| encumber(verb, delay, hinder, obstruct, inhibit) |
| grade(noun, wall, embankment) |
| halt(verb, stop, close, block, prevent) |
| hamper(verb, stop, restrain, halt, block) |
| handicap(noun, verb, hinder, hindrance) |
| hindrance(noun, hindrance, wall, embankment) |
| hold(verb, hold back) |
| hold back(verb, expression, phrasal verb, stop, control) |
| milldam(noun, wall, embankment) |
| millpond(noun, wall, embankment) |
| mire(noun, verb, hinder, hindrance) |
| obstruction(noun, hindrance, wall, embankment) |
| occlude(verb, stop, close, halt, block) |
| pond(noun, gulf lake) |
| progenitor |
| reservoir |
| slow(verb, stop, control, block, delay) |
| snag(noun, verb, hinder, hindrance) |
| snarl(noun, verb, hinder, hindrance) |
| tangle(noun, verb, hinder, hindrance) |