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Site selection for Brackish water fish farms - High flood levels
Unit 8 - Brackish and marine water fish farms
High flood levels
For extensive and semi-intensive culture practices where the water supply and draining are mostly done by gravity, the sites with an elevation above MHWL (Mean Higher High Water Level) are not suitable as they would require much excavation; similarly sites with elevation below LLWL (Mean lower low water) are also not suitable as the draining and drawing of the water in ponds become a big problem. For extensive and semi-intensive ponds, elevation of the land should be slightly above MLLW and slightly below MHWL; while intensive ponds should be slightly above MHWL, but should not exceed 2 meter above MHWL.
For extensive and semi-intensive culture practices where the water supply and draining are mostly done by gravity, the sites with an elevation above MHWL (Mean Higher High Water Level) are not suitable as they would require much excavation; similarly sites with elevation below LLWL (Mean lower low water) are also not suitable as the draining and drawing of the water in ponds become a big problem. For extensive and semi-intensive ponds, elevation of the land should be slightly above MLLW and slightly below MHWL; while intensive ponds should be slightly above MHWL, but should not exceed 2 meter above MHWL.
Last modified: Wednesday, 27 April 2011, 8:48 AM