SNOFLO


MATTHEW BROWN

RESERVOIR LEVELS
Soil Dam Trib To Thompson River
May 6, 2025


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Matthew Brown is a privately owned earth dam located in Union, Iowa, along a tributary to the Thompson River. Constructed in 2018 by the USDA NRCS, this dam serves multiple purposes including grade stabilization, recreation, and water supply. With a height of 30 feet and a length of 325 feet, Matthew Brown has a storage capacity of 28 acre-feet and covers a surface area of 2.2 acres, benefiting from a low hazard potential and a moderate risk assessment rating.

Managed by the Natural Resources Conservation Service, Matthew Brown features an uncontrolled spillway with a width of 24 feet and a maximum discharge capacity of 177 cubic feet per second. Despite its low hazard potential and a condition assessment that is not rated, this dam is designed to withstand various environmental challenges while supporting the local ecosystem and providing recreational opportunities for the community. As a vital structure in the region, Matthew Brown plays a crucial role in managing water resources and adapting to climate changes in the area.

Year_Completed 2018
Dam_Height 30
River_Or_Stream Trib to Thompson River
Dam_Length 325
Primary_Dam_Type Earth
Surface_Area 2.2
Drainage_Area 0.09
Nid_Storage 28
Outlet_Gates None
Hazard_Potential Low
Foundations Soil
Nid_Height 30
       

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