Long Lake in Hubbard, Minnesota, is a state-regulated body of water with a dam completed in 1949 by the Minnesota Department of Natural Resources. This Earth dam, standing at 25 feet high and 150 feet long, serves multiple purposes, including flood control and water storage. With a maximum storage capacity of 57,753 acre-feet and covering an area of 1,863 acres, Long Lake plays a crucial role in managing water resources in the region.

The dam's spillway, controlled in nature, can handle a maximum discharge of 1,000 cubic feet per second, minimizing the risk of flooding in the area. Despite its low hazard potential and satisfactory condition assessment, Long Lake is subject to regular inspections every 8 years to ensure its structural integrity and operational efficiency. With a very high risk assessment rating of 1, Long Lake remains a key feature in the local water resource management system, providing crucial support to the surrounding ecosystem and communities.

Situated on Shell River, Long Lake offers a picturesque setting for water resource and climate enthusiasts to explore the intersection of human infrastructure and natural landscapes. With its history dating back to the mid-20th century and ongoing state regulation, this body of water embodies the delicate balance between conservation and development in the face of changing environmental conditions. As a significant feature in the St. Paul District of Minnesota, Long Lake continues to play a vital role in the region's water management efforts, highlighting the importance of sustainable practices in safeguarding our natural resources for future generations.