Assessment of Small River Watershed Biogenic Washout and Reducing Measures

Abstract

The pollutants input into the Yakhroma River, a tertiary branch of the Volga tributary, was assessed. The quality of thalweg water was studied, as a result of which biogenic pollution was revealed by insufficiently treated wastewater from cities and arable land. Calculation of biogenic pollutants inputs into the river on the basis of GIS of the selected zones of watershed by washout intensity depending on slope angles and types of soils, was performed. Protection measures to reduce diffuse pollution of the river were proposed.