Sentina Water Balance: Reclaimed-Water Supply Scenario

The water balance calculates demand separately for the reserve's ponds and agricultural irrigation, then compares each requirement with the available canal supply. Annual pond demand is 883,008 m³ and irrigation demand is 1,074,000 m³. Existing supply is estimated at 277,344 m³ for ponds and 114,566 m³ for irrigation. Subtracting existing supply gives additional requirements of 605,664 m³ and 959,434 m³ respectively, totalling 1,565,098 m³ per year. Treated wastewater is examined as a potential additional source. The balance is a planning calculation of demand and supply, distinct from measured delivery by the future reuse system.

Reported consortium canal supply: 277,344 m³/year for ponds and 114,566 m³/year for irrigation, totalling 391,910 m³/year.

The assessment estimates annual demand of 883,008 m³ for the ponds and 1,074,000 m³ for irrigation, totalling 1,957,008 m³. The resulting additional supply requirement is 605,664 m³ for ponds plus 959,434 m³ for irrigation, or 1,565,098 m³/year. Brodolini treated effluent is assessed as a potential source to address this gap.

The calculation covers April to October. Actual reuse depends on water availability, conveyance, water quality, ecological suitability and authorisations.