ENVIRONMENTAL PARAMETERS IN THE TLAWNG RIVER BASIN IN MIZORAMB.C. Kusre, N. Kalita and S.C. PatraAbstract River basins are potential units for planning water resources development leading to creation of irrigation and power infrastructure. Study of environmental parameters of river basins provides a database for a comprehensive look to take decisions on execution of developmental projects.Tlawng river basin flowing in Mizoram which has a river length of I 02 km within Mizoram is one such typical river basin.Water quality analysed by taking sample from different sources representing surface water and ground water revealed that total hardness varied from 1 2.636 mg/lit to 92.664 mg/lit, pH ranged from 6.4 to 7.8 and maximum concentration of fluoride was 0.09 mg/lit. Soil erodibility analysed by Bouycous and Middleton method indicated that soil is highly erodible. Survey on health related parameters revealed high incidences of malaria followed by gastro-entreaties among the rural inhabitants.This is attributed mainly to plentiful breeding grounds for the disease causing vectors. Population density in the basin is 22 persons/S(1km substantiates the river basin which is low and any developmental project will not have adverse affect on human population.
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