These services require persistent and reliable Internet connections, therefore we DO NOT recommend dynamic web map services for real-time navigation. Please download the river charts to your local system for disconnected operations.
| River System | River Miles | From Town | To Town | Cell Name | Update Date |
|---|---|---|---|---|---|
| Allegheny | 001 to 053 | Pittsburgh, PA | Allegheny Lock No. 8 | U37AG001 | 02/20/2024 |
| Arkansas | 001 to 063 | Birmingham Bend | Plum Bayou | U37AR001 | 04/02/2024 |
| Arkansas | 063 to 126 | Plum Bayou | Murray Lock and Dam (No. 7) | U37AR063 | 05/30/2024 |
| Arkansas | 126 to 186 | Murry Lock and Dam (No. 7) | Petit Jean Light | U37AR126 | 04/02/2024 |
| Arkansas | 186 to 246 | Petit Jean Light | McLean Bottom Light | U37AR186 | 07/02/2024 |
| Arkansas | 246 to 308 | Kalamazoo | US Hwy 64 Garrison St. Bridge | U37AR246 | 05/02/2024 |
| Arkansas | 308 to 376 | Poteau River | Spaniard Creek | U37AR308 | 05/30/2024 |
| Arkansas | 376 to 444 | Spaniard Creek | Port of Catoosa (Head of Navigation) | U37AR376 | 05/30/2024 |
| Atchafalaya | 000 to 046 | Red River | Bayou Big Graw | U37AT000 | 07/02/2024 |
| Atchafalaya | 046 to 117 | Bayou Big Graw | Morgan City, LA | U37AT046 | 07/02/2024 |
| Black Warrior | 311 to Head | McPherson Landing | Head of Navigation | U37BW311 | 07/02/2024 |
| Clinch | 007 to 062 | Kingston, TN | Clinton, TN | U37CL007 | 02/20/2024 |
| Cumberland | 003 to 075 | Smithland, KY | Tobaccoport, TN | U37CR003 | 05/20/2024 |
| Cumberland | 075 to 149 | Tobaccoport, TN | Cheatham Lock and Dam | U37CR075 | 02/20/2024 |
| Cumberland | 149 to 221 | Cheatham Lock and Dam | Old Hickory, TN | U37CR149 | 02/20/2024 |
| Cumberland | 221 to 307 | Old Hickory, TN | Carthage, TN | U37CR221 | 02/20/2024 |
| Cumberland | 307 to 381 | Carthage, TN | Celina, TN | U37CR307 | 02/20/2024 |
| Green | 001 to 108 | Spottsville, KY | Rochester, KY | U37GR001 | 05/20/2024 |
| Illinois | 005 to 082 | Grafton, IL | La Grange, IL | U37IL005 | 05/30/2024 |
| Illinois | 082 to 137 | LaGrange, IL | Copperas Creek | U37IL082 | 07/02/2024 |
| Illinois | 137 to 199 | Copperas Creek | Senachwine Lake | U37IL137 | 07/02/2024 |
| Illinois | 199 to 257 | Senachwine Lake | Barry Island | U37IL199 | 07/02/2024 |
| Illinois | 257 to 285 | Barry Island | Rockdale, IL | U37IL257 | 04/18/2024 |
| Illinois | 285 to 309 | Rockdale, IL | Justice, IL (CSSC) and Story Creek (CSC) | U37IL285 | 06/17/2024 |
| Illinois | 309 to 322 | Calumet Sag Channel (CSC), Story Creek | Indiana Harbor Belt RR Bridge | U37IL309 | 06/17/2024 |
| Illinois | 310 to 319 | Justice, IL (CSSC) | Illinois Northern Bridge | U37IL310 | 06/17/2024 |
| Kanawha | 001 to 024 | Point Pleasant, WV | Handleys Landing Light and Daymark | U37KA001 | 04/12/2024 |
| Kanawha | 024 to 050 | Handleys Landing Light and Daymark | Jefferson, WV | U37KA024 | 02/20/2024 |
| Kanawha | 050 to 065 | Jefferson, WV | Charleston, WV | U37KA050 | 06/17/2024 |
| Kanawha | 065 to 091 | Charleston, WV | Boomer, WV | U37KA065 | 06/17/2024 |
| Kaskaskia | 002 to 036 | Kaskaskia Lock and Dam | Fayetteville, IL | U37KK002 | 03/01/2024 |
| Lower Mississippi | 236 to 325 | Wilkinson Pt | Palmetto, LA | U37LM236 | 04/02/2024 |
| Lower Mississippi | 325 to 425 | Palmetto, LA | Diamond cut-off (Oak Bend) | U37LM325 | 07/02/2024 |
