Foundation for Environment, Climate and Technology

Catchment Modeling for WRM

Stream flow forecasts can be used in conjunction with hydrological models for water resources decision making. Here, a hydrological model for the Walawe basin in the south is shown along with its layout and schematic of the simulation model. This model was used to construct reservoir operation rule curves that guide reservoir managers based on monitored stream flow and anticipated irrigation needs for the season ahead.

• An example of a Reservoir Operating Rule for selected hydro-climatic and agricultural demand distributions for the Uda Walawe reservoir is shown based on criterion of reliability.
  
• Reservoir operation rule curves may be generated conditional on stream flow and precipitation predictions.