Big Meadows - North Dike, also known as Big Meadows - Supplemental Dam, is a state-owned structure located in South Fork, Colorado. Completed in 1968, this earth dam serves primarily for recreation, including fish and wildlife pond activities. With a height of 15 feet and a length of 300 feet, the dam has a storage capacity of 3,356 acre-feet and covers a surface area of 115 acres. Situated on the South Fork Rio Grande, the dam is regulated by the Colorado Division of Water Resources and undergoes regular inspections to ensure its structural integrity.

The dam's spillway, which is uncontrolled, has a width of 56 feet, allowing for a maximum discharge of 3,333 cubic feet per second. While it has a high hazard potential, the condition assessment conducted in August 2020 deemed it satisfactory. The dam is equipped with emergency action plans and is subject to moderate risk assessment, indicating a moderate level of risk associated with its operation. Overall, Big Meadows - North Dike plays a crucial role in water resource management and recreational activities in the Mineral County region of Colorado.

Water resource and climate enthusiasts can appreciate the significance of Big Meadows - North Dike in balancing the needs of recreation and wildlife preservation. As a key structure on the South Fork Rio Grande, the dam not only provides a habitat for fish and wildlife but also offers a recreational space for locals and visitors alike. With its regulated state ownership and regular inspections, the dam ensures the safety of surrounding communities while maintaining a sustainable water supply for various purposes. Its strategic location and design make it a vital component of the water infrastructure in the region, highlighting the importance of responsible dam management in the face of changing climate conditions.