| Lower Mississippi | 425 to 520 | Diamond cut-off (Oak Bend) | Kentucky Bend | U37LM425 | 03/01/2024 |
| Lower Mississippi | 520 to 601 | Kentucky Bend | Scrubgrass Bend | U37LM520 | 03/01/2024 |
| Lower Mississippi | 601 to 716 | Scrubgrass Bend | Cow Island Bend (Memphis) | U37LM601 | 05/30/2024 |
| Lower Mississippi | 716 to 829 | Cow Island Bend (Memphis) | Huffman Landing | U37LM716 | 07/02/2024 |
| Lower Mississippi | 829 to 951 | Huffman Landing | Cairo, IL | U37LM829 | 03/01/2024 |
| Missouri | 000 to 101 | St. Louis, MO | Gasconade River | U37MO000 | 07/02/2024 |
| Missouri | 101 to 201 | Gasconade River | Lamine River Bend | U37MO101 | 07/02/2024 |
| Missouri | 201 to 301 | Lamine River Bend | Baltimore Bend | U37MO201 | 07/02/2024 |
| Missouri | 301 to 399 | Baltimore Bend | Weston, MO | U37MO301 | 07/02/2024 |
| Missouri | 399 to 499 | Weston, MO | Rulo, NE | U37MO399 | 07/02/2024 |
| Missouri | 499 to 600 | Rulo, NE | Bellevue, NE | U37MO499 | 05/02/2024 |
| Missouri | 600 to 735 | Bellevue, NE | Sioux City, SD | U37MO600 | 07/02/2024 |
| Monongahela | 001 to 042 | Pittsburgh, PA | North Charleroi, PA | U37MN001 | 05/20/2024 |
| Monongahela | 042 to 086 | North Charleroi, PA | Greensboro, PA | U37MN042 | 02/20/2024 |
| Monongahela | 086 to 128 | Greensboro, PA | Whitehall, PA | U37MN086 | 03/15/2024 |
| Ohio | 001 to 012 | Pittsburgh, PA | Pittsburgh, PA | U37OH001 | 02/20/2024 |
| Ohio | 012 to 032 | Pittsburgh, PA | Montgomery Lock and Dam | U37OH012 | 04/18/2023 |
| Ohio | 032 to 087 | Montgomery Lock and Dam | Wheeling, WV, Lower Sisters Island | U37OH032 | 05/20/2024 |
| Ohio | 087 to 128 | Wheeling, WV, Lower Sisters Island | Hannibal Lock and Dam | U37OH087 | 02/20/2024 |
| Ohio | 128 to 166 | Hannibal Lock and Dam | Maplewood, WV | U37OH128 | 05/20/2024 |
| Ohio | 166 to 204 | Maplewood, WV | Belleville Lock and Dam | U37OH166 | 06/17/2024 |
| Ohio | 204 to 275 | Belleville Lock and Dam | Clipper Mills, OH | U37OH204 | 04/12/2024 |
| Ohio | 275 to 312 | Clipper Mills, OH | Huntington West End Highway Bridge | U37OH275 | 06/17/2024 |
| Ohio | 312 to 332 | Huntington West End Highway Bridge | Worthington, KY | U37OH312 | 06/17/2024 |
| Ohio | 332 to 391 | Worthington, KY | Concord, KY | U37OH332 | 04/12/2024 |
| Ohio | 391 to 439 | Concord, KY | Captain Anthony Meldahl Lock and Dam | U37OH391 | 06/17/2024 |
| Ohio | 439 to 534 | Captain Anthony Meldahl Lock and Dam | Markland, IN | U37OH439 | 06/17/2024 |
| Ohio | 534 to 582 | Markland, IN | Eighteen Mile Island | U37OH534 | 03/15/2024 |
| Ohio | 582 to 644 | Eighteen Mile Island | Tabacco Bend | U37OH582 | 05/20/2024 |
| Ohio | 644 to 736 | Tobacco Bend | Anderson Island | U37OH644 | 06/17/2024 |
| Ohio | 736 to 852 | Anderson Island | Wabash River | U37OH736 | 05/20/2024 |
| Ohio | 852 to 912 | Wabash River | Bay City, IL | U37OH852 | 03/15/2024 |
| Ohio | 912 to 980 | Bay City, IL | Mississippi River | U37OH912 | 06/17/2024 |
| Ouachita | 005 to 089 | Palmetto Lodge | McSween Lodge | U37OU005 | 03/01/2024 |
| Ouachita | 089 to 178 | Lower Coles Lodge | River Styx Lodge | U37OU089 | 03/01/2024 |
| Ouachita | 178 to 256 | Smith Lodge | Garretts Lodge | U37OU178 | 02/01/2024 |
| Ouachita | 256 to 338 | Garretts Lodge | Camden, AR | U37OU256 | 03/01/2024 |
| Red | 007 to 071 | Atchafalaya River | Harris Ferry | U37RR007 | 03/01/2024 |
