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Announcements
07/28/2010 - Preseason Flood Coordination Meetings:
The Flood Operations Branch is hosting Preseason Flood Coordination Meetings this fall in both Northern and Southern CA. See attached fact sheet for locations and dates. For further information, please contact Wendy Stewart with the Flood Operations Center at 916-574-2619.
Please click here 
07/19/2010 - 10-Day Feather River QPF: 10-Day Feather River QPF for July 19, 2010 is available now. The next update of this forecast will be about Monday, August 2, 2010, unless there are significant hydrologic changes.
Please click here 07/08/2010 - Executive Update of Hydrologic Conditions for July 1, 2010:
A synopsis of statewide water conditions has been updated on CDEC as of June 1, 2010. This product is generally updated weekly or biweekly (sooner if hydrologic conditions warrant it ) during the wet season. Beginning about June 1, this product is updated monthly through the summer and dry fall months, unless there are significant hydrologic changes. The next anticipated update will be about Monday, August 9, 2010. The Executive Update of Hydrologic Conditions can be found at:
http://cdec.water.ca.gov/cgi-progs/reports/EXECSUM
05/25/2010 - 2009 Local Agency Annual Report (AB156): 2009 Local Agency Annual Report (AB156) is now available from CDEC home page and is located under the More Information Box. The electronic version of the 2009 Local Agency Annual Report and the announcement of the 2010 workshops are also available from the following links:
http://cdec.water.ca.gov/lma.html http://cdec.water.ca.gov/cgi-progs/products/workshop_announcement_2010.pdf 04/30/2010 - DWR Announces Final Snow Survey Results: Late Storms Brighten Outlook
On the heels of late season storms, manual and electronic readings today indicate that water content in California’s statewide mountain snowpack is 143 percent of normal.
Please click here 04/27/2010 - New application to get Monthly Data by Water Year is now available at Query Tools webpage on CDEC website:
http://cdec4gov.water.ca.gov/queryTools.html
04/27/2010 - DWR Schedules Final Snow Survey of 2009-2010 Season
The California Department of Water Resources (DWR) will conduct its final snow survey of the 2009-2010 season at 11 a.m. on Friday, April 30, near Lake Tahoe.
News Release... 04/19/2010 - Station Search Application has been enhanced
Station Search Application has been enhanced to provide tabularreports on added fields: Latitude, Longitude, Elevation and Operator:
http://cdec.water.ca.gov/cgi-progs/staSearch http://cdec.water.ca.gov/cgi-progs/products/whatisnew.pdf 03/25/2010 - DWR Schedules Fourth Snow Survey of 2009-2010 Season
The California Department of Water Resources (DWR) will conduct its fourth snow survey of the season at 11 a.m., Thursday, April 1, 2010, near Lake Tahoe.
Press Release 03/03/2010 - DWR Announces Third Snow Survey Results Of 2009-2010 Winter Season
Manual and electronic readings today indicate that water content in California's mountain snowpack is 107 percent of normal for the date. This time last year, snow water content statewide was 80 percent of normal.
Please click here Video...03/01/2010 - DWR Schedules Third Snow Survey of 2009-2010 Season
SACRAMENTO -- The California Department of Water Resources (DWR) will conduct its third snow survey of the season at 11 a.m., Wednesday, March 3, 2010, near Lake Tahoe.
Press Release 03/01/2010 - California's Monthly Drought Update:
California Drought, An Update, March 2010 Please click here for Update Website02/11/2010 - New Weekly Product Forecast Discussion - New Weekly Product Forecast Discussion is Available on Bulletin 120 webpage on California Snow Surveys Website and Water Supply webpage on CDEC website.
http://cdec.water.ca.gov/snow/bulletin120/index2.html http://cdec.water.ca.gov/water_supply.html02/10/2010 - Latest Weather and Climate Newsletter:
01/29/2010 - DWR Announces Second Snow Survey Results
Manual and electronic readings today indicate that water content in California’s mountain snowpack is 115 percent of normal for the date statewide. This time last year, snow water content was 61 percent of normal statewide.
Press Release 01/29/2010 - DWR Schedules Second Snow Survey of 2009-2010 Season
The California Department of Water Resources (DWR) will conduct its second snow survey of the season at 11 a.m., Friday, January 29, 2010, near Lake Tahoe.
Press Release 12/30/2009 - 2010 Tide Forecasts Table are available now:
12/30/2009 - DWR Announces First Snow Survey Results of 2009/2010 Winter Season
The Department of Water Resources (DWR) first snow survey of the 2009/2010 winter season indicates snow water content is 85 percent of normal for the date, statewide. This time last year, snow water content was 76 percent of normal statewide.
Press Release 12/22/2009 - DWR Schedules First Snow Survey of 2009-2010 Season
The California Department of Water Resources (DWR) will conduct its first snow survey of the new winter season at 11 a.m., Wednesday, December 30, 2009.
Press Release 11/02/2009 - North Coast Preseason Flood Coordination Meeting Eureka, CA
Attention water managers, emergency responders, and managers that deal with flood preparedness and response: A Preseason Flood Coordination Meeting is being held in Eureka on November 17th to provide an overview of weather conditions, Flood Operations Center updates and other related topics. For further information, you may contact Sherry Constancio at sconstan@water.ca.gov or Wendy Stewart at wstewart@water.ca.gov :
Please click here for Agenda 10/07/2009 - Northern CA Preseason Flood Coordination Meetings are being held in the month of October at four different locations. For locations and time, see 2009 Northern CA Preseason Flood Coordination Fact Sheet. For more information, please contact Wendy Stewart at the Flood Operations Center at 916-574-2619.:
Please click here for Fact Sheet 10/01/2009 - California's Monthly Drought Update:
California Drought, An Update, September 2009 Please click here for Update Website09/21/2009 - Southern CA Preseason Flood Coordination Meetings are going on this week. For locations and time, see attached flyer:
Please click here 08/31/2009 - California's Monthly Drought Update:
California Drought, An Update, August 2009 Please click here for Update Website07/01/2009 - California's Monthly Drought Update:
California Drought, An Update, June 2009 Please click here for Update Website06/19/2009 - The Flood Operations Branch Preseason Flood Coordination Meetings:
The Flood Operations Branch is hosting Preseason Flood Coordination Meetings this fall in both Southern and Northern CA, please see attached fact sheet for locations and dates. For further information, please contact Wendy Stewart at the Flood Operations Center at 916-574-2619.
Please click here 06/10/2009 - What's New webpage has been redesigned and automated: NEW
The What's New webpage available on the CDEC Home page and located in the More Information box has been redesigned and automated and will be updated with the most recent information whenever new information or report product is posted to CDEC website in the future.
Please click here06/02/2009 - Addendum to Latest Weather and Climate Newsletter:
05/20/2009 - Delta Multi-Hazard Coordination Task Force Meeting at CalEMA on May 27, 2009
You’re invited to attend the Delta Multi-Hazard Coordination Task Force Meeting scheduled for Wednesday, May 27th from 1:00 pm to 3:00 pm at the CalEMA office at Mather, CA. For agenda items, please contact Camille Valencia at (916) 845-8523 or via email at Camille.valencia@oes.ca.gov also please click on the link below for more information:
http://calema.ca.gov/WebPage/oeswebsite.nsf/Content/5E67877D82216D49882575B70066C7F7?OpenDocument
05/11/2009 - Executive Update of Hydrologic Conditions for May 8, 2009:
A synopsis of statewide water conditions has been updated on CDEC as of May 8, 2009. This product is generally updated weekly or biweekly (sooner if hydrologic conditions warrant it ) during the wet season. Beginning about June 1, this product is updated monthly through the summer and dry fall months, unless there are significant hydrologic changes. The next anticipated update will be about Tuesday, June 9, 2009. The Executive Update of Hydrologic Conditions can be found at:
http://cdec.water.ca.gov/cgi-progs/reports/EXECSUM
05/07/2009 - Flood System Inspection Reports are now available: NEW
Please click here05/05/2009 - Major Reservoir Current Conditions Graphs NEW
The California Data Exchange Center has posted new graphs showing the current levels of California’s major reservoirs as well as levels for selected past water years. The graphs are updated automatically with the latest reservoir data.
