The Long-Stalled SJ River Bypass May Move Forward

Manteca/Ripon Bulletin

Efforts to complete the widening of Paradise Cut that would significantly improve flood protection for urbanized areas of Manteca, Lathrop, and Stockton may finally move forward.

The San Joaquin Area Flood Control Area (SJAFCA) is positioning itself to be the lead agency to shepherd the project involving widening the seven-mile long Paradise Cut where it branches off the San Joaquin River and passes beneath Interstate 5 just north of the Interstate 205 interchange to where it connects with the Old River.

Engineers have determined expanding the Paradise Cut would reduce flood stages significantly at Mossdale Crossing — 1.8 feet under a 50-year event as well as under a 100-year event such as the 1997 flood that inundated 70 square miles between Manteca and Tracy and caused property losses in excess of $80 million.

It would also lower water levels at Stockton, French Camp, and Lathrop by two feet to enhance 200-year flood protection by directing some water to the south Delta and away from downstream levees.

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