Welcome Information Center CIMIS Data Resource Center My CIMIS Spatial CIMIS
California - The Golden State
Graphic of a CIMIS station in a field
 
California Home Page Governor's Home Page
System News
Station #21 Kettleman has been shut down until the phone line is repaired.
March 18, 2014
Station #21 Kettleman has been shut down until the phone line is repaired.
A new CIMIS Station #213 El Cerrito.
December 09, 2013
A new CIMIS Station #213 El Cerrito, in the East Bay, in El Cerrito itself, has been added to the CIMIS network. It was activated on 9/24/13.
Station #92 Kesterson has been repaired and the data is now available.
December 06, 2013
Station #92 Kesterson has been repaired and the data is now available.
CIMIS Station #134 Barstow is shutdown and removed.
November 14, 2013
CIMIS Station #134 Barstow has been shutdown and removed from the site to make way for construction. Historical data is available on the website.
CIMIS Station #5 Shafter/USDA disconnected
September 17, 2013
Station #5 Shafter has been reconnected to the CIMIS network under new ownership. Note - the past year of data has not been collected.
Station #149 Oakland Foothills has been removed from the CIMIS network.
August 14, 2013
Station #149 Oakland Foothills has been removed from the CIMIS network. Historical data is still available on the website.
Station #144 Petaluma East is now reconnected to the CIMIS network.
July 17, 2013
Station #144 Petaluma East is now reconnected to the CIMIS network and data is available on the website.
A new Station, #214, has been added to the CIMIS network
June 05, 2013
A new Station, #214 Salinas South II, has been added to the CIMIS network. It is a similar location to the recently inactive #89 Salinas South station.
Station #240 added to the network.
June 05, 2013
On May 25th, 2013 a new station, #240, in between Perris and Menifee Valleys, Riverside County, was added to the CIMIS network.
Station #238 has been added to the CIMIS network
April 29, 2013
On April 19, 2013 a new station, #238, in Moreno Valley, Riverside County was added to the CIMIS network.
CIMIS Station #145 Madera is now Station #188 Madera II
April 05, 2013
The CIMIS Station #145 Madera has been relocated, with a new number and designation, #188 Madera II. The new station is sited in a borderstrip irrigated pasture. The station is located 2 miles east of the old #145 Madera location. The historical data from #145 is still available, by checking the Inactive Stations selection on the CIMIS DATA menu page.
Station #166 Lodi West is now an ETr station.
March 06, 2013
Station #166 Lodi West is now an ETr station as of 3/6/13. The alfalfa around the station is established and growing well enough to provide reference ET.
New Station #224
February 27, 2013
A new station #224, near Redding in Shasta County has been added to the CIMIS network.
Station #103 Windsor is now a non-ETo station
February 01, 2013
The status of Station #103 Windsor has been changed to a non-ETo station. The station status will be changed if the grassed area surrounding the station is restored or the station is relocated to a better site nearby.
New CIMIS Station #235 Verona
October 02, 2012
A new Station #235 Verona, near Nicolaus in Sutter County, has been added to the CIMIS network.
New Non-ETo CIMIS Station #233 Joshua Tree
October 01, 2012
Data from a new Non-ETo CIMIS Station, #233 Joshua Tree, is now available. The station is in the Morongo Valley, near Copper Mountain College, in San Bernardino County.
Station #89 Salinas South has been shut down and removed.
September 27, 2012
Station #89 Salinas South has been shut down and removed. Archived data is available on the Inactive Stations list. A replacement station is planned.
Salton Sea West #127 is now inactive and disconnected.
September 19, 2012
Salton Sea West #127 has been listed as inactive and is disconnected - it has been vandalized.
Station #193 Pacific Grove
January 04, 2012
A new Station, #193 Pacific Grove, in the Monterey Bay area, has been added to the CIMIS network.
