| 1 | 796 | HMWBPhysicalAlteration_Enum | Locks |
| 2 | 797 | HMWBPhysicalAlteration_Enum | Weirs / dam / reservoir |
| 3 | 798 | HMWBPhysicalAlteration_Enum | Channelisation / straightening / bed stabilisation / bank reinforcement |
| 4 | 799 | HMWBPhysicalAlteration_Enum | Dredging / channel maintenance |
| 5 | 800 | HMWBPhysicalAlteration_Enum | Land reclamation / coastal modifications / ports |
| 6 | 801 | HMWBPhysicalAlteration_Enum | Land drainage |
| 7 | 802 | HMWBPhysicalAlteration_Enum | Other |
