COLIFORM TRANSPORT IN A PRISTINE RESERVOIR - MODELING AND FIELD STUDIES

This paper reports on field studies and model development aimed at und erstanding coliform fate and transport in the Quabbin Reservoir, an ol igotrophic drinking water supply reservoir. An investigation of reserv oir currents suggested the importance of wind driven phenomena, and th at both lateral and vertical circulation patterns exist. In-situ exper iments of coliform decay suggested dependence on light intensity and y ielded an appropriate decay coefficient to be used in CE-QUAL-W2, a tw o-dