| Mississippi River Gage Sheet | ||||
| Location / Description | River Mile | Gage Zero |
Gage at LOL (Flat Pool) |
LOL Elev. (Flat Pool) |
| Lock 10, Tail (downstream side) | 615.1 | 600.0 | 3.0 | 603.0 |
| Cassville, Left Bank, Dairyland Power, staff + wire weight | 606.7 | 596.3 | 6.7 | 603.0 |
| Waupeton, Right Bank, staff at bridge | 599.9 | 593.3 | 9.7 | 603.0 |
| Specht's Ferry, Right Bank, staff on rock wall | 592.3 | 590.6 | 12.4 | 603.0 |
| Lock 11, Pool (upstream side) | 583.0 | 588.2 | 14.8 | 603.0 |
| Lock 11, Tail (downstream side) | 583.0 | 588.2 | 3.8 | 592.0 |
| Dubuque, Right Bank, staff + satellite at RR Bridge | 579.9 | 585.4 | 6.6 | 592.0 |
| Nitaho Valley, Right Bank, staff at ramp & bridge | 567.1 | 581.8 | 10.2 | 592.0 |
| Gordon's Ferry, Right Bank, staff at RR Bridge | 566.2 | 582.1 | 9.9 | 592.0 |
| Lock 12, Pool (upstream side) | 556.7 | 580.2 | 11.8 | 592.0 |
| Lock 12, Tail (downstream side) | 556.7 | 580.2 | 2.8 | 583.0 |
| Pleasant Creek, Right Bank, staff on sheet piling upstream of ramp | 553.0 | 579.1 | 3.9 | 583.0 |
| Densmore Intake, Right Bank, staff (direct read) | 547.3 | 0.0 | 583.0 | 583.0 |
| Savanna Bay, Left Bank, "X" corner of concrete of sign at ramp = 589.83 | 541.0 | 0.0 | 583.0 | 583.0 |
| Sabula, Right Bank, staff at RR Bridge (channel 13) | 535.0 | 572.3 | 10.7 | 583.0 |
| Lock 13, Pool (upstream side) | 522.5 | 568.7 | 14.3 | 583.0 |
| Lock 13, Tail (downstream side) | 522.5 | 568.7 | 3.3 | 572.0 |
| Clinton, Right Bank, RR Bridge, staff downstream of pivot | 518.0 | 566.3 | 5.7 | 572.0 |
| Comanche, Right Bank, staff + tape inside satellite shed foot 8th Ave. | 511.8 | 563.2 | 8.8 | 572.0 |
| Princeton, Right Bank, staff | 502.1 | 563.5 | 8.5 | 572.0 |
| LeClaire, Right Bank, in shed 400 ft downstream of museum | 497.0 | 563.2 | 8.8 | 572.0 |
| Lock 14, Pool (upstream side) | 493.3 | 557.1 | 14.9 | 572.0 |
| Lock 14, Tail (downstream side) | 493.3 | 447.1 | 3.9 | 561.0 |
| Bettendorf, Right Bank, Phillip's oil dock, staff at cell | 487.2 | 551.4 | 9.6 | 561.0 |
| Lock 15, Pool (upstream side) | 482.9 | 542.5 | 18.5 | 561.0 |
| Lock 15, Tail (downstream side) | 482.9 | 542.5 | 2.5 | 545.0 |
| Sunset Marina, Left Bank, wire weight at hoist | 479.7 | 534.1 | 10.9 | 545.0 |
| Linwood, Right Bank, staff at Amoco dock | 475.5 | 534.2 | 10.8 | 545.0 |
| Eastern Iowa Power, Right Bank, staff at intake | 468.0 | 540.0 | 5.0 | 545.0 |
| Fairport, Right Bank, in pump house at hatchery (call lock 16) | 463.5 | 535.2 | 9.8 | 545.0 |
| Lock 16, Pool (upstream side) | 457.2 | 533.8 | 11.4 | 545.0 |
| Lock 16, Tail (downstream side) | 457.2 | 533.8 | 2.4 | 536.0 |
| Muscatine, Right Bank, tape at power plant (call lock 16) | 453.1 | 530.7 | 5.3 | 536.0 |
| Farmland Dock, Right Bank, staff at dock | 450.2 | 528.2 | 7.8 | 536.0 |
| Lock 17, Pool (upstream side) | 437.1 | 526.6 | 9.3 | 536.0 |
| Lock 17, Tail (downstream side) | 437.1 | 526.6 | 1.3 | 528.0 |
| Keithsburg, Left Bank, staff + wire weight at grain elevator | 427.7 | 523.2 | 4.8 | 528.0 |
| Oquawka, Left Bank, staff at downstream end Marina | 415.2 | 513.2 | 14.8 | 528.0 |
| Lock 18, Pool (upstream side) | 410.5 | 518.5 | 9.5 | 528.0 |
| Lock 18, Tail (downstream side) | 410.5 | 518.5 | -0.3 | 518.2 |
| Burlington, Right Bank, RR Bridge staff + satellite in shed on bank | 403.1 | 511.4 | 6.8 | 518.2 |
| I S U Power, Right Bank, staff at intake | 399.0 | 498.2 | 20.0 | 518.2 |
| Ft Madison, Right Bank, RR Bridge staff + satellite in shed on bank | 383.9 | 518.2 | 0.0 | 518.2 |
| Ft Madison, Right Bank, harbor, top of wall at ramp = 522.79 | 383.8 | 500.0 | 18.2 | 518.2 |
| Lock 19, Pool (upstream side) | 364.3 | 518.2 | 0.0 | 518.2 |
| Lock 19, Tail (downstream side) | 364.3 | 477.8 | 2.2 | 480.0 |
| Warsaw, Left Bank, staff on sheet pile upstream of elevator | 359.9 | 472.9 | 5.8 | 478.7 |
| Gregory, Right Bank, tape + satellite in shed at elevator | 352.9 | 472.7 | 5.5 | 478.2 |
| Lock 20, Pool (upstream side) | 343.2 | 468.5 | 7.0 | 475.5 |
| Lock 20, Tail (downstream side) | 343.2 | 468.5 | 1.5 | 470.0 |
| LaGrange, Right Bank, staff on cell + wire weight at elevator | 336.0 | 464.6 | 5.4 | 470.0 |
| Quincy, Left Bank, staff + satellite at water plant | 327.0 | 458.6 | 11.4 | 470.0 |
| Lock 21, Pool (upstream side) | 324.9 | 457.8 | 12.2 | 470.0 |
| Lock 21, Tail (downstream side) | 324.9 | 457.8 | 1.7 | 459.5 |
| N E Mo Power, Right Bank, staff at intake | 320.0 | 454.6 | 4.9 | 459.5 |
| Hannibal, Right Bank, staff at RR Bridge, satellite in bldg upstream harbor | 309.8 | 449.5 | 10.0 | 459.5 |
| Lock 22, Pool (upstream side) | 301.2 | 446.1 | 13.4 | 459.5 |
| Lock 22, Tail (downstream side) | 301.2 | 446.1 | 2.9 | 449.0 |