SNOFLO



ARSENAL POWER

RESERVOIR LEVELS
Rock Dam Mississippi River
April 3, 2025


39°F

Tonight

54°F

Friday

6mph

Windspeed

75%

Humidity

Arsenal Power, also known as Structure 160, is a captivating hydroelectric facility located in Rock Island, Illinois, along the picturesque Mississippi River. Owned and operated by the US Army, this concrete dam stands as a testament to engineering excellence since its completion in 1878. With a structural height of 29 feet and a hydraulic height of 16 feet, Arsenal Power serves multiple purposes including hydroelectric power generation and navigation support.

Managed by the US Army, Arsenal Power boasts an impressive capacity with a storage volume of 30,000 acre-feet and a maximum discharge rate of 312,000 cubic feet per second. The dam features a controlled spillway with a width of 10 feet and outlet gates designed for vertical lift operations. Despite its age, Arsenal Power has undergone modifications in 1918 to enhance its structural integrity, ensuring its continued operation and safety. With a low hazard potential and a very high risk assessment rating, the facility remains a vital component of the region's water resource infrastructure.

Visitors and enthusiasts alike can appreciate the historical significance and engineering marvel of Arsenal Power as they explore its location in Rock Island, Illinois. From its multi-arch core type to its rock foundation, the dam stands as a symbol of sustainable water resource management and climate resilience. With state-regulated operations and regular inspections conducted by the US Army, Arsenal Power continues to exemplify the intersection of renewable energy production and environmental stewardship along the majestic Mississippi River.

Years_Modified 1918 - Structural
Year_Completed 1878
Dam_Height 26
River_Or_Stream Mississippi River
Dam_Length 728
Primary_Dam_Type Concrete
Hydraulic_Height 16
Nid_Storage 30000
Structural_Height 29
Outlet_Gates Vertical Lift
Hazard_Potential Low
Foundations Rock
Nid_Height 29
       

Weather Forecast

Created with Highcharts 8.0.0humidity0.05"0.05"0.95"0.95"0.64"0.64"1.31"1.31"Sat Apr 5Sun Apr 6Mon Apr 7Tue Apr 8Wed Apr 932°64°96°0%120%40%80%