Pool No. 27, also known as Agassiz Pool, is a federal-owned water resource located in Thief River Falls, Minnesota. Built in 1938, this Earth-type dam stands at a height of 16 feet and stretches for a length of 1000 feet, with a NID storage capacity of 61310 acre-feet. The primary purpose of this dam is listed as "Other", with a low hazard potential and a condition assessment of "Not Rated".

Situated on the Thief River, Pool No. 27 serves as a vital resource for the surrounding area, providing a maximum discharge capacity of 25500 cubic feet per second. Despite not being state-regulated or inspected, this dam plays a crucial role in flood control and water management efforts in the region. With its historical significance and strategic location, Pool No. 27 remains a key part of the water infrastructure in Marshall County, Minnesota.

As water resource and climate enthusiasts continue to monitor and study the impact of dams on our environment, Pool No. 27 stands out as a noteworthy structure with a rich history and important role in the local ecosystem. While its condition assessment is currently marked as "Not Rated", ongoing efforts to assess and manage risk associated with this dam will be crucial in ensuring its continued safety and functionality for years to come.