Page 28 - Beaumont Basin Watermaster - 2015 Annual Report

Section 3
Status of the Basin and Administration of the Judgment

water for which Beaumont should receive credit pursuant to the storage agreement with the
Watermaster and Section 5.4 of the Rules and Regulations. Technical documentation of the
amount of recycled water that reaches and recharges the Beaumont Basin would need to be
prepared by Beaumont and considered and accepted by Watermaster.

In CY 2015, the City of Beaumont discharged an estimated 3,360 ac-ft of recycled water at
DP-001 in Cooper’s Creek and an estimated 212 ac-ft at DP-007. Recycled water
discharges in CY 2015 were approximately 12 percent higher than in CY 2014. Monthly
discharges at DP-001 vary slightly seasonally and averaged 3.00 mgd in CY 2015;
conversely, discharges at DP-007 vary significantly during the year from 0.00 mgd in the
September through December 2015 period to a high of 0.38 mgd in June 2015. Monthly
recycled water discharges by the City of Beaumont since 2007 are summarized in Table 3-5.

3.3.3 New Yield Stormwater Recharge

Before accounting for any new yield resulting from the recharge of local surface water, not
initially considered as part of the Basin Safe Yield, Watermaster needs to develop a
methodology to quantify and credit the New Yield to the party that creates the new recharge.
According to Part VI Paragraph 5.V of the Judgment, Watermaster shall make an
independent scientific assessment of the estimated new yield created by each proposed
project. It is our understanding that Beaumont has been recharging local waters at various
locations in the Basin and would like to receive credit for the New Yield developed. For
Beaumont to receive credit however, Watermaster will need to develop the methodology to
compute and credit the New Yield dating back to February 20, 2003.
3.4 Water Transfers and Adjustments of Rights

Section 7 of the Watermaster Rules and Regulations, as amended in September 2008,
provides for the adjustment of rights by and between Appropriators and Overlying Parties.
This section indicates that Watermaster shall maintain an accounting for all transfers and
include said transfers in the Annual Report or other relevant document. There are three types
of transfers that Watermaster accounts for: a) transfer of water rights and/or water in storage
between Appropriator Producers, b) transfer of water rights from Overlying Producers to an
Appropriator Producer in exchange for water service, and c) the allocation of unused
Overlying Water to the Appropriator Parties based on their share of the Operating Safe Yield.

According to Part VI, Administration, Paragraph 5Y of the Judgment, the Safe Yield of the
Beaumont Basin shall be redetermined at least every 10 years after the date of entry of the
Judgment, February 4, 2004. In 2015 the Safe Yield of the Beaumont Basin was
redetermined and estimated at 6,700 ac-ft/yr. This amount represents a 22.54 percent
reduction from the previous estimate of 8,650 ac-ft/yr. Table 3-6 presents the initial and
revised production rights from individual Overlying Producers and compares them against
actual groundwater production during the 2011-15 five year period for each user. Annual
average groundwater production during this period for all Overlying Producers combined was
estimated at 1,964 ac-ft/yr; representing approximately 30 percent of the revised safe yield.
Individually, none of the Overlying Producers produced more than their allowable production
rights during this five year period; Sharondale Mesa Owners Association produced the

Beaumont Basin Watermaster 2015 Annual Report – Final – December 2016 3-7