May 23, 2005 - Riverside County Flood Control

City of Murrieta SWMP
2.0 I NTRODUCTION TO T HE C ITY OF MURRIETA S TORMWATER
MANAGEMENT P LAN
2.1 PROGRAM OVERVIEW
The regulatory framework that provides the foundation for the Third-term MS4 Permit, and therefore this
SWMP, is described in Riverside County DAMP. This SWMP is a programmatic document developed by the
City of Murrieta to describe its specific ordinances, plans, policies and procedures necessary to manage Urban
Runoff and comply with the Third-term MS4 Permit. This SWMP together with the Riverside County DAMP
are the principal documents that comprehensively translate the Third-term MS4 Permit requirements into
programs and implementation plans for the City of Murrieta. The various program elements of this SWMP are
depicted in Figure 2-1.
2.2 DESCRIPTION OF MS4
The major MS4 facilities owned and operated by the City of Murrieta and regulated under the Third-term MS4
Permit consist of 14 miles of underground storm drains. Additionally, within the jurisdictional boundaries of
the City of Temecula 19.8 miles of open channels maintained by the Riverside County Flood Control and
Water Conservation District.
The City of Murrieta maintains a map of the MS4 facilities that it owns and operates. Each year, the City of
Murrieta updates this map and identifies modifications and additions to its major MS4 facilities in the Annual
Report.
2