Marshall, also known as Beulah, is a local government-owned dam located in Brighton, Adams County, Colorado. Completed in 1904, this earth dam stands at a height of 26 feet and spans 547 feet in length, serving primarily for flood risk reduction purposes. The dam has a storage capacity of 98 acre-feet and a spillway width of 92 feet to manage maximum discharges.

Despite its age, Marshall has been well-maintained and is in satisfactory condition, with a low hazard potential and a moderate risk assessment rating. The dam underwent modifications in 2005 for hydraulic and structural improvements to enhance its resilience and performance. With its strategic location on the Brantner Gulch-TR, Marshall not only serves as a crucial flood protection structure but also provides recreational opportunities for the community.

Managed by the Colorado Division of Water Resources, Marshall is subject to state regulations, inspections, and enforcement to ensure its safety and functionality. The dam has a designated emergency action plan, though details on its preparedness and adherence to guidelines are yet to be confirmed. Overall, Marshall represents a significant infrastructure asset in the region, showcasing the importance of proactive risk management and maintenance practices for water resource and climate enthusiasts to appreciate and learn from.