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St Paul District Water Control Center
Mississippi River Locks and Dams
Elevation Information

Updated: January 28, 1998
Lock
& Dam		 Top of
Lock Wall
Elevation		 Top of
Mitre Gate
Elevation		 Lock
Closure
Elevation		 Earth Dike Spillway Notes
Top
Elevation		 Length
(feet)		 Top
Elevation		 Length
(feet)
Upper
Saint
Anthony
Falls		 806.0   40,000
CFS		          
Lower
Saint
Anthony
Falls		 755.0   40,000
CFS		          
L&D 1 732.7   730.0 732.7   725.1
723.1		 574  
L&D 2 694.0 692.0 692.0 Original: 695.8
East End: 698.43
Middle: 699.40
West End: 701.30		 2,723     Access road will be under water
First 200 feet of paved dike slopes from 694.9 to 698.4
L&D 3 686.0 683.0 683.0 686.0 2,607     Entrance Road will be partially under water.
First 150 feet of Dike A from Pier House Number 5 is at 684.75
L&D 4 672.0 672.0 671.5 676.0 5,200      
L&D 5 665.0 665.0 664.5 670 to 672 18,383      
L&D 5A 663.0 660.0 660.0 664 to 665 20,000 651.0 1,670 Station 0+00 to 2+00 = 662.89 to 666.39
L&D 6 654.5 651.5 651.5 654.5 1,654 645.5 1,000 Low spot on dike at Station 4+00 is 654.07
L&D 7 647.0 647.0 646.5 649.0 6,979 at French Island
1,437 at Onalaska		 639.0 1,000 at French Island
677 at Onalaska		 Station 0+00 to 40+60 = 648.5 to 649.5
L&D 8 639.0   635.9 635.9
640.0		 14,750 631.0 1,440 Following Station reaches are 0.1 to 2 feet below elevation 639.5:

15+00 to 21+50, 23+00, 27+50 to 31+100, 68+50 to 70+50, 171+00 to 172+00.

Station 52+00 to 62+00 ranges from 639.2 to 639.0
Station 92+43 to 105+00 is 638.9 at middle or reach.

On west spillway; West abutment top is 0.5 foot below east abutment top.
L&D 9 633.0   631.0 633.0 7,315 620.0 1,430 Low spot at Station 14+00 is 632.75
L&D 10 624.0   620.9 624.0 4,547 611.0 1,200 Low spot at Station 35+00 is 623.7.
In storage yard the low spot is about 623.85.
Also available are Lock and Dam High Water elevations.