Water allocation in the combined system LB
- The system's ability to meet irrigation demand in ancient tank command areas depends on water balance analysis.
- Analysis considers normal (mean) flow and 80% reliable flow.
- Normal year represents flow with a 50% probability of exceedance, while a dry year corresponds to 80% probability of exceedance.
- These probabilities determine the reliability of water supply.
- The percentage of irrigation demand fulfilled by the system depends on calculated water availability under normal and dry conditions.
- It also depends on the water requirements for irrigation in each ancient tank command area.
Below figure indicated that the comparison of total unmet water demands for 134 LB tank irrigation areas with single cultivation (Maha season) and no new reservoir supply
