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UPPER MISSISSIPPI RIVER LOCKS AND DAMS Depth at Level Upper Pool : Pool Miles Above Usable Lock Elevation Lift 200 on s No. Ohio River Nearest Town Bank Size in Feet (1) (2) Upper Sill Lower Sill Feet Feet Feet Feet 1 847.6 Minneapolis--St. Paul, Minn.... R 56x 400 (3) 725.1 37.9 15.5 10.1 06 x 400 -<- oboe a es 14.5 7.6 2 815.2 Hastings, Minn. .............. R a x aaa 687.2 12.2 16.0 15.1 a 110'x: 600° pe eae, fia wa ee oe nder construct 3 796.9 Red Wing, Minn.............. R 110 x 600 675.0 8.0 17.0 14.0 struction 4 752.8 Alma; WSs oo EN ee eee L 110 x 600 667.0 7.0 17.0 13.0 5 738.1 Minneiska, Minn.............. R 110 x 600 660.0 9.0 18.0 12.0 5A 728.5 Winona, Minn................. R 110 x 600 651.0 5.5 18.0 12.5 6 714.3 Trempealeau, Wis............. L 110 x 600 645.5 6.5 17.0 12.5 7 702.5 Dresbach, Minn............... R 110 x 600 639.0 8.0 18.0 12.0 8 679.2 Genoa, Wis................05. L 110 x 600 631.0 11.0 22.0 14.0 9 647.9 Lynxville, Wis................. L 110 x 600 620.0 9.0 16.0 13.0 10 615.1 Guttenberg, Ia................ R 110 x 600 611.0 8.0 15.0 12.0 it 583.0 Dubuque, Ia.................. R 110 x 600 603.0 11.0 18.5 12.5 12 556.7 Bellevue, Ia................... R 110 x 600 592.0 9.0 17.0 13.0 13 522.5 Clinton, Ia................0.0-. L 110 x 600 583.0 11.0 19.0 13.0 14 493.3 Le Claire, Ia.................. R 110 x 600 572.0 11.0 20.5 13.5 493.1 Pleasant Valley, Ia............. R 80 x 320 572.0 11.0 17.6 10.9 15 482.9 Rock Island, Ill................ L 110 x 600 561.0 16.0 24.0 11.0 110x 360 | ) ..... sence 17.0 11.0 16 457.2 Muscatine, Ia................. L 110 x 600 545.0 9.0 17.0 12.0 17 437.1 New Boston, Ill............... L 110 x 600 536.0 8.0 16.0 13.0 18 410.5 Burlington, Ia................. L 110 x 600 528.0 9.8 16.5 13.7 19 364.2 Keokuk, Ia... ................ R 110 x 358 518.2 38.2 14.0 9.2 1110x1200. | )..... wg ee es wes Proposed 20 343.2 Canton, Mo................205. R 110 x 600 480.0 10.0 15.0 12.0 21 324.9 Quincy, Ill... .............0... L 110 x 600 470.0 10.5 16.5 12.0 22 301.2 Saverton, Mo................. R 110 x 600 459.5 10.2 18.0 13.8 24 273.4 Clarksville, Mo................ R 110 x 600 449.0 150 19.0 12.0 25 241.4 Cap Au Gris, Mo.............. R 110 x 600 434.0 15.0 19.0 12.0 26 202.9 Alton, Ill... . 2... ........00.0. L 110 x 600 419.0 (4) 22.0 32.0 ope 110x 360 |] ..... ie '6 16.0 (1) Elevation of pools for Dams 24, 25 & 26 referred to M.S.L., 1929 Adj.; all others to The lock at Pleasant Valley included in the above tabulation is the Le Claire Canal Lock, M38.L., 1912 Adj. which was completed prior to the existing canalization project. This lock has been retained (2) Lift at flat pool stage. for use as an auxiliary lock at Dam No. 14 and is not the main lock at this site. The main (3) Top of flashboards, normal pool. Masonry crest elevation 723.1. aia eee, - 7 ee t 1 din ditebe the Rage ' : : information it is evident that a vessel governed in size e limiti (4) Lift above possible future pool. Lift at extreme low water about 28.2 feet. gimensicns of the main lock at Keokuk (No. 19), 110 x 358 feet, can prdaead front 'Alton re t. Paul, Minnesota. GREEN'S GREAT LAKES & SEAWAY DIRECTORY, INC. The Original Publishers of Coal Docks on the Great Lakes since 1910 246