Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| East Fork Clear Creek | Stream | | Blaine | 48 11 56 N | 109 29 32 W |
| East Fork Clover Creek | Stream | | Beaverhead | 44 42 48 N | 112 15 11 W |
| East Fork Collins Creek | Stream | | Valley | 48 39 39 N | 106 58 18 W |
| East Fork Corral Creek | Stream | | Beaverhead | 44 34 51 N | 112 12 43 W |
| East Fork Cottonwood Coulee | Valley | | Hill | 48 45 09 N | 109 59 02 W |
| East Fork Cottonwood Creek | Stream | | Fergus | 46 49 59 N | 109 24 59 W |
| East Fork Cottonwood Creek | Stream | | Meagher | 46 26 17 N | 110 48 53 W |
| East Fork Cream Creek | Stream | | Gallatin | 44 40 10 N | 111 12 00 W |
| East Fork Creek | Stream | | Lewis and Clark | 46 51 15 N | 112 41 46 W |
| East Fork Creek | Stream | | Lincoln | 48 14 25 N | 116 06 46 W |
| East Fork Creek Number 1 Mine | Mine | 1695 | Fergus | 47 13 40 N | 109 09 48 W |
| East Fork Creek Number 2 Mine | Mine | 1630 | Fergus | 47 13 23 N | 109 09 58 W |
| East Fork Creek Number 3 Mine | Mine | 1622 | Fergus | 47 13 22 N | 109 09 59 W |
| East Fork Crooked Creek | Stream | | Garfield | 47 40 21 N | 106 41 32 W |
| East Fork Cross S Creek | Stream | | Powder River | 45 44 33 N | 105 21 24 W |
| East Fork Crow Creek | Stream | | Sanders | 47 31 28 N | 115 33 28 W |
| East Fork Crow Creek | Stream | | Valley | 48 49 40 N | 107 04 19 W |
| East Fork Cyanide Creek | Stream | | Lewis and Clark | 47 19 45 N | 112 33 19 W |
| East Fork Dam | Dam | 1340 | Fergus | 46 58 60 N | 109 16 33 W |
| East Fork Dayton Creek | Stream | | Lake | 47 55 51 N | 114 19 40 W |
| East Fork Dean Creek | Stream | | Musselshell | 46 15 48 N | 108 43 59 W |
| East Fork Deer Creek | Stream | | Missoula | 46 49 12 N | 113 54 30 W |
| East Fork Denny Creek | Stream | | Gallatin | 44 41 31 N | 111 14 26 W |
| East Fork Divide Creek | Stream | | Silver Bow | 45 51 47 N | 112 40 30 W |
| East Fork Dry Creek | Stream | | Jefferson | 46 13 52 N | 111 52 58 W |
| East Fork Dry Creek | Stream | | Sanders | 47 32 10 N | 115 22 17 W |
| East Fork Dryhead Creek | Stream | | Carbon | 45 14 26 N | 108 17 08 W |
| East Fork Duck Creek | Stream | | Sweet Grass | 45 47 17 N | 110 12 12 W |
| East Fork Duck Creek | Stream | | Yellowstone | 45 38 58 N | 108 37 55 W |
| East Fork Dyce Creek | Stream | | Beaverhead | 45 16 46 N | 113 02 02 W |
| East Fork Elk Creek | Stream | | Sanders | 48 00 35 N | 115 59 36 W |
| East Fork Ellis Canyon | Valley | | Meagher | 46 51 24 N | 111 17 13 W |
| East Fork Emigrant Creek | Stream | | Park | 45 15 15 N | 110 40 14 W |
| East Fork Englebaugh Creek | Stream | | Beaverhead | 45 13 12 N | 113 27 25 W |
| East Fork Falls Creek | Stream | | Lewis and Clark | 47 13 47 N | 112 28 55 W |
| East Fork Fiddler Creek | Stream | | Stillwater | 45 22 27 N | 109 36 24 W |
| East Fork Finley Creek | Stream | | Missoula | 47 05 53 N | 114 03 07 W |
