Major floods in recent history and their recorded high water elevations are listed in the following table:
|1955||10.7||Lambert Road north|
|1958||11.8||Lambert Road north|
|1982||11.5||Hood Franklin Road|
|1983||10.5||Hood Franklin Road|
|1986||14.0||Lambert Road north|
Lambert Road north|
The 1986 storm caused the highest recorded flood elevations in the Point Pleasant area. It occurred over a 10-day period from February 11 through 20. Rainfall exceeded the 100-year frequency over many portions of the drainage area. Peak flows in the Cosumnes and Mokelumne rivers averaged between 60-to 110 year frequency, and Morrison Creek averaged 50- to 60-year frequency.
The 1997 storm was the largest recorded event on the Cosumnes River, with peak flow at the Michigan Bar stream gauge estimated to be close to a 200-year event. Many Cosumnes levees breached during this storm.
Return Period for
Total Storm Depth 1986
1986 Historical Flooding
1986 Observed Stages
1997 Historical Flooding
1997 Observed Stages
Return to: Beach Stone Lakes/Point Pleasant Flood Plan