Lake Marshall 33 & 34, located in Lyon, Minnesota, is a local government-owned structure designed for roadway retention, with a core type of Buttress and a dam height of 17 feet. The dam has a storage capacity of 56 acre-feet and is regulated by the Minnesota Department of Natural Resources - Ecological and Water Resources division. The dam is situated on Meadow Creek-TR, in S33 T111N R41W, and serves a drainage area of 0.7 square miles.

Despite its low hazard potential, the dam's condition assessment is currently marked as "Not Rated," with the last inspection conducted in April 2019. The structure has a relatively low risk assessment and is not classified under the US Army Corps of Engineers jurisdiction. The dam's emergency action plan status, inundation maps, and risk management measures remain undisclosed, suggesting a need for further evaluation and preparedness in case of emergencies. For water resource and climate enthusiasts, Lake Marshall 33 & 34 presents an intriguing case study of a local government-owned dam in Minnesota with potential implications for water management and safety practices.