Station #30 Nicolaus Discontinued
December 27, 2011
After 29 years, the Nicolaus CIMIS station #30 will be discontinued due to changing land use. We regret any inconvenience. This CIMIS station has been a great resource and will continue to be an excellent source of historical data. The site’s evaporation pan is discontinued as well. We are actively seeking an alternative location for a CIMIS station in the same area. If you know of a possible site, please contact CIMIS Headquarters or Jan Carey at the North Central Region Office. http://wwwcimis.water.ca.gov/cimis/welcomeStaff.jsp
Spatial CIMIS Data
December 08, 2011
On 12/06/2011, NOAA switched the GOES satellite that CIMIS is using to derive Spatial CIMIS ETo. In the process, we suspect that the data for 12/06/11 and 12/07/11 may have errors. We are working on fixing the potentially erroneous data for those two days and verifying the accuracy of data from the new GOES satellite. We will post a follow-up notice once the issue is resolved.
CIMIS Station #190, Five Points South West
November 23, 2011
CIMIS Station #190, Five Points South West, will now be a non-ETo station.
Station #215 Chatsworth
October 31, 2011
A new Station #215 Chatsworth, in the Los Angeles area has been added to the CIMIS network.
Station #216 Arleta
October 31, 2011
A new Station #216 Arleta, in the Los Angeles area, has been added to the CIMIS network.
Station #219 West Hills
October 31, 2011
A new Station #219 West Hills, in the Los Angeles area, has been added to the CIMIS network.
Temecula East #137 disconnected
October 12, 2011
Temecula East #137 has been listed as inactive and disconnected - it has been stolen.
New station in the Sierra Foothills, Diamond Springs #228.
April 18, 2011
November 2010. CIMIS has a new ETo station near Diamond Springs in the beautiful Sierra Foothills south of Placerville. DWR has partnered with Walker Vineyard and the El Dorado Irrigation District to install this station on irrigated grass adjacent to an irrigated vineyard. It is a welcome addition to the CIMIS system and will supply much needed data for area growers, landscapers, and agencies.
New Sierra Foothills station, Plymouth #227
April 18, 2011
November 2010. CIMIS added a new ETo station in the lovely Shenandoah Valley of the Amador County Sierra Foothills. DWR has partnered with the Trinchero Family Estates to install this station on irrigated grass adjacent to an irrigated vineyard. It is welcome addition to the CIMIS system and will expand the scope of data collection in this important agricultural area.
Hastings Tract Station #122 is now Hastings Tract East #212.
March 01, 2011
September 2010. The Hastings Tract station #122 has been relocated and has a new designation, Hastings Tract East #212. The Solano Irrigation District is partnering with DWR to bring ETo data from the Sacramento/San Joaquin Delta Region in Solano County. The station is sited on an irrigated grass plot surrounded by native grasses on a hunting reserve adjacent to irrigated cropland.
Station #123 Suisun Valley Removed
July 13, 2010
The Suisun Valley CIMIS station has been discontinued due to encroaching development and changing land use. This station was located on the Solano Community College Campus. The Suisun Valley station was well maintained by the staff of the Solano Irrigation District since 1994 in cooperation with DWR and will be an excellent source of historical data for the region.
Station #61 Orland Removed from Service
June 28, 2010
The Orland CIMIS weather station has been removed from service as of May 27, 2010. The land has changed hands and the new owner will be transitioning to an orchard crop. The Orland CIMIS weather station was in service for 23 years.
Stn 159 Monrovia Communication Problem
May 26, 2010
We are experiencing communication problems with station 159 (Monrovia). Data will be restored as soon as possible.
Stn 186 UC San Luis Communication Problem
May 26, 2010
We are experiencing communication problems with station 186 UC San Luis. Data will be restored as soon as possible.
New Station (#211) in Gilroy.
October 13, 2009
A new CIMIS ETo station has been established in Gilroy. The station is located at the Syngenta Seeds Inc. Gilroy research site on a well maintained grass area surrounded by annual crops. It is a welcome addition to the system and will provide much needed information to area growers, landscapers, planners, and researchers.
Station #47, Brentwood, is Back.
October 13, 2009
Station #47 has been rebuilt at the original location and current data is available. DWR and the Contra Costa Resource Conservation District have rebuilt the station after it had been vandalized earlier this year. The station was established in 1985 and historical data, except data lost since it was vandalized, is also available.
ETo Maps
September 10, 2009
The much anticipated daily average ETo map that CIMIS has been working on for a long period of time has been released to the public on September 9, 2009. The data covers the entire State of California and can be retrieved by selecting points or using zip codes. Information and data can be obtained by clicking on the "Spatial CIMIS" tab from the CIMIS Home Page.