| Red | 071 to 165 | Harris Ferry | Powhatan, LA | U37RR071 | 03/01/2024 |
| Red | 165 to 237 | Powhatan, LA | Shreveport, LA | U37RR165 | 03/01/2024 |
| Tennessee | 005 to 047 | Clarks River | Anderson Creek | U37TN005 | 02/20/2024 |
| Tennessee | 047 to 085 | Anderson Creek | Little Crooked Creek | U37TN047 | 09/15/2023 |
| Tennessee | 085 to 133 | Little Crooked Creek | Busseltown, TN | U37TN085 | 04/12/2024 |
| Tennessee | 133 to 218 | Busseltown, TN | Panther Creek | U37TN133 | 08/15/2023 |
| Tennessee | 218 to 262 | Panther Creek | Florence, AL | U37TN218 | 10/19/2023 |
| Tennessee | 262 to 306 | Florence, AL | Decatur, AL | U37TN262 | 02/20/2024 |
| Tennessee | 306 to 361 | Decatur, AL | Guntersville, AL | U37TN306 | 03/15/2024 |
| Tennessee | 361 to 391 | Guntersville, AL | Bellefonte, AL | U37TN361 | 02/20/2024 |
| Tennessee | 391 to 450 | Bellefonte, AL | Racoon Mountain | U37TN391 | 06/17/2024 |
| Tennessee | 450 to 518 | Raccoon Mountain | Town Creek | U37TN450 | 11/14/2023 |
| Tennessee | 518 to 564 | Town Creek | River Knobs | U37TN518 | 12/19/2022 |
| Tennessee | 564 to 606 | River Knobs | Donaldson Light | U37TN564 | 03/15/2024 |
| Tennessee | 606 to 652 | Donaldson Light | Head of Navigation | U37TN606 | 02/20/2024 |
| Tenn-Tom | 218 to 320 | Mile 218 | Tombigbee River | U37TT218 | 05/16/2024 |
| Tenn-Tom | 320 to 385 | Tombigbee River | Mile 385 | U37TT320 | 03/01/2024 |
| Tenn-Tom | 385 to 450 | Mile 385 | Mississippi Hwy 25 Bridge | U37TT385 | 03/01/2024 |
| Tombigbee | 001 to 088 | Mobile Bay | East Bassetts Creek (Powells Landing) | U37TB001 | 07/02/2024 |
| Tombigbee | 088 to 176 | East Bassetts Creek (Powells Landing) | Liberty Landing | U37TB088 | 07/02/2024 |
| Tombigbee | 176 to 311 | Liberty Landing | McPherson Landing | U37TB176 | 07/02/2024 |
| Upper Mississippi | 000 to 079 | Cairo, IL | Grand Tower (Tower Island Bar) | U37UM000 | 07/02/2024 |
| Upper Mississippi | 079 to 155 | Grand Tower (Tower Island Bar) | Harrisonville, IL | U37UM079 | 05/30/2024 |
| Upper Mississippi | 155 to 218 | Harrisonville, IL | Grafton, IL | U37UM155 | 07/02/2024 |
| Upper Mississippi | 218 to 301 | Grafton, IL | Lock and Dam #22 (Taylor Island) | U37UM218 | 05/30/2024 |
| Upper Mississippi | 301 to 359 | L and D #22 (Taylor Island) | Warsaw, IL | U37UM301 | 07/02/2024 |
| Upper Mississippi | 359 to 432 | Warsaw, IL | Edwards River | U37UM359 | 07/02/2024 |
| Upper Mississippi | 432 to 481 | Edwards River | Rock Island | U37UM432 | 07/02/2024 |
| Upper Mississippi | 481 to 526 | Rock Island, IL | Clinton, IA | U37UM481 | 07/02/2024 |
| Upper Mississippi | 526 to 553 | Clinton, IA | Bowman Slough | U37UM526 | 07/02/2024 |
| Upper Mississippi | 553 to 578 | Bowman Slough | Dubuque, IA | U37UM553 | 07/02/2024 |
| Upper Mississippi | 578 to 615 | Dubuque, IA | Guttenberg, IA | U37UM578 | 07/02/2024 |
| Upper Mississippi | 615 to 660 | Guttenberg, IA | Winnesheik Slough | U37UM615 | 05/02/2024 |
| Upper Mississippi | 660 to 723 | Winnesheik Slough | Winona, MN | U37UM660 | 05/30/2024 |
| Upper Mississippi | 723 to 785 | Winona, MN | Friedrich Pt | U37UM723 | 05/30/2024 |
| Upper Mississippi | 785 to 819 | Friedrich Pt | Nininger, MN | U37UM785 | 05/02/2024 |
| Upper Mississippi | 819 to 866 | Nininger, MN | Head of Navigation | U37UM819 | 07/02/2024 |
| White | 010 to 255 | Arkansas Post Canal | Newport, AR | U37WH010 | 08/31/2023 |