Grizzly Creek, also known as Grizzly Ice Pond, is a privately owned dam located in Portola, California. Built in 1915, this gravity dam stands at a height of 39 feet and serves multiple purposes including flood risk reduction, irrigation, recreation, and water supply. With a storage capacity of 140 acre-feet, Grizzly Creek plays a crucial role in managing water resources in the area.

The dam is regulated by the California Department of Water Resources (DWR) and is subject to regular inspections to ensure its safety and structural integrity. With a high hazard potential, Grizzly Creek has been deemed to be in satisfactory condition as of the last assessment in September 2017. The dam is situated on Big Grizzly Creek and has a drainage area of 50.5 square miles, making it a key infrastructure for flood risk reduction in the region.

Despite its age, Grizzly Creek continues to play a vital role in water management and protection in Plumas County. With its strategic location and ability to store water for various purposes, this dam serves as a testament to the importance of sustainable water resource management in the face of changing climate conditions.