Assesment of water quality of the Ivkina river near the health resort area (basin of the Vyatka river) as for zoobenthos

Zoobenthos research results are shown of the Ivkina river (inflow of the Vyatka river) under the influence of household drains from territory of the resort, as well as of agricultural drains from allotments, fields, pastures located on coast of the river. Biotic index of Woodiwiss and to Oligochaete index of Goodnight and Whitley estimate waters of the Ivkina river as clean and very clean. Chironomids index of Balushkina of the majority of the river stations shows waters as mildly foul