Page 103 - Yucaipa Valley Water District - Board Workshop
P. 103
Workshop Memorandum 19-102
Date: April 9, 2019
From: Jennifer Ares, Water Resource Manager
Subject: Overview of the 2019 Habitat Monitoring Program Activities, Groundwater/Surface
Water Data Assistance, Annual Report, and Modification to the Monitoring and
Reporting Requirements
The Yucaipa Valley Water District began discharging to San Timoteo Creek in 1986 and currently
discharges tertiary treated recycled water to the stream system. The riparian vegetation along
San Timoteo Creek has been partially supported by the discharge of highly treated recycled water.
In order to maximize the reuse of recycled water, the District was granted a “change of point of
discharge” agreement from the State Water Resources Control Board permitting the reduction of
the discharge from San Timoteo Creek with definitive mitigation measures. Gradual reductions
of the discharge along with an adaptive management plan are required to ensure the vegetation
is not negatively impacted due to the reduction of recycled water flow.
The Habitat Monitoring Program for San Timoteo Creek defines the adaptive management plan
components for San Timoteo Creek. The monitoring plan consists of vegetation analysis, aerial
photography, and groundwater monitoring.
In order to validate the reduction in flow, an annual habitat monitoring program has been in
place and reports are prepared each year and submitted to the Resource Agencies. The District
is currently in its sixth year of reporting the habitat monitoring program activities. This year
District staff would like to address the components of the Program with the Resource Agencies
to determine if modifications would be appropriate based on actual results from prior studies.
Yucaipa Valley Water District - April 9, 2019 - Page 103 of 138
