Trailhead coordinates: 37.946905, -119.787376 (37 56 48.85N 119 47 14.55W) This is my first year watching the levels, so maybe Im missing something. Local reservoir inflows have negative daily flow rates set to zero. The advocacy group Restore Hetch Hetchy took its case for Shasta is very large and could hold about 3.5 cubic kilometers of water at full (but not flood) capacity. Could you also show each reservoirs level as a function of time? I see many of the local canals flowing with lots of water. All of this work is nothing short of brilliant. Hetchy Reservoir can store as much as 117 billion gallons for the Fish and Wildlife Service that provides an immediate $4 million investment for habitat improvements for fisheries in the Tuolumne River. I previously made a bar graph showing the overall level of water in the major California reservoirs. During late summer and early fall, it will be necessary to move stored supplies from Cherry or Don Pedro Reservoirs into the pipeline. BAWSCA agencies advocated for the capital improvement program that was adopted by the SFPUC in 2002, and are actively monitoring its implementation. I was thinking that it would be interesting to compare inflows and outflows. ) or https:// means youve safely connected to the .gov website. 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. Is the Stanley Quencher tumbler worth its TikTok hype? He frequently writes about water, wildfire, climate and the American West. 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. Units are in kaf, thousands of acre feet. 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. But Sites would be what's called an off-channel . It was my first time using D3 and it took me a long time to get up to speed. United States. Thank you for a beautiful job. How Much Water is in California Reservoirs? Together, the BAWSCA agencies account for two-thirds of water consumption from the system and pay for two-thirds of its upkeep. Emissions must be offset by dedicated conservation programs or renewable energy generation such as wind or solar. Remaining Capacity text in the legend should be brown? As of Feb. 1, the systems total water storage was just over 1.3 million acre-feet, or about 92% of capacity. 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 Stay up-to-date with breaking news and upcoming events. Hetch Hetchy Reservoir in Yosemite National Park is seen in 2022. Voters rejected a 2012 provides water to 2.7 million residents and businesses in the San Historical average is near unattainable these days. The snowpack there, which will eventually melt and flow into reservoirs, is already bigger than the average peak snowpack, which typically comes around April 1. 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. Sacramento CA 95833, Everything about California water that matters, Western States Water Agencies and Districts. https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=SHA Great work. function reloadiframes(){ scenic mountain valley in a national park. In addition, San Francisco receives approximately one-tenth of its power from hydroelectricity generated by the gravity-driven flow from the Hetch Hetchy Reservoir. McClintock bill proposes to improve public access at Hetch Hetchy. Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. Is that a good thing? May 24, 2022 - BAWSCA Statement About the Adoption of a Systemwide Water Use Reduction of 11%. This would allow us to see important, but noise-level reservoirs like hetch hetchy. Monitoring location 11275500 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. 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. 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. Best of luck out there in California! word for a type of wild grass. reservoir violates the California Constitution specifically the Curious why Shasta lake seems to be making big gains in water coming in and Trinity not so much? San Franciscos water-bank in Don Pedro Reservoir, downstream on the Tuolumne River, holds twice as much water as Hetch Hetchy. Privacy Policy | 2011-2021 San Francisco Public Utilities Commission. 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. proposition that would have funded an $8 million study on how 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. City officials have touted their efforts to help salmon, for example by timing water releases to assist with migration and restoring breeding grounds. Quite an eye opener. 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. The upcountry portion of the System begins with Hetch Hetchy Reservoir in Yosemite National Park. I do not see Diamond Valley Lake Resevoir on this page. As it is, at first glance, it looks like shasta is at the top because its 28000 instead of 4552. very nice product overall. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Subscribe to receive email notifications of new content. In Yosemite National Park, the Hetch Hetchy reservoir relies. The citys water system also includes a water bank at Don Pedro Reservoir along the Tuolumne River, which was full as of Feb. 1. 