Page 25 - Beaumont Basin Watermaster

Section 3
Status of the Basin and Administration of the Judgment

Production information for the remaining individual users was estimated as an average of the last
two reporting years or using the water duty method. The year 2013 should be the last year in
which production from some of the overlying users is estimated as new production meters are
planned to be installed in early 2014.

Similar to the production reported for the Appropriators, a series of tables was developed to
report monthly and annual production from the Overlying Producers on a calendar year basis.
Starting with Table 3-2A for CY 2003 and continuing on an annual basis through Table 3-2K for
CY 2013, these tables show the actual or estimated production by well and by user. In addition,
their share of the safe yield and the amount of unused water for each Overlying Producer is
shown. It should be noted that these tables have been revised to reflect updated production
records for the Tukwet Golf Course wells since 2004.

During CY 2013, Overlying Producers produced an estimated 2,576 ac-ft; this level of production
is approximately nine percent higher than the 2,361 ac-ft pumped in CY 2012 (See Table 3-2J),
but close to 10 percent lower than the 2,838 ac-ft pumped in CY 2009 (See Table 3-2G). The
amount of groundwater produced by Overlying Producers in CY 2013 represents approximately
29.8 percent of the safe yield of the basin initially estimated at 8,650 ac-ft/yr. All Overlying
Producers pumped less than their respective share of the safe yield.

3.2.3 2003-2012 Annual Production Summary

The annual production on a calendar year basis for all Appropriators and Overlying users is
shown in Table 3-3. It should be noted that production in 2003 only includes the second half of
the year. Since July 2003, a total of 169,929 ac-ft have been pumped from the Beaumont Basin;
approximately 81 percent of this total has been pumped by Appropriators. The percentage of
groundwater production from Appropriators has steadily increased since the Judgment inception
from a low of 74 percent registered in CY 2003 to a high of 84 percent in each of the last four
calendar years including 2013.

Groundwater production peaked in CY 2007 when close to 20,000 ac-ft were pumped from the
basin; since, it declined steadily through 2010 to approximately 14,000 ac-ft; however, production
over the last three years has increased by 23 percent. Groundwater production since CY 2004
has averaged 16,042 ac-ft/yr. In CY 2013, a combined total of 17,114 ac-ft were pumped from
the basin; of this total, 14,537 ac-ft, or approximately 85 percent, were pumped by Appropriators.
Annual production for each of the Appropriators and for the Overlying Producers combined is
depicted in Figure 3-4.

3.3 Groundwater Recharge

The Watermaster is responsible for maintaining an annual account of all water artificially
recharged in the Beaumont Basin and any losses of water supplies or Safe Yield resulting
from such recharge water. Sources of groundwater recharge include imported water from the
State Water Project (SWP), recycled water, and new yield sources developed in the basin
since the Judgment inception in July 2003. The Watermaster has maintained the accounting
of groundwater recharge; however, losses from the basin, if any, have not been estimated.

Beaumont Basin Watermaster 2013 Annual Report – DRAFT August 2014 3-5