Hanna Lagoon (Cell 1 & 2)

• Overview
• Reservoirs
• Rivers
• Fishing
• Boat Ramps
• Explore

Hanna Lagoon (Cell 1 & 2) is a water resource located in Carbon County, Wyoming, with a primary purpose designated as 'Other'. Constructed in 1988, this Earth-type dam stands at 8 feet high and spans a length of 3900 feet, with a maximum storage capacity of 61 acre-feet. The lagoon is regulated by the State of Wyoming and is subject to regular inspections, with the last assessment conducted in July 2017 revealing a fair condition. Despite its low hazard potential, a high risk assessment has been assigned to Hanna Lagoon, indicating potential vulnerabilities that require attention.

The dam's location within the drainage of Big Ditch Creek ensures its significance in managing water resources and climate impacts in the region. The structure, designed by Paul McCarthy, features a stone core and a soil foundation, with two controlled outlet gates for water release. The absence of a spillway suggests a unique design that requires careful monitoring and maintenance to uphold safety standards. As a Local Government-owned facility, Hanna Lagoon plays a crucial role in water management and flood control efforts, highlighting the importance of maintaining its infrastructure for sustainable water resource utilization.

With its strategic positioning and critical role in water management, Hanna Lagoon serves as a vital asset for Carbon County and Wyoming. The lagoon's fair condition assessment, coupled with a high-risk designation, underscores the need for proactive risk management measures to ensure its long-term functionality and safety. By staying vigilant in monitoring the dam's structural integrity and implementing necessary maintenance and emergency preparedness measures, stakeholders can safeguard this essential water resource against potential climate-related challenges and contribute to the resilience of the surrounding ecosystem.