| The original watercourse was blocked by the scree slope we had just climbed over, and now the water disappeared into a scary narrow fissure. |
| Wetlands shave off peak flows and impound water, thereby increasing the travel time of water down a watercourse. |
| The area where they are located is precarious because the ravine is a main watercourse. |
| One of the best, but also the slowest, method is to fill the finished watercourse or pond with water and leave over winter. |
| While canalizing the watercourse for ships to navigate, this gulf was filled up with the gound excavated. |
| Options are limited because we are in the upper reaches of a river that has a narrow watercourse through an historic town. |
