Page 30 - Beaumont Basin Watermaster

Section 3
Status of the Basin and Administration of the Judgment

Deliveries of imported water by the SGPWA to the Little San Gorgonio Creek Spreading
Ponds began in August 2003; the agency has since recharged a total of 10,508 ac-ft
averaging 808 ac-ft/yr. Deliveries in CY 2013, at 881 ac-ft, were less than half of the amount
spread in CY 2011 and CY 2012. Deliveries in CY 2014 through CY 2017 were basically
non-existent as less than 44 ac-ft were spread in those four years combined. Under
Resolution 17-01, adopted on June 7, 2017, the SGPWA entered into a storage agreement
with the Beaumont Basin Watermaster to spread up to 10,000 ac-ft of imported water in the
Beaumont Basin subject to certain conditions. As part of their application, the SGPWA plans
to construct their own spreading facilities in the southwest corner of Brookside Avenue and
Beaumont Avenue.

3.3.2 Recycled Water Recharge
Prior to March 2010, Beaumont’s recycled water from Wastewater Treatment Plant No. 1
was discharged at Discharge Point No. 1 (DP-001) in Cooper’s Creek where it infiltrates into
the San Timoteo Management Zone and outside the Beaumont Basin. Starting in March
2010, Beaumont began deliveries of recycled water to Discharge Point No. 7 (DP-007),
located along an unnamed tributary of Marshall Creek, as shown in Figure 3-3. It is believed
that a portion of the recycled water discharged at this location reaches and recharges the
Beaumont Basin. It should be noted that deliveries to DP-007 ceased in the Fall of 2015 due
to mechanical failure of a pump station.

In CY 2017, the City of Beaumont discharged an estimated 3,663 ac-ft of recycled water at
DP-001 in Cooper’s Creek; no discharges were made at DP-007. Recycled water
discharges were approximately four percent higher than in CY 2016. Monthly discharges at
DP-001 varied slightly from a low 3.17 mgd in March to a high of 3.36 mgd in January; the
average for the year was 3.27 mgd. 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 the City of 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 the Judgment inception in February 2003
or since delivery of flows began, whichever is latest.

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

Beaumont Basin Watermaster 2017 Annual Report – DRAFT – February 2018 3-7