Meeting Date:

March 21, 2005





David A. Berger,


Hydrologic Monitoring


General Manager

Line Item No.:     N/A


Prepared By:


Thomas Lindberg

Cost Estimate:


General Counsel Approval:  N/A

Committee Recommendation:  N/A

CEQA Compliance:  N/A




Staff has prepared a draft Water Production Summary Report of all registered production sources, i.e., wells and surface water diversions, within the District for Water Year 2004 (WY 2004).  WY 2004 covers the 12-month period from October 1, 2003 through September 30, 2004.  Preliminary computations indicate that 20,030 acre-feet of ground water were produced from registered wells in the District during WY 2004.  In addition, 53 acre-feet of surface water were diverted by private users.  Combined surface and ground water production from all sources within the District in WY 2004 is calculated to be 20,083 acre-feet.  This report presents comparisons of Cal-Am and non Cal-Am production in WY 2004 and WY 2003, and compares WY 2004 production with the District’s current water allocation limits.




This report is for informational purposes only.  The Board should review the draft summary report and provide staff with any comments or questions.  Staff will complete and file the final report, incorporating any late revisions, if this item is approved with the Consent Calendar.





Well owners and operators are required to submit annual water production information to the District.  Well production is calculated by either the Land Use or Water Meter reporting method and is described below.


Number of Wells – Presently, there are 1,016 registered wells in the District.  Of this total, 695 wells are active, and 274 wells were inactive.  A well is considered active if it has produced any water in the last reporting period, i.e., the water year.  Information on the remaining 47 registered wells is not available because reporting forms were not returned by owners of those wells.


Data Adjustments – For certain wells, staff had to estimate actual production to more accurately quantify water produced during WY 2004.  Data adjustments were required to estimate water production from 108 wells that had either incomplete water meter records or reported water production for a period longer than the water year. Production from metered wells with incomplete records was estimated by using generalized non Cal-Am monthly distribution factors developed by staff.  In 31 cases, production records were incomplete because reported meter readings covered a period shorter than WY 2004.  In seven other cases, production records were incomplete because meters were replaced or repaired after the start of WY 2004.  The application of monthly distribution factors allowed staff to reasonably account for the percentage of production that was not reported for each of these wells, which was then added to the annual total for these wells.


Similarly, there were 70 cases in which production was reported for a period longer than WY 2004.  Estimates of the amount that was over-reported were made based on the monthly distribution factors.  These amounts were then subtracted from the reported totals.  In two cases, production from wells with non-functioning water meters during WY 2004 was estimated based on historical production reports for these wells.


District-wide Production - Preliminary production values for WY 2004 are summarized by reporting method (Water Meter or Land Use), reporting status (active, inactive, or not reporting), and source area in Exhibit 4-A.  For comparison, production values for WY 2003 are presented in Exhibit 4-B.  The various source areas are shown in Exhibit 4-C.  The volume of water produced from each source area is shown in Exhibit 4-D.  The number of active non Cal-Am wells and the volume of water produced by each reporting method in WY 2004 and WY 2003 are compared in Exhibit 4-E.


District-wide, total water production increased by 324 acre-feet (1.6%) in WY 2004 compared to WY 2003.  Specifically, ground water withdrawals increased by 595 acre-feet (3.1%), while surface diversions decreased by 271 acre-feet (83.7%) in WY 2004.  Cal-Am did not divert any surface water in WY 2004 because of seismic safety and sedimentation concerns at San Clemente Dam and Reservoir.  It should be noted that WY 2004 is the first year since 1921, when San Clemente Dam was completed, that Cal-Am or its predecessor did not divert surface water from San Clemente Reservoir.


Monterey Peninsula Water Resources System (MPWRS) The MPWRS includes surface water in the Carmel River and its tributaries, and ground water in the Carmel Valley alluvial aquifer and coastal subareas of the Seaside Ground Water Basin.  Overall water production within the MPWRS in WY 2004 decreased by 91 acre-feet (0.5%) compared to WY 2003.  Specifically, Cal-Am production in WY 2004 decreased by 455 acre-feet (3.1%), and non Cal-Am production increased by 546 acre-feet (18.7%) relative to reported production in WY 2003.  Cal-Am production from Carmel Valley decreased 95 acre-feet (0.8%), and Cal-Am production from the coastal areas of the Seaside Basin decreased by 359 acre-feet (10.2%).  Non Cal-Am production from Carmel Valley decreased by 219 acre-feet (11.2%) compared to WY 2003, and non Cal-Am production from the coastal areas of the Seaside Basin increased by 765 acre-feet (79.7%). 

It is important to note that 160 acre-feet of Cal-Am production from Carmel Valley was delivered to the District’s Santa Margarita Test Injection Well (SMTIW) for injection into the Seaside Basin.  The District’s SMTIW produced 769 acre-feet of water from Seaside Basin that was not accounted for as “Cal-Am production”.  This “recovered” water was, however,  provided to Cal-Am for delivery to Cal-Am’s customers in WY 2004. 


Water Allocation Program – With respect to the District’s Water Allocation Program limits, Cal-Am production from the MPWRS in WY 2004 was 14,416 acre-feet, or 3,225 acre-feet (18.3%) less than the Cal-Am production limit of 17,641 acre-feet that was established with the adoption of Ordinance No. 87 in 1997.  Non Cal-Am production within the MPWRS in WY 2004 was 3,458 acre-feet, or 412 acre-feet (13.5%) more than the non Cal-Am production limit of 3,046 acre-feet established by Ordinance No. 87.  However, combined production from Cal-Am and non Cal-Am sources within the MPWRS was 17,874 acre-feet in WY 2004, which is 2,813 acre-feet (13.6%) less than the 20,687 acre-feet production limit set for the MPWRS as part of the District’s Water Allocation Program. 


Again, it should be noted that this analysis is complicated by the fact that, although 160 acre-feet of Cal-Am production from Carmel Valley was provided to the District for injection at the SMTIW, 769 acre-feet were recovered by the District from the SMTIW in WY 2004 and provided to Cal-Am for delivery to customers.  The 769 acre-feet recovered from the District’s SMTIW in WY 2004 was considered non Cal-Am production.  For reference, since the District’s Seaside Injection/Recovery Program began testing in Water Year 1998, a total of 1,101 acre-feet have been injected into the Seaside Basin and 1,139 acre-feet have been recovered or produced from the Seaside Basin.  A comparison of reported water production from the MPWRS in WY 2004 relative to the District’s Water Allocation limits is presented in Exhibit 4-F.


Lastly, it should be noted that 99% of the ground water production within the District was reported by the water meter method in WY 2004.  In addition, over 95% of registered well owners in the District reported annual production for their wells in WY 2004.



4-A      District-wide Water Production Summary for Water Year 2004

4-B      District-wide Water Production Summary for Water Year 2003

4-C      MPWMD Water Production Source Areas

4-D      Water Production by Source Area for Water Year 2004

4-E      District-wide Production by Reporting Method for non Cal-Am Wells in WY 2004 and 

            WY 2003

4-F       Comparison of Reported Production to Production Limits within the MPWRS in

WY 2004