The impact of solid and liquid wastes from a rural town on the Chorobamba River Oxapampa, Peruvian Amazon

Document Type



Master of Science (MS)


Environmental Studies

First Advisor's Name

Michael McClain

First Advisor's Committee Title

Committee Chair

Second Advisor's Name

Rudolf Jaffe

Third Advisor's Name

Hector R. Fuentes

Date of Defense



The goal of this study was to determine the instantaneous vs. integrated effects of waste on the water quality of the Chorobamba River. I sampled 9 stations upstream and downstream of the Town of Oxapampa, Peru during the dry season (June-August) of 2004. I measured in-situ parameters such as pH, DO, temperature, etc. as well as vegetation, riverbank erosion, nutrients (N03, NH4, P04), coliform bacteria and macroinvertebrate communities to determine the current conditions of the river, as well as the integrated effects of pollution. Although water quality conditions remained stable, high fecal coliform concentrations and macroinvertebrate communities indicate deterioration in river health over a longer period of time. If riparian areas along the Chorobamba continue to decrease and if inputs of sewage into the rivers continue to increase, as a function of population, then, conditions will continue to deteriorate in the coming years.



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