| East Fork Fisher Creek | Stream | | Meagher | 46 59 10 N | 111 04 11 W |
| East Fork Fishtrap Creek | Stream | | Deer Lodge | 45 53 17 N | 113 16 04 W |
| East Fork Flynn Creek | Stream | | Valley | 48 04 47 N | 105 50 06 W |
| East Fork Fords Creek | Stream | | Fergus | 47 11 51 N | 109 08 51 W |
| East Fork Forest Service Station | Locale | 1590 | Ravalli | 45 55 23 N | 113 43 38 W |
| East Fork Fortysix Creek | Stream | | Treasure | 46 13 37 N | 107 23 36 W |
| East Fork Fox Creek | Stream | | Richland | 47 40 52 N | 104 35 38 W |
| East Fork Froze to Death Creek | Stream | | Treasure | 46 26 33 N | 107 18 08 W |
| East Fork Garden Creek | Stream | | Madison | 45 15 24 N | 112 14 15 W |
| East Fork Government Creek | Stream | | Cascade | 47 01 55 N | 111 28 29 W |
| East Fork Granite Creek | Stream | | Madison | 45 21 36 N | 111 56 06 W |
| East Fork Grant Creek | Stream | | Missoula | 46 58 41 N | 113 59 22 W |
| East Fork Grasshopper Creek | Stream | | Meagher | 46 32 42 N | 110 44 51 W |
| East Fork Grave Creek | Stream | | Missoula | 46 47 59 N | 114 24 13 W |
| East Fork Green Pole Canyon | Valley | | Fergus | 46 51 06 N | 109 29 56 W |
| East Fork Hanging Woman Creek | Stream | | Rosebud | 45 17 45 N | 106 29 37 W |
| East Fork Haymaker Creek | Stream | | Wheatland | 46 32 07 N | 110 07 54 W |
| East Fork Hell Creek | Stream | | Madison | 45 41 36 N | 112 25 36 W |
| East Fork Hellroaring Creek | Stream | | Park | 45 07 36 N | 110 23 04 W |
| East Fork Hopley Creek | Stream | | Wheatland | 46 35 23 N | 109 59 06 W |
| East Fork Horse Creek | Stream | | Dawson | 47 14 14 N | 104 54 47 W |
| East Fork Horse Creek | Stream | | Rosebud | 46 27 11 N | 106 30 40 W |
| East Fork Hound Creek | Stream | | Cascade | 46 59 09 N | 111 35 48 W |
| East Fork Hyalite Creek | Stream | | Gallatin | 45 28 30 N | 110 57 34 W |
| East Fork Indian Creek | Stream | | Meagher | 46 51 16 N | 111 25 58 W |
| East Fork Indian Creek | Stream | | Mineral | 46 50 22 N | 114 50 07 W |
| East Fork Indian Creek | Stream | | Powell | 46 46 53 N | 112 47 38 W |
| East Fork Johnson Creek | Stream | | Mineral | 47 12 11 N | 114 49 13 W |
| East Fork Kate Creek | Stream | | Beaverhead | 44 45 54 N | 112 57 43 W |
| East Fork Kate Creek Springs | Spring | 2442 | Beaverhead | 44 46 21 N | 112 56 00 W |
| East Fork L O Creek | Stream | | Carter | 45 20 22 N | 104 34 43 W |
| East Fork La Marche Creek | Stream | | Deer Lodge | 45 55 01 N | 113 13 19 W |
| East Fork Lake Creek | Stream | | Powell | 47 09 46 N | 113 00 50 W |
| East Fork Lame Deer Creek | Stream | | Rosebud | 45 34 26 N | 106 37 03 W |
| East Fork Lazy Creek | Stream | | Flathead | 48 30 48 N | 114 28 08 W |
| East Fork Lee Creek | Stream | | Glacier | 49 00 58 N | 113 32 45 W |
| East Fork Lion Creek | Stream | | Meagher | 46 41 35 N | 110 33 54 W |