Hastings Tract (#122) has been discontinued.
June 16, 2009
Station #122 Hastings Tract has been discontinued as of June 10, 2009. It will be moved to a site east of the current location. Look for the new station location on Hastings Island in the Summer of 2009.
Station #47 Brentwood Disconnected
March 03, 2009
This station will be discontinued at the current location because vandals have severely damaged the CIMIS equipment. We are actively seeking an alternative site in this area. If you have a suggestion, please contact Jan Carey at (916)376-9630 or jcarey@water.ca.gov. We regret any inconvenience. The Brentwood station was established in 1985 and is an excellent source of historical archived data.
Station #132 Morgan Hill has been discontinued
January 26, 2009
Station #132 Morgan Hill has been discontinued as of May 2008. Look for a new station to be installed in that area in the Fall of 2009.
Station #176 (La Quinta) Disconnected
June 15, 2007
Station 176, La Quinta, was removed from service on October 3, 2006 due to land use changes. The station has been in service since November of 2000 serving the Riverside Area. The property owner wanted to put the land to a different use and the weather station equipment has been removed. Coachella Valley Water District (cooperator) is currently looking for a new location to place the equipment. We will annonce as soon as that is know.
Station #27 (Zamora) disconnected
August 22, 2006
Station #27 was disconnected on 11 May 2006, after more than two decades of continuous recordings. Zamora has been located in a pasture and is now being discontinued because the land is being replanted in almonds. Zamora was established on 5 December 1982, and is an excellent example of station longevity.
#177 Watsonville West
May 17, 2006
The Watsonville West #177 station has been disconnected from the network for an undetermined time. This was due to land use changes and the loss of use of the site. We regret any inconvenience this may cause and we hope the new site will be ready shortly to reinsatll the station.
New Station #198 Santa Paula
March 27, 2006
A new standardized CIMIS ETo station #198 Santa Paula is being sponsored by the University of CA. Santa Paula is located at the western portion of the Santa Clara River Valley which has a mixture of urban and agricultural areas. Primary crops consist of mostly lemon and avocado trees and some mixed vegetable row crops.
Station Problems 12/15/05
December 15, 2005
Stations 88, 144, 171, & 192 are experiencing communication difficulties. Station 135 appears to have a failed pyranometer. Stations 106 & 137 are experiencing severe anemometer problems. Station 182 had battery problems which caused some hourly data to go missing between Dec 2 - 14. This problem has been resolved and the other problems we are working on. We apologize for any inconvenience this may have caused.
New Station #199 Big Bear Lake
September 26, 2005
City of Big Bear Lake water and Power is sponsoring a new standardized CIMIS ETo station. City of Big Bear Lake is located high in the San Bernardino Mountains on the south western portion of the San Bernardino County. City of Big Bear Lake has become an urban center for the people that have come to enjoy the many recreational activities that are available to them in both the winter and summer months.
New station #195
May 12, 2005
Located Southwest of Auburn near Newcastle, California, there is an old Victorian farmhouse, affectionately referred to as the Heritage Center. In the yard surrounding this home there is an ample plot of grass, which is the location of Station #195, Auburn. This station is owned and operated by the Placer County Water Agency (PCWA), and was added to our network in February 2005. This station will add coverage to the Sierra foothills for this well established agricultural area that is rapidly developing. The CIMIS station is a part of the PCWA heritage and learning center, which will demonstrate the benefits of ETo based irrigation scheduling. A plan was discussed to add additional instrumentation inside the center, where real time weather data can be monitored. This station makes a nice addition to the network, as it assists the local residents including agricultural and landscape water users, farm advisors, and other irrigation specialists in their efforts to manage the water resources.
Piru (#101) removed
March 08, 2005
The Piru station (#101) has been removed from the CIMIS network because the station was destroyed by the recent flooding in Southern California. CIMIS staff is in discussion with the United Water Conservation District regarding the possiblity of replacing the station. We will post further information as it becomes available.
