(1) Dams fragment rivers making it difficult for aquatic fauna to migrate especially for spawning.
(2) The reservoirs that are created on the floodplains also submerge the existing vegetation and soil leading to its decomposition over a ** of time.
(3) Multi-purpose projects that were constructed to control floods have triggered floods which cause extensive soil erosion.
(4) Sedimentation also meant that the floodplains were deprived of silt, a natural fertilizer, thriller adding on to the problem of land degradation.
(5) Multi-purpose projects induced earthquakes, caused water borne **** and pests and Pollution resulting from excessive use of water.
