboard provides a bit more detail on the state of each of the reservoirs while also showing an aggregate total. A wet December produced ample snowfall, which is still sitting at high elevations. Secure .gov websites use HTTPS Similar to the water supply issues discussed above, the amount of power replacement is small in a statewide context less than of 1% of the renewable power supply being developed this decade alone. Lots of possibilities, just curious. Due to its high-altitude location at 3,900 feet above sea level In the year prior to Oroville reaching capacity the interactive chart showed the rate of inflow over time. Even with all the rain and floods, still a long way to fill them to capacity. Other California water agencies have done far more to reduce the impact of their system on Mono Lake, the Trinity and San Joaquin Rivers, and the Bay-Delta. Although Hetch Hetchy Reservoir is the most well-known, it stores less than 25% of the systems water. My guess would be that the recent systems have been cold and so they are predominantly dropping snow on the watershed. Hetch Hetchy is one of nine reserviors in a water system that serves San Francisco and other Bay Area communities. Winter weather conditions may cause road closures. It was at 60 percent as of March 1 and rising, according to the Bureau of Reclamation. Folsom Lake is letting the water flow out. Is it because the laws have changed on how much each reservoir can hold or is it in anticipation of significantly more rain? Units are in kaf, thousands of acre feet. drained by the Tuolumne This file photo shows Shasta Lake. Your email address will not be published. pertained to water that was wasted, and there was no claim that If we reach 100% after the current rains and then it stops raining for the season, then our percentage will start going down. 2013, photo, the Hetch Hetchy Reservoir is hazy with smoke . For the higher elevations, more of their water comes directly from snowmelt. the Bay Area. Call 209-372-0200 for the latest road and weather conditions, Hetch Hetchy Road Daily Hours: 8 am to 5 pm The worst possible scenario is it just remains completely dry. the Hetch Hetchy Valley to its natural state. Near the town of La Grange, the river exits the Sierra Nevada foothills and flows through a gently sloping alluvial valley that is incised into Pleistocene alluvial fans. Your tools are awesome just hurts when you receive bad data at times! The Hetch Hetchy Reservoir that supplies San Francisco, seen here in February, is among those that have refilled after two months of storms. Great work. GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System. however, Ill update the code to include it soon. 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. Santa Clara, Alameda and San Mateo counties. Hetch Hetchy water travels 160 miles via gravity from Yosemite to the San Francisco Bay Area. Francisco Public Utilities Commissions 26 wholesale customers Emissions must be offset by dedicated conservation programs or renewable energy generation such as wind or solar. This dashboard is great! . required on whether to demolish OShaughnessy Dam. 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? Northern California's reservoir levels continued to rise in the week after an atmospheric river slammed the state with torrential rain and high winds. This is my first year watching the levels, so maybe Im missing something. Water data back to 1930 are available online. In another sign that Californias drought is easing, San Francisco captured more than a years worth of water in just one months time. An official website of the United States government. Quite an eye opener. I also added the ability to select specific reservoirs to display on the graph and share a custom URL which will point those selected reservoirs (click on list button on top right of dashboard). The middle portion of the watershed from New Don Pedro Reservoir to above Hetch Hetchy Reservoir is characterized by deep canyons and forested terrain.

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