31. In 1992, a record peak water level of was recorded in the river channel . 32. Choked by sewage and factory runoff, some river channels here have become virtual cesspools. 33. In Long Beach, the bike path runs on the east side of the river channel . 34. It extends up to 12m into the river channel . 35. It is unclear how long the river channel has been considered part of the reservation. 36. Combined with the steep narrow river channel , this makes the Spen susceptible to regular flooding. 37. The bridge is a truss bridge with a swing span crossing the main river channel . 38. The river channel is marked with large green buoys. 39. The lighthouse was decommissioned in 1939, following the last of improvements to the river channel . 40. The Dagusha Channel and the Haihe river channel are separate fairways with slightly different regulations.