Storm Ready

Flood History

Major floods in recent history and their recorded high water elevations are listed in the following table:

High Water Elevation
(feet, NGVD1929 datum)?
195510.7Lambert Road north
195811.8Lambert Road north
198211.5Hood Franklin Road
198310.5Hood Franklin Road
198614.0Lambert Road north
199711.8 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

View 1986 Historic Flooding 

1986 Observed Stages


1997 Historical Flooding


1997 Observed Stages



Return to: Beach Stone Lakes/Point Pleasant Flood Plan