5/11/2015 - Middle Ranch Reservoir Water Level

The Middle Ranch Reservoir, also known as Thompson’s Reservoir, is the main gauge for assessing the fresh water supply conditions for Santa Catalina Island.

The measured water level triggers the different stages of water conservation and rationing as laid out in the Schedule 14.1 tariffs.  For more information regarding water on Catalina visit www.sce.com/catalina.

For more information on the general Catalina water rules and rates see the Santa Catalina Island Water Tariffs page.

If you have any general questions, a dedicated Catalina customer service representative can assist you at 1-800-367-8851 (Monday through Friday 8:00 a.m. to 5:00 p.m.).
– Report potential water use violations

1 acre foot = 325,851 gallons

Middle Ranch Reservoir Capacity (approximate) and tariff stage levels:

1149 Acre Feet  Approximate total Capacity

600 Acre Feet    Stage 1 Mandatory Water Conservation

300 Acre Feet   Stage 2 Mandatory Water Rationing (click link for Fact Sheet)25% use reduction compared to baseline year

200 Acre Feet    Stage 3** 50% use reduction compared to baseline year (click link for Fact Sheet)

50 Acre Feet      Stage 4 75% use reduction compared to baseline year

The Baseline Year is June 2012 - May 2013 

*Starting approximately March 7, 2017 Catalina Island is in Stage 1 water rationing
*From February 7, 2017 to March 6, 2017 Stage 3 Water Rationing Updated:Avalon and Middle Ranch 25% rationing, rest of the island 50%
*From September 6, 2016 to February 6, 2017 Catalina Island was in Stage 3 Water Rationing*
*From August 11, 2014 to September 5, 2016 Catalina Island was in Stage 2 Water Rationing*

**Due to the arrival of the second desalination unit Stage 3 rationing was delayed should the Middle Ranch Reservoir drop below 200 acre-feet prior to the peak 2016 summer season.**

March 7, 2017 SCE Announcement update on Stage 1 Rationing.

Read the SCE Announcement on the Stage 2 rationing beginning February 7, 2017

Watch the Public Meeting from August 24, 2016 on Stage 3

See SCE's request to delay implementation to the CPUC

Read about the arrival of the new desalination unit, the immediate potential benefits, the partnership that made it happen.

See the City's September 20, 2016 presentation on freshwater solution options, and the engineering assessment letter.

Watch the SCE presentation on Desalination at the April 18, 2017 City Council Meeting. View the power point slides here.

View the Catalina Island Water tariffs informational meeting on July 21, 2015 with Southern California Edison, the California Public Utilities Commission and the City of Avalon.

Check the weather throughout Catalina Island - including the amount of rain.

Current Middle Ranch Reservoir Level    SCE Updates to Council   Percent Change
Date (Acre Feet) Feet Above Sea Level  Date   Stage  Month % Savings  12 Month % Savings  from baseline 12 Month % Visitor Count change 
November 28, 2017 726 657.4          
November 13, 2017 726 657.42          
November 9, 2017 726            
October 2017     October 2017
       
September 19, 2017 733 657.6 September 2017
       
August 24, 2017 734  657.62          
August 8, 2017 736 657.6 August 2017 
       
July 13, 2017 729 657.5  July 2017 
   -5.49%

 41.35%

29.44%
July 7, 2017 729  657.5    
June 29, 2017 725 657.4 June 2017 
   33.33%  38.64% 29.69%
June 22, 2017 724 657.3    
June 15, 2017 716  657.1    
June 8, 2017 710 657.0    
June 1, 2017 704 656.7    
May 25, 2017 692 656.4  June 20, 2017
 1  37.37%  41.43%  +29%
May 18, 2017 684 656.2    
May 11, 2017 673 655.9    
May 4, 2017 657 655.5 May 16, 2017   
April 27, 2017 646 655.2          
April 20, 2017 634 654.9 April 18, 2017
       
April 13, 2017 619 654.5          
April 6, 2017 604 654.1          
March 30, 2017 589 653.7     45.57%     
March 23, 2017 571 653.2        
March 16, 2017 556 652.8 March 21, 2017       
March 9, 2017 538 652.3
     
