The Maximum Water Level (MWL) represents the highest water level a reservoir or water body is designed to reach under specific conditions. It's also referred to as the Highest Reservoir Level or the Highest Flood Level.
Understanding Maximum Water Level
The Maximum Water Level is a crucial parameter in water resource management, dam safety, and flood control. It signifies the upper limit of water that a reservoir can safely hold.
- Definition: The highest elevation of the water surface that a reservoir is designed to reach during extreme events.
Key Aspects of MWL
Here's a breakdown of why the MWL is important:
- Safety: Ensures the structural integrity of dams and related infrastructure.
- Flood Control: Helps manage and mitigate downstream flooding.
- Design Parameter: Critical for designing spillways and other hydraulic structures.
MWL in Relation to Other Levels
The MWL is often considered in relation to other reservoir levels:
| Level | Description |
|---|---|
| Dead Storage Level | The lowest level at which water can be drawn from the reservoir. |
| Full Reservoir Level (FRL) | The level at which the reservoir is considered full under normal operating conditions. |
| Maximum Water Level (MWL) | The highest level the reservoir can reach, usually during extreme flood events. |
| Live Storage | The volume of water between the Dead Storage Level and the lower of the actual water level and FRL. |
Importance of MWL
The MWL is often equal to MWL corresponding to Probable Maximum Flood(PMF). This ensures adequate flood control capacity within the reservoir.
