Abstract
Negative impacts on water quality from human activities in the Purari River basin are still of a very limited nature and can be categorized as follows: (i) increased sediment load due to soil disturbances from intensive agriculture, deforestation and some engineering activities, for example road building; (ii) direct use of stream water for washing and excreta disposal; discharge of sewage into streams; (iii) introduction of pesticides and other harmful components through their use in agriculture, mainly for protection of cash crops.KeywordsSediment TransportSediment LoadFaecal ColiformTotal ColiformFaecal PollutionThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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