March 7, 2017     Stage 1 Conservation Begins       
March 2, 2017 524 651.9        
February 23, 2017 507 651.4

43.03%   49.23% +62% 
February 16, 2017 292 643.7 February 21, 2017   
February 9, 2017 287 643.5    
February 7, 2017      25% Rationing for Avalon  
February 2, 2017 283 643.3    
January 26, 2017 283 643.3     46.73% 50.31% +45%
January 19, 2017 137 636.0    
January 12, 2017 133 635.8 January 17, 2017 
January 5, 2017 131 635.7    
December 30, 2016 129 635.6     41.97%    
December 22, 2016 127 635.5    
December 16, 2016 123 635.3    
December 8, 2016 123 635.3    
December 1, 2016 123 635.3    
November 23, 2016 123 635.3    
November 17, 2016 121 635.2 November 15, 2016 
3      
November 3, 2016 123 635.3          
October 27, 2016 125 635.4      58.57% 44%   
October 21, 2016 125 635.4 October 18, 2016   
October 13, 2016 127 635.5      
October 6, 2016 127 635.5      
September 29, 2016 131 635.7      32.95%  40.59%   +26%
September 22, 2016 133 635.8 September 20, 2016 
3
September 15, 2016 135 635.850    
September 8, 2016 137 635.957   
September 6, 2016     Stage 3 Rationing Begins  3
September 1, 2016 139 636.1    
August 25, 2016 141 636.2     37.12% 40.32% +27%
August 18, 2016 145 636.4 August 16, 2016
August 11, 2016 147 636.5    
August 4, 2016 151      
July 28, 2016 153 636.8     28.62%  41.62% +27%
July 21, 2016 157 657.0 July 19, 2016  2
July 14, 2016 161 673.2    
July 7, 2016 163 637.3    
June 28, 2016 167 637.5      33.4% 41.6%   +26%
June 23, 2016 169 637.6    
June 16, 2016 171 637.7 June 21, 2016 
June 10, 2016 175 637.9     
June 2, 2016 177 637.984    
May 26, 2016 179 638.069       47.4% 42.5%   +26.5%
May 19, 2016 181 638.190  May 17, 2016
May 12, 2016 183      
May 5, 2016 183      
April 28, 2016 185        35.8% 42.6%  +26.2%
April 21, 2016 187   April 19, 2016
2
April 14, 2016 189      
April 7, 2016 191      
March 31, 2016 191        34.8% 42.8% +27.4%
March 25, 2016 193      
March 17, 2016 195 639.913  March 15, 2016 
 2
March 10, 2016 195      
March 3, 2016 195      
February 25, 2016 195       36.4%  43.2%  +28.7% 
February 18, 2016 197      
February 11, 2016 197   February 16, 2016 
 2
February 5, 2016 199      
January 28, 2016 199       40.43%   42.82%  
January 21, 2016 199 639.130       
January 7, 2016 199 639.132       
December 23, 2015 199 639.109      35.72%   42.93%  
December 17, 2015 199 639.114   December 15, 2015  2**  
December 10, 2015 201        
December 3, 2015 201        
November 19, 2015 205        31.22% 31.69%  
November 12, 2015 207   November 17, 2015 2  
November 5, 2015 209    
 
October 29, 2015 211        48.29% 41.80%  
October 22, 2015 211        
October 15, 2015 215   October 20, 2015  2  
October 1, 2015 217        
September 24, 2015 219       29.92% 40.67%  
September 17, 2015 223        
September 10, 2015 223   September 15, 2015
2  
September 3, 2015 225        
August 27, 2015 227     2  48.06% 40.12%   
August 20, 2015 229        
August 13, 2015 231   August 18, 2015  2  
August 6, 2015  233         
July 30, 2015 235            
July 23, 2015 239   July 21, 2015
     