Please click here04/30/2009 - DWR Announces Final Snow Survey Results for 2008-2009
The Department of Water Resources’ (DWR) final snow survey of the season indicates snowpack water content is 66 percent of normal for the date, statewide. Last year at this time snowpack was measured at 72 percent of normal, statewide.
Please click here Video...04/28/2009 - DWR Schedules Final Snow Survey of 2008-2009 Season
SACRAMENTO - The California Department of Water Resources (DWR) will conduct its final snow survey of the season at 11 a.m., Thursday, April 30, near Lake Tahoe.
Survey Location and Results:
Phillips Station at Highway 50 and Sierra at Tahoe Road, about 90 miles east of Sacramento, is the manual survey location. Reporters and photographers should bring snowshoes or cross-country skis and park vehicles along Highway 50. Snow depth and water content figures should be available by 1 p.m. This survey is the last of five measurements that help water supply planners estimate the amount of spring snowmelt runoff into reservoirs.
Please click here for more information 04/02/2009 - DWR Announces Fourth Snow Survey Results
The Department of Water Resources’ (DWR) fourth snow survey of the winter season indicates snowpack water content is 81 percent of normal for the date, statewide.“A below-average snowpack at this time of year, especially following two consecutive dry years is a cause for concern,” said DWR Director Lester Snow. “Our most critical storage reservoirs remain low, and we face severe water supply problems in many parts of our state. Californians must continue to save water at home and in their businesses.
Please click here Video...03/10/2009 – DWR Posts March 1, 2009 Bulletin 120: Water Conditions in California
The California Department of Water Resources (DWR) has posted the March 1, 2009 update to the Bulletin 120: Water Conditions in California. Seasonal runoff from the major snow bearing watersheds of the Sierra Nevada now ranges from 57% of average on the Tule River to 80% of average on the Mokelumne, Stanislaus, and Tuolumne Rivers. The entire bulletin is available for review at:
http://cdec.water.ca.gov/snow/bulletin120/b120mar09.pdf
03/10/2009 – DWR Posts March 1, 2009 Water Supply Indices
The California Department of Water Resources (DWR) has posted the March 1, 2009 update to the Sacramento (SVI) and San Joaquin (SJI) Water Supply Indices as well as the forecast for the Sacramento River Water Year Runoff (SRR). This forecast is based on the precipitation and flows through the end of February 2009 and is available for review at:
http://cdec.water.ca.gov/cgi-progs/iodir/wsi
03/02/2009 - DWR Announces Snow Survey Results
The Department of Water Resources' (DWR) third snow survey of the winter season indicates snow water content is 80 percent of normal for the date, statewide. Last year at this time, snowpack was 114 percent of normal, but the driest spring on record followed, resulting in a second consecutive dry water year. Daily electronic readings may be accessed at:
http://cdec.water.ca.gov/cgi-progs/snow/DLYSWEQ
Press Release...
02/23/2009 - Executive Update of Hydrologic Conditions:
A synopsis of statewide water conditions has been updated on CDEC as of February 23, 2009. This product is generally updated weekly or biweekly (sooner if hydrologic conditions warrant it ) during the wet season. Beginning about June 1, this product is updated monthly through the summer and dry fall months, unless there are significant hydrologic changes. The next anticipated update will be about Tuesday, March 10, 2009. The Executive Update of Hydrologic Conditions can be found at:
http://cdec.water.ca.gov/cgi-progs/reports/EXECSUM
02/17/2009 - DWR Schedules Third Snow Survey of 2008-2009 Season
The California Department of Water Resources (DWR) will conduct its third snow survey of the season on Monday, March 2, 2009 at 11am, at Phillips Station near Lake Tahoe. The results of this survey will impact future allocations. Snow depth and water content figures should be available by noon.
