reservoir capacity behind great lakes dams · us army corps of engineers detroit district study...
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US Army Corpsof EngineersDetroit District
Reservoir Capacity Behind Great Lakes
Dams
Study Team
• USACE, Detroit
• Wayne State University
• USGS, Michigan Water Science Center
US Army Corpsof EngineersDetroit District
Study Objectives
• Develop an understanding of the storage capacity for sediment behind dams in the Great Lakes through monitoring, modeling and assessment of historic documents
Influence of Dams
Year Model Conditions
Total Soil Erosion in the
Watershed (m3 per year)
Total Sediment at Mouth of Paw
Paw (m3 per year)
Total Sediment at Harbor Mouth
(m3 per year)
1992 Reference Condition 675,000 11,000 44,000
1992 No dams or reservoirs 675,000 11,000 216,000
US Army Corpsof EngineersDetroit District
(44,000 m3 = 57,000 yd3)
Influence of DamsUS Army Corpsof EngineersDetroit District
Source: USACE, Detroit
Potential Reservoirs for Sediment Capacity Study
Red – DamsOrange – MI dams in RESSEDGreen – Flow gagesYellow – Sediment gages
Dams where Reconniasance has been completed
Alcona DamAu Sable River
State : MI County : Alcona Owner : Consumer Energy River : Au Sable River Flow Gage U/S : Yes Sediment Gage U/S : No Historical Drawings : Waiting for approval RESSED : No Boat Access : YES Gage D/S : Flow
Alcona Dam
Dam Height: 60 feet
Drainage Area : 1,469 sq. miles
Normal Storage : 25,000 acre-feet
NID ID : MI00150
Alcona Dam
Tasks• Reservoir site selection• Collect/analyze historic data• Collect field data
• Sediment cores• Bathymetry
• Develop sediment rating curves• Storage capacity analysis
Questions?
Dr. Jim Selegean, P.E., P.H.U.S. Army Corps of Engineers, Detroit DistrictGreat Lakes Hydraulics and Hydrology Office
477 Michigan AveDetroit, MI 48226
313.226.6791
Bottom of Silver Lake Reservoir, after dam failure
US Army Corpsof EngineersDetroit District
