CANYON TUNNEL PROJECT

Together with its partner Oakdale Irrigation District (OID), South San Joaquin Irrigation District (SSJID) is constructing a bypass tunnel for its Joint Supply Canal (JSC). The project, currently referred to as the “Canyon Tunnel Project,” would increase water delivery reliability into the next century.

Project Update

In Chapter 2 of our Canyon Tunnel Project, we enter the turn-under period, a critical phase that sets the foundation for everything to come.

Assessing Water Supply Threats

Without the Canyon Tunnel, water supplies to the cities of Manteca, Lathrop, and Tracy and 52,000 acres in SSJID’s service area are at risk.

Landslides have previously blocked the movement of water through the canal, including a large landslide in 2013 that removed the canal from operation several months before the irrigation season.

If the landslide had occurred during the height of the irrigation season, it could have triggered severe water cutbacks and impacted many local growers. The Canyon Tunnel would limit the potential for these hazards and build critical resiliency.

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