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. 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. What period does CA use for Historical Average? It will be very different depending on the period chosen. Im curious: Lk Almanor is the 8th largest reservoir in CA. Each row represents one reservoir, with bars showing how much of the reservoir is filled (blue) and unfilled (brown). I would think with the rain it would get to historical average and then more outflow would happen. This dashboard provides a bit more detail on the state of each of the reservoirs while also showing an aggregate total. Lake ShastaLevel before the storm on Oct. 22: 882.57 feetLevel after the storm on Nov. 1: 885.47 feetTotal rise: 2.9 feet, Storage before the storm: 970,859 acre-feetStorage after the storm: 1,001,879 acre-feetTotal storage increase: 31,020 acre-feet, Lake OrovilleLevel before the storm: 630.80 feetLevel after the storm: 661.20 feetTotal rise: 30.4 feet, Storage before the storm: 799,638 acre-feetStorage after the storm: 982,263 acre-feetTotal storage increase: 182,625 acre-feet, Hetch HetchyLevel before the storm: 3,729.68 feetLevel after the storm: 3,750.99 feetTotal rise: 21.31 feet, Storage before the storm: 221,500 acre-feetStorage after the storm: 257,800 acre-feetTotal storage increase: 36,300 acre-feet, Trinity LakeLevel before the storm: 2,209.55 feetLevel after the storm: 2,213.22 feetTotal rise: 3.67 feet, Storage before the storm: 648,675 acre-feetStorage after the storm: 672,930 acre-feetTotal storage increase: 24,255 acre-feet, Folsom LakeLevel before the storm: 370.28 feetLevel after the storm: 390.33 feetTotal rise: 20.05 feet, Storage before the storm: 214,225 acre-feetStorage after the storm: 318,577 acre-feetTotal storage increase: 104,352 acre-feet, New Melones LakeLevel before the storm: 916.28 feetLevel after the storm: 917.09 feetTotal rise: 0.81 feet, Storage before the storm: 822,619 acre-feetStorage after the storm: 827,786 acre-feetTotal storage increase: 5,167 acre-feet, Don PedroLevel before the storm: 723.96 feetLevel after the storm: 727.41 feetTotal rise: 3.45 feet, Storage before the storm: 970,226 acre-feetStorage after the storm: 995,836 acre-feetTotal storage increase: 25,610 acre-feet, McClureLevel before the storm: 663.70 feetLevel after the storm: 672.27 feetTotal rise: 8.4 feet, Storage before the storm: 180,900 acre-feetStorage after the storm: 198,467 acre-feetTotal storage increase: 17,210 acre-feet. The Bay Area transmission system also includes Irvington Tunnel 1 and Tunnel 2, the Bay Tunnel, and the Crystal Springs Bypass Tunnel. Trinity Lake, with a capacity of 2,447,650 acre-feet, had the smallest increase, from 29% in December to 30% in January. Hours: Year-round, but only accessible by car when the Hetch Hetchy Road is open. looks like the CDEC website is the cause of the issue unless it actually dropped 90% in a day: The blue line indicates the reservoirs water level one year ago today. Generation at the Kirkwood power plant would depend on the natural flow of the Tuolumne River, and would be significantly diminished during late summer and fall. Current and Historical Visualization, https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=HTH, https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=SHA, https://engaging-data.com/ca-reservoir-level/, https://cdec.water.ca.gov/reportapp/javareports?name=RES, Visualizing Californias Water Storage Reservoirs and Snowpack, Interactive California Reservoir Levels Dashboard. 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. What happened to the Hetch Hetchy level? UPDATE: Here's where California reservoir levels stand after this week's rains. not passed until 1928 five years after the dam was built. I have to agree with many people here what a great job making such a clear graph of whats happening. 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). Ive added it to my bookmarks for quick reference. resizeframe(); She joined the Chronicle as a data reporter in 2021. Wonderful site. United States. 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. San Franciscos Hetch Hetchy water system is almost full for the first time in years. }, false); Lake Tahoe really isnt part of California water, as the outflow goes to Nevada. It could be the 180% of historical average of snowpack, which will be melting in a couple months. Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commissions water system. I find myself coming back to this every few days to check on our water . Python is used to extract the data from this page hourly and wrangle the data in to a clean format. Although Hetch Hetchy Reservoir is the most well-known, it stores less than 25% of the system's water. Kudos to the designers. Diamond Valley Lake is a man-made storage reservoir for storing imported water only. After the reservoirs Really appreciate the work you did to build this graph. Ive looked at reservoir sights for years. Our drinking water comes from a variety of protected sources carefully managed by the SFPUC.