New Station #194
December 14, 2004
CIMIS weather station #194 Oakdale was recently installed by San Joaquin District staff with assistance from Office of Water Use Efficiency staff and Oakdale Irrigation District personnel. The new CIMIS weather station is located in an irrigated pasture near the intersection of Albers and Claribel Rds., about one mile south of the city of Oakdale. Installation occurred on November 2, 2004. This weather station will serve an area not currently covered in the CIMIS network and is the 38th CIMIS station in the San Joaquin District. Climatological data collected by the station and reference ETo computed will be used by local farmers, landscape managers and others in scheduling irrigations for their crops, irrigated landscapes and related work and investigations.
Station #62 back on line!
August 09, 2004
The Rancho California Water District was working on fixing the power supply problem and anticipates to have the station reporting in a couple of weeks. If you have any quetions about utilizing another stations data to replace station #62 missing data please contact Sergio Fierro at 818-543-4652. We appologize for the inconvienence.
New Station #192
April 28, 2004
Activated On March 20, 2004 - the Station is a standard ETo station with a reference surface of grass.
New Station # 190
December 17, 2003
CIMIS weather station #190 Five Points South West was installed on July 2, 2003. The CIMIS weather station is located in a parcel of irrigated grass in the middle of a large farming operation southwest of Five Points in Fresno County. This weather station is on the site of the Red Rock Ranch Integrated On-Farm Drainage Management Demonstration Project. Installation at this site was requested by the San Joaquin District Integrated Drainage Management Section to help in their efforts to deal with on-farm drainage problems in the local area. Climatological data collected by the station will be used by local farmers to accurately schedule crop irrigation needs using evapotranspiration based data and in the various ongoing on-farm drainage activities at the Red Rock Ranch.
Station #49 Disconnected
December 17, 2003
Station #49 (Oceanside) has been disconnected from the CIMIS network as of October 29, 2003 due to site requirements not being met. The Oceanside public golf course where the station was located did not have the intentions of maintaining or reestablishing the prescribed site requirements necessary to have a CIMIS station generating reliable ETo values. There are no plans in the future to reestablish a CIMIS station in the region at this time.
New Station #187
August 06, 2003
The new station Black Point #187 is replacing a station that had previously gone off line recently in the same region of Marin County.
#30 ETo Turned on
August 01, 2003
ETo will again be posted for CIMIS weather station #30, Nicolaus, in Sutter County. ETo for Nicolaus was "turned off" in the Fall of 2001 due to land use changes. The landowner has renewed the pasture and the siting conditions are once again in substantial compliance with the CIMIS weather station siting requirements for the estimation of ETo.
New Station, #189
May 09, 2003
Owens Lake South, CIMIS weather station #189, began collecting data on April 1, 2003. CIMIS station #189 is located near Cartago, California within the Southern portion of Owens Lake basin. Station #189 is owned by Los Angeles Department of Water and Power. Plans are for the data from this weather station to be used to estimate evapotranspiration. At this time #189 is a Non-ETo station due to siting constraints. As soon as the surroundings substantially meets CIMIS siting criteria ETo will be estimated.
Change in ETo status
May 01, 2003
As of May 1, 2003, CIMIS weather station #111, Green Valley Road will be a non-ETo weather station. The siting conditions surrounding the weather station have degraded to the point that estimation of ETo is not reasonable. This situation will change if and when the cooperator returns the siting conditions to substantial compliance with the DWR/CIMIS siting requirements. All other weather data will continue to be posted as before.
QC change
December 20, 2007
Otay #147 monthly and daily averages were cloned to CIMIS station #51 thus significantly changing the ETo normal year averages.
IMPORTANT - Sta. 182
December 16, 2005
The entire record of Hourly solar radiation mean from the Delano CIMIS weather station is incorrect. The Daily solar radiation mean found in the database for Delano is erroneous for the period from 3/21/2002 to 5/20/2002. To convert the Daily solar radiation mean for this period, multiply the Daily value found in the database by 0.4755. An incorrect multiplier was used for the solar pyranometer upon installation. The telephone line used to interrogate the data logger was not available until mid-May, 2002. Once the erroneous multiplier was found, the correct multiplier was inserted in the data logger and the Hourly solar radiation values were corrected in the database. We apologize for any inconvenience.
Station#183 QC Change
September 21, 2004
On 8/18/03 the cloud cover was left cloned to station #35 Bishop but the Monthly ETo and Daily QC were cloned to station #55 Palm Desert. On 9/29/03 the Monthly ETo & Daily QC was cloned to Seely #68. On 12/02/03 Monthly ETo & QC were reclonned to match those of Station #35. On 7/30/04 changed mo & daily QC from #55 to #68 in DB only. On 9/20/04 clonned to #35.
Station #189 QC Changed
September 21, 2004
On 8/18/03 station #189 Monthly ETo and Daily QC were cloned to station #55 Palm Desert. Cloud cover remained cloned to station #35 Bishop. On 9/29/03 the Monthly ETo & Daily QC was changed to Seely #68. On 12/02/03 Monthly ETo & QC were reclonned to match those of Station #35. On 7/30/04 changed mo & daily QC from #55 to #68 in DB only. On 9/20/04 clonned to #35.
Station #185 Temp. Disc.
November 13, 2003
Station 185, UC-Mex, has been temporarily discontinued due to consistant cellular telecommunication problems. If the cooperator is able to resolve the situation, the station will be brought back on-line. At this time it is not known when and if the station will return to the network.
New Station - 182
May 09, 2003
The Delano Earlimart Irrigation District is cooperating in sponsoring a new CIMIS weather station. The new station will represent the region surrounding the Delano Earlimart Irrigation District Offices. This new station fills a data gap that has existed in this region since the removal of the McFarland CIMIS weather station (#031). The Delano CIMIS weather station began reporting in March of 2002.
New station - 168
May 09, 2003
The Turlock Irrigation District is cooperating in sponsoring a new CIMIS weather station. The new station, located East of Denair, will fill a data gap for the region. The Denair CIMIS weather station began reporting in August of 2002.
Station #172 Relocated
April 28, 2004
CIMIS weather station #172 Lost Hills Northwest was taken out of service on July 1, 2003. The station was a non-ETo reporting station and the data being collected was no longer of interest to the cooperator and DWR. The equipment was subsequently moved to the Red Rock Ranch Integrated On-Farm Drainage Management Demonstration Project.
Station #154 Disconnected
October 07, 2004
Due to prolonged inactivity station 154 has been terminated as of 10/7/04. Station #154 (Salton Sea North) was to be disconnected from the CIMIS network for a period of 5 months beginning October 29, 2003.
Lake Arrowhead QC change
July 14, 2004
The Lake Arrowhead #192 station QC clonning has been updated to Bishop #35 on July 13, 2004.
Station removal
August 06, 2003
Station 069, San Jose, was removed from service on November 22, 2002 due to land use changes. The San Jose CIMIS weather station had been in service since June of 1987 serving the Southern San Francisco Bay Area. The property has changed hands and the weather station equipment has been removed. Santa Clara Valley Water District (cooperator) is currently looking for a new location to place the equipment.
Name change
August 06, 2003
The ownership of the land surrounding CIMIS weather station #033, Visalia/ ICI Americas, has changed hands. As a result, the name of the station has been change to Visalia. The new landowner has agreed to continue with the cooperative agreement. Nothing else has changed and no break in data collection will occur as a result of this update.
#144 Temporarily Discontinued
May 08, 2003
On October 21, 2002 the Petaluma East CIMIS weather station suffered severe vandalism. The cooperator, City of Petaluma, has been working on obtaining the new equipment and restoring the telephone service. Plans are to move ahead with the rebuilding of the station.
New station - 183
April 14, 2003
Owens Lake North, CIMIS weather station #183, has been added to the CIMIS network. The new weather station was installed in mid-December, 2002. Los Angeles Department of Water and Power is the owner of the station. This station will be a non-ETo weather station for research purposes.
Picture of baseball field
CIMIS System Status:
The normal Maintenance window is:
Wednesday 06:00 - 08:00 PM
Register and Get Instant Access to Weather Data
Department of Water Resources Department of Water Resources
Office of Water Use Efficiency Office of Water Use Efficiency
Get Acrobat Reader Required for PDF reports
Back to Top About Us Contact Us Site Map
Conditions of Use | Privacy Policy | Comments or Suggestions?
© 2009 State of California.