| East Fork Little Porcupine Creek | Stream | | Rosebud | 46 40 11 N | 106 40 41 W |
| East Fork Little Porcupine Creek | Stream | | Valley | 48 29 34 N | 106 00 06 W |
| East Fork Little Porcupine Creek | Stream | | Valley | 48 26 15 N | 106 05 30 W |
| East Fork Little Powder River | Stream | | Powder River | 45 22 36 N | 105 18 06 W |
| East Fork Little Pumpkin Creek | Stream | | Powder River | 45 40 12 N | 105 52 14 W |
| East Fork Little Sheep Creek | Stream | | Beaverhead | 44 34 37 N | 112 40 45 W |
| East Fork Lolo Creek | Stream | | Missoula | 46 42 43 N | 114 31 56 W |
| East Fork Lone Tree Creek | Stream | | Garfield | 47 20 55 N | 107 21 00 W |
| East Fork Long Branch Creek | Stream | | Garfield | 47 10 55 N | 106 51 24 W |
| East Fork Longfork Creek | Stream | | Rosebud | 46 29 37 N | 106 56 20 W |
| East Fork Lookout Creek | Stream | | Lincoln | 48 40 47 N | 115 28 35 W |
| East Fork McCabe Creek | Stream | | Powell | 47 06 42 N | 113 06 10 W |
| East Fork McClellan Creek | Stream | | Jefferson | 46 27 51 N | 111 51 25 W |
| East Fork McKay Creek | Stream | | Sanders | 47 58 13 N | 115 38 32 W |
| East Fork Meadow Creek | Stream | | Powell | 47 07 40 N | 112 48 04 W |
| East Fork Mendenhall Creek | Stream | | Sweet Grass | 45 42 32 N | 110 11 38 W |
| East Fork Mill Creek | Stream | | Custer | 46 21 02 N | 105 38 17 W |
| East Fork Mill Creek | Stream | | Park | 45 18 58 N | 110 34 03 W |
| East Fork Miller Creek | Stream | | Wheatland | 46 21 02 N | 110 16 38 W |
| East Fork Mineral Creek | Stream | | Powell | 47 09 03 N | 112 50 58 W |
| East Fork Monture Creek | Stream | | Powell | 47 14 39 N | 113 09 36 W |
| East Fork Moon Creek | Stream | | Custer | 46 14 05 N | 105 55 48 W |
| East Fork Mud Creek | Stream | | Judith Basin | 46 46 58 N | 109 50 32 W |
| East Fork Mudd Creek | Stream | | Fallon | 45 52 16 N | 113 23 00 W |
| East Fork Muddy Creek | Stream | | Big Horn | 45 32 17 N | 106 45 04 W |
| East Fork North Fork Blackfoot River | Stream | | Lewis and Clark | 47 11 48 N | 112 53 13 W |
| East Fork North Fork Teton River | Stream | | Teton | 47 58 34 N | 112 48 36 W |
| East Fork Number 4 Mine | Mine | 1467 | Fergus | 47 12 51 N | 109 09 03 W |
| East Fork Number 5 Mine | Mine | 1487 | Fergus | 47 12 48 N | 109 08 59 W |
| East Fork Number 6 Mine | Mine | 1641 | Fergus | 47 13 32 N | 109 09 33 W |
| East Fork O'Dell Creek | Stream | | Rosebud | 45 25 15 N | 106 18 50 W |
| East Fork O'Fallon Creek | Stream | | Carter | 46 06 19 N | 104 44 04 W |
| East Fork of the Bitterroot River Bridge | Bridge | 1244 | Ravalli | 45 55 01 N | 114 06 12 W |
| East Fork Oswego Creek | Stream | | Valley | 48 04 15 N | 105 53 16 W |
| East Fork Otter Creek | Stream | | Powder River | 45 33 30 N | 106 12 47 W |
| East Fork Packer Creek | Stream | | Mineral | 47 25 55 N | 115 29 58 W |