July 16, 2015 239  

     
July 9, 2015 241   July 7, 2015       
July 1, 2015 243  
       
June 25, 2015 245       37.77% 

34.23%

 
June 18, 2015 247        
June 11, 2015 249   June 16, 2015 
2  
June 4, 2015 251        
May 28, 2015 253       30.48%  33.86%  
May 21, 2015 255        
May 14, 2015 257   May 19, 2015
2  
May 7, 2015 257  

 
April 30, 2015 259  

 39.51% 34.18%   
April 24, 2015 259  

 
April 16, 2015 261   April 21, 2015    2  
April 9, 2015 265        
April 2, 2015 267        
March 26, 2015 269        30.49%  33.50%  
March 19, 2015 271        
March 12, 2015 273        
March 5, 2015 275        
Feb. 26, 2015 275            
Feb. 19, 2015  275     February 17, 2015
     
Feb. 12, 2015 277    
     
Feb. 5, 2015 277            
Jan. 29, 2015 277        8.33%  34.08%  
Jan. 22, 2015 277        
Jan. 15, 2015 277        
Jan. 7, 2015 275        
Dec. 30, 2014 277            
Dec. 24, 2014 279            
Dec. 18, 2014 279            
Dec. 11, 2014 275            
Dec. 4, 2014 275            
Nov. 27, 2014 n/a            
Nov. 20, 2014 273            
Nov. 13, 2014 275            
Nov. 6, 2014 277            
Oct. 30, 2014 277            
Oct. 23, 2014 277            
Oct. 16, 2014 277            
Oct. 9, 2014 279            
Oct. 2, 2014 283            
Sept. 25, 2014 283            
Sept. 17, 2014 285            
Sept. 11, 2014 n/a            
Sept. 4, 2014 292            
Aug. 29, 2014 289            
Aug. 22, 2014 289            
Aug. 14, 2014 307            
Aug. 11, 2014     Stage 2 Rationing Begins 2      
Aug. 7, 2014 311      1       
July 31, 2014 316            
July 24, 2014 318            
July 17, 2014 323            
July 3, 2014 330            
June 25, 2014 337            
June 19, 2014 342            
June 12, 2014 344            
June 5, 2014 350            
May 28, 2014 355            
May 22, 2014 358    Presentation to Council begins at 2:28:00    
May 15, 2014 363            
May 9, 2014 366            
May 1, 2014 371            
April 24, 2014 377            
April 17, 2014 379            
April 10, 2014 385            
April 2, 2014 388            
March 27, 2014 391            
March 17, 2014 394            
March 14, 2014 394            
March 3, 2014 394            
Feb. 27, 2014 391            
Feb. 20, 2014 391            
Feb. 14, 2014 394            
Feb. 7, 2014 394            
Jan. 30, 2014 394            
Jan. 24, 2014 394            
Jan. 16, 2014 394            
Jan. 9, 2014 396            
Jan. 2, 2014 396            
Dec. 26, 2013 399            
Dec. 18, 2013 399            
Dec. 12, 2013 399            
Dec. 5, 2013 402            
Nov. 26, 2013 399            
Nov. 20, 2013 399            
Nov. 14, 2013 402            
Nov. 7, 2013 405            
Oct. 31, 2013 405            
Oct. 24, 2013 411            
Oct. 17, 2013 414            
Oct. 10, 2013 417            
Oct. 3, 2013 420            
Sept. 26, 2013 426            
Sept. 12, 2013 435            
Sept. 5, 2013 442            
Aug. 28, 2013 448            
Aug. 22, 2013 451            
Aug. 15, 2013 460            
Aug. 8, 2013 467            
Aug. 1, 2013 483            
July 25, 2013 483            
July 18, 2013 494            
July 11, 2013 503            
July 3, 2013 514            
June 27, 2013 520            
June 20, 2013 527            
June 13, 2013 535            
June 6, 2013 542            
May 30, 2013 553            
May 23, 2013 563            
May 16, 2013 574            
May 7, 2013 582            
May 3, 2013 582            
April 25, 2013 589    
     
April 11, 2013 604            
March 28, 2013 615            
March 21, 2013 623            
March 12, 2013 630            
March 8, 2013 634            
Feb. 28, 2013 638            
Feb. 14, 2013 646            
Jan. 18, 2013 657