01/29/2009 - DWR Announces Snow Survey Results
The Department of Water Resources' (DWR) second snow survey of the winter season indicates snow water content is 61 percent of normal for the date, statewide. "The low precipitation in January and snowpack results from today's survey indicate California is heading for a third dry year," said DWR Director Lester Snow. "We may be at the start of the worst California drought in modern history. It's imperative for Californians to conserve water immediately at home and in their businesses."
Press Release...
Measuring Depth...
Recording Measurements...
Snow Surveyor Frank Gehrke...
Snow Course Marker...
Video...
01/26/2009 - DWR Schedules Second Snow Survey of 2008-2009 Season
The California Department of Water Resources (DWR) will conduct its second snow survey of the season at 11 a.m., Thursday, January 29, 2009, near Lake Tahoe. The results of this survey will impact future allocations. Snow depth and water content figures should be available by noon.
More Information...
12/29/2008 - DWR Announces January 2009 Snow Survey Results
The California Department of Water Resources (DWR) will conduct its first snow survey of the new winter season at 11 a.m., Tuesday, December 30, 2008, near Lake Tahoe. Reporters and photographers should take snowshoes or cross-country skis and park vehicles along Highway 50. The survey will be the first of five monthly measurements that help water supply planners estimate the amount of spring snowmelt runoff into reservoirs. (12/29/2008)
Please click here for the Press Release
ER Preseason Flood Coordination Meeting - December 2008
Attention water managers, emergency responders, and managers that deal with flood preparedness and response: A Preseason Flood Coordination Meeting is being held in Eureka on December 4th to provide an overview of weather conditions, Flood Operations Center update and other related topics. For further information, you may contact Sherry Constancio at sconstan@water.ca.gov or Wendy Stewart at wstewart@water.ca.gov.
Please click here for Agenda
Associate Meteorologist Job Opportunity - October 28, 2008
The Division of Flood Management, Hydrology and Flood Operations Office, home of the California Data Exchange Center (CDEC), is a friendly, enthusiastic, high-spirited, and sometimes geeky team of professionals dedicated to the sharing of their knowledge of the hydrology and flood systems of California. We're looking for an Associate Meteorologist to join the team.
Please click here for the exam announcement (PDF) Please click here for the link to the current exams at DWR website.
Sacramento and Stockton Preseason Flood Coordination Meeting - October 2008
Please click here for Agenda and Invitation letter
Red Bluff and Yuba City Preseason Flood Coordination Meeting - October 2008
Attention water managers, emergency responders, and managers that deal with flood preparedness and response, Preseason Flood Coordination Meetings in Red Bluff (Oct. 8th) and Yuba City (Oct. 9th) are being held to provide an overview of weather conditions, Flood Operations Center update and other related topics. Meetings will be also held the following week in Sacramento and Stockton, but have not been finalized. For further information, you may contact Wendy Stewart at wstewart@water.ca.gov
ER Preseason Flood Coordination Meeting - September 2008
Attention water managers, emergency responders, and managers that deal with flood preparedness and response, Preseason Flood Coordination Meetings in Ventura (Sept. 16th), Riverside (Sept.17th), and San Diego (Sept. 18th) are being held to provide an overview of weather conditions, Flood Operations Center update and other related topics. For further information, you may contact Wendy Stewart at wstewart@water.ca.gov
Please Click here for Agenda
California Data Exchange Center Receives Award - June 20, 2008
A Special Recognition Award was presented at the 2008 California Extreme Precipitation Symposium to the California Data Exchange Center (CDEC) for providing an invaluable data resource for water management in California for the past 25 years.
Delta ER Workshop Response to Comments document - April 10, 2008
Delta ER Workshop Response to Comments document and includes the responses by DWR to the comments received at the Delta Emergency Response Planning workshop in Courtland on April 10, 2008.
Please Click Here...
Delta Emergency Planning and Response Workshop April 10, 2008 Meeting Summary.
Please Click here for Meeting Summary
DWR Sets Final Snow Survey of 2008 Season - May 1, 2008
The fifth and final snow survey of the 2008 winter season by DWR will take place at 11 a.m. Thursday, May 1, 2008, at Phillips Station, Highway 50 and Sierra at Tahoe Road (about 90 miles east of Sacramento) near Lake Tahoe. (04/15/2008)
News Release...
Delta Emergency Planning and Response Workshop April 10, 2008 Meeting Summary.
Please Click here for Meeting Summary
DWR Sets Final Snow Survey of 2008 Season
The fifth and final snow survey of the 2008 winter season by DWR will take place at 11 a.m. Thursday, May 1, 2008, at Phillips Station, Highway 50 and Sierra at Tahoe Road (about 90 miles east of Sacramento) near Lake Tahoe. (04/15/2008)
News Release...
Delta Emergency Response Planning Open House
DWR, in conjunction with OES, the U.S. Army Corps of Engineers, the Delta Protection Commission, and local Delta emergency response groups will be having a public open house to discuss emergency Delta planning on April 10, 4-6 p.m. in Courtland. (04/09/2008)
Meeting Notice...
Delta ER Workshop
You are invited to participate in an upcoming workshop to discuss proposed Delta emergency response and operations plans.
Please Click Here...
DWR Snow Survey March 26
DWR's fourth 2008 winter snow survey will take place at 11 a.m. Wednesday, March 26, 2008, near Lake Tahoe. Monthly measurements are made through May to help forecast the amount of spring runoff into reservoirs. The fourth survey is generally considered to be the most important in gauging how much water is being held in the Sierra snow pack. (03/17/2008)
News Release...
The results of the media snow course measurement today (02/28/08):
Phillips Station depth is 86.1," water content 33.7." 136 percent of long-term average.
DWR Announces Snow Survey Results, Limits on Delta Pumping Go in Effect
Results of today's snow survey by DWR show Sierra snowpack conditions at 118 percent of normal for this time of year. While this would normally be a positive indication that the state's water supply is in good shape, DWR also announced that it will need to further reduce Delta pumping starting today to comply with a federal court order limiting water exports. (02/28/2008)
News Release...
News Release...
FloodSAFE Initiatives and Interim Organizational Adjustments
Please see the linked memo for information on recent activities and future direction of the FloodSAFE program. (02/21/2008)
Memorandum... 
The Bulletin 120
The Bulletin 120 Water Supply forecast and the Water Year Type Index forecasts for the Sacramento River Region and the San Joaquin River region have been calculated for conditions on February 1, 2008. They can be viewed at:
http://cdec.water.ca.gov/cgi-progs/iodir/WSI http://cdec.water.ca.gov/cgi-progs/iodir/B120
DWR Announces January 31, 2008 Snow Survey Results
Results of the January 31, 2008, snow survey by the California Department of Water Resources off Highway 50 near Echo Summit. (02/04/2008)
News Release...
Video...
Governor Breaks Ground for Improved Flood Protection
Governor Schwarzenegger, Secretary of the Interior Dirk Kempthorne and Director Lester Snow participated in a ceremonial groundbreaking of the Folsom Dam Joint Federal project, which will double flood protection for the Sacramento region. See photos, video and the Governor's Office Press Release. (01/14/2008)
Press Release...
Photo...
Photo...
Video...
Strategic Growth Plan 2008 -- Water
Governor Schwarzenegger released his Strategic Growth Plan for 2008 continuing his commitment to rebuilding California's infrastructure. The Flood Control & Water Supply Conveyance portion of the SGP details the proposed $11.9 billion bond measure that will provide funding for storage and conveyance. (01/14/2008)
SGP -- Water
DWR Announces Snow Survey Results
Results of the January 3, 2008, snow survey by the California Department of Water Resources off Highway 50 near Echo Summit are as follow: (01/03/2008)
News Release...
New CDEC Website Design
Coming in November, the California Data Exchange Center will launch a new website using the State of California's new web portal design standards. The new standards
were developed to provide a user-friendly gateway for citizens, agencies, businesses, and the media to access government services. The CDEC staff is excited about the
updated look and functionality of the new website. The major change has been the organization of web pages, most of the tools and links that are accessed within the existing CDEC website will still function as they currently do.
Here are a few new features:
- Subject category tabs to allow more flexible access to tools and links.
- Addition of left sidebar navigation for easy access to popular links.
- Enhanced data plotting.
- Announcements box in the Home page contents area with a vertical scrollbar to cover all messages and announcements from most current to the past.
If you have any questions, please contact CDEC staff using the e-mail address Webmaster The CDEC team appreciates your continued support.
Director Snow Commends DWR Staff for Working On New Flood Legislation
DWR Director Lester Snow today commended DWR staffers who worked on significant flood legislation signed into law by Governor Schwarzenegger on October 10. (10/15/2007)
News Release...
DWR, California Enter New Water Year
Today (October 1) is the beginning of the 2007-2008 water year which will last until September 30, 2008. (10/01/2007)
News Release...
The flood alert initiated on September 21st at 08:00 hours has been rescinded as of September 24 at 08:00 hours. High rainfall predicted over the Zaca Fire burn area this past weekend did not materialize. (09/24/2007)
Memorandum
Flood Alert
A flood alert has been declared, beginning September 21st and 08:00 hours. (09/20/2007)
Memorandum
CALIFORNIA FLOOD DAY -- Tuesday, August 28, 2007
California Flood Day coincides with First Responders Day at the California State Fair. Guest researchers, new presentations, and video displays will focus on California's vulnerability to flooding. (08/27/2007).
News Release
05/06 High Water Events - Draft After Action Report Now Available for Review and Comment
This report is a two-part review and analysis of DWR's emergency response to the 2005-06 Storms and subsequent flood-related issues. It serves as a planning document to improve DWR's flood emergency response readiness. To help ensure completeness and accuracy, event participants are encouraged to review the draft report and email written comments to sconstan@water.ca.gov by April 13th. (03/29/2007).
Report
National Flood Safety Awareness Week
Sacramento: The National Weather Service's Sacramento Office will hold a press briefing at 10 A.M. on Thursday, March 22 in conjunction with National Flood Safety Awareness Week. Representatives from California-Nevada River Forecast Center and the State of California's Department of Water Resources will highlight flood preparedness efforts, warning procedures and current water storage status. Following brief comments on flood safety awareness, local, state, and federal agency representatives will be available to answer questions about flood management. For more information please click on the following link:
http://www.floodsafety.noaa.gov/
DWR Oroville Dam on Modern Marvels
The History Channel, Modern Marvels, will feature the Oroville Dam on March 28 at 10:00 p.m. (03/27/2007).
Promotional Photograph...
Tide Data Reporting, DWR & National Weather Service
Commencing on October 1, 2006 DWR will change from reporting all tide data collected at 44 locations in the Sacramento-San Joaquin Delta and Suisun March from National Geodetic Vertical Datum 1929 (NGVD29) to the North American Vertical Datum 1988 (NAVD88) standard (09/21/2006). For more information please click on the following link:
More
October 2006 Datum Change Information
On October 1, 2006, the California Department of Water Resources(DWR) will change the reporting of all tide data collected at 44 locations in the Sacramento-San Joaquin Delta and Suisun Marsh from National Geodetic Vertical Datum 1929 (NGVD29) to the North American Vertical Datum 1988 (NAVD88) standard. Tide stage forecasts for four delta locations (Rio Vista, Antioch, Mallard Island and Venice Island) and river stage forecasts for three river forecast points (Mokelumne River at Bensons Ferry near Thornton, San Joaquin River at Mossdale Bridge, and Yolo Bypass at Lisbon) will be displayed in NGVD29 datum until October 1, 2006...where it will then be displayed as NAVD88. The change to NAVD88 will affect the monitor stage and flood stage at four locations. For more information please click on the following link:
More...