Water quality of the river Chenab, an important Himalayan tributary of the river Indus, was studied at Akhnoor and has been described. Temperature, depth, turbidity and BOD recorded winter low record. Transparency, conductivity, total dissolved solids, dissolved oxygen, bicarbonate, chloride, calcium, magnesium and total hardness remained comparatively high during winter. Carbonate, sodium and potassium observed winter increase during first year and low record during second year. pH, nitrate, sulphate and silicate observed winter low record during first year and high record during second year. Phosphate observed irregular record throughout the year. These physico-chemical parameters remained irregular during summer and monsoon season.
Fish survey in lentic and lotic water bodies of Tehsil Mendhar, District Poonch has revealed the presence of 21 fish species belonging to 04 orders, 07 families and 16 genera. There is a dominance of Cypriniformes (17 species) followed by Siluriformes (2 species) and Mastacembelliformes and Perciformes (one species each). Among the enlisted fishes Botia birdi, Ompok pabda and Glyptothorax punjabiensis are the new records for Poonch District. Maximum monthly perennial contribution, sometimes 100%, in fish catches is shared by Schizothorax richardsonii. Fishing methods commonly employed include rod and hook, cast net, wall gill net, hand net, pot trap, hand picking, baskets, buckets, poisoning (bleaching powder, extract of Euphorbia royalaena, seed powder of Xanthoxylum alatum), electric shocking, light traps and dynamiting and grenading. Decline in fish diversity and conservation measures in the area have also been discussed.