Axell, located in Healdsburg, California, is a privately owned dam on Tr Franz Creek that was completed in 1952 for water supply purposes, specifically for irrigation and water supply. Standing at a height of 43 feet with a hydraulic height of 38 feet, Axell has a storage capacity of 155 acre-feet and covers a surface area of 12 acres. This earth dam plays a crucial role in managing water resources in Sonoma County, California, with a drainage area of 0.19 square miles.

Managed by the California Department of Water Resources (DWR) and subject to state regulation, Axell has a high hazard potential but remains in satisfactory condition according to its last assessment in September 2017. The dam is inspected annually to ensure its structural integrity and safety, with the most recent inspection conducted in August 2020. Despite its age, Axell continues to serve as a vital infrastructure for water management in the region, demonstrating the importance of maintaining and monitoring water resource facilities for climate resilience and sustainability.

With its association with the Natural Resources Conservation Service and the Sacramento District of the US Army Corps of Engineers, Axell highlights the collaborative efforts involved in managing water resources and ensuring dam safety. As a key player in the water supply infrastructure of Sonoma County, Axell serves as a reminder of the critical role that dams play in supporting agricultural irrigation and water supply needs in the face of changing climate conditions. Its location, design, and purpose make Axell a significant asset for water resource and climate enthusiasts interested in understanding the intersection of infrastructure, water management, and environmental stewardship.