flume

/fluːm/
noun
  1. A narrow channel or trough for carrying water, often used in mining or logging.
    • The old mining flume carried water from the river to the gold panning site.
    • Loggers built a flume to transport timber down the mountain.
    • Water rushed through the flume, powering the mill's wheel.
  2. A water slide or chute at an amusement park or swimming pool.
    • She screamed with joy as she slid down the twisting flume.
    • The kids spent the afternoon going down the flume at the water park.
    • The new flume ride has a steep drop and a big splash at the end.