GREENWOOD RESERVOIR NEAR GREENWOOD

RESERVOIR LEVELS
December 21, 2024
1,497 ft 46.44, -87.80


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Greenwood Reservoir Dam in Gwinn, Michigan, is a privately owned structure that serves as a crucial water supply source in Marquette County. Completed in 1973, this Earth-type dam stands at a height of 60 feet and has a storage capacity of 22,750 acre-feet with a normal storage level of 18,000 acre-feet. Situated on the M Br Escanaba River, the dam plays a vital role in regulating the flow of water and ensuring a stable water supply for the surrounding area.

The dam's spillway, with a controlled design and a width of 280 feet, helps manage potential excess water while maintaining the structural integrity of the reservoir. In terms of safety measures, the dam has been assessed as satisfactory, but it holds a significant hazard potential, leading to a very high risk rating. Regular inspections are conducted, with the last assessment taking place in December 2016. Despite its age, Greenwood Reservoir Dam continues to play a crucial role in water resource management and climate resilience efforts in the region.

As water resource and climate enthusiasts, the Greenwood Reservoir Dam is a fascinating example of the intersection between human infrastructure and natural ecosystems. Its careful design and management by the Michigan DEGLE ensure the sustainable utilization of water resources while mitigating potential risks associated with dam operations. The dam's presence highlights the importance of maintaining critical infrastructure for water supply purposes and underscores the ongoing need for monitoring and assessment to ensure the safety and resilience of our water systems in the face of changing climate conditions.

Gage Height, Ft 24hr Change 0%
Percent of Normal 98%
Minimum 105.5 ft
2009-03-16
Maximum 122.69 ft
2021-10-14
Average 112 ft
Dam_Height 60
Hydraulic_Height 54
Year_Completed 1973
Nid_Storage 22750
Structural_Height 60
Primary_Dam_Type Earth
Surface_Area 1112
River_Or_Stream M Br Escanaba River
Dam_Length 4400
Hazard_Potential Significant
Nid_Height 60
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