Aquaculture Engineering

Classification of ponds - Tide-cum pump fed farms

Unit 8 - Brackish and marine water fish farms

Brackish water fish farms

Classification of ponds
Tide-cum pump fed farms

The places where free tidal water is available only during some months period tide cum pump fed farms are suitable. In such farms for some months one has to depend upon the pumps to lift the water from the creeks. A site having mean spring tide range between 0.8 m to 1.3 m with ground levels at about low spring tide levels is suitable for such farms. These farms would require to be supplemented by pumping of water during certain months when spring tide range is smaller and exchange of water is not possible for several weeks at a stretch. This would also require main sluice gate and individual pond sluice like in the case of tide fed farms. But in addition pumping unit is required for supplying the water during the shortage of water.

Tide fed farms proves expensive on investment but economical in operation. Pump fed farms prove economical on investment but expensive in operation. The tide cum pump fed farms proves expensive on whole because of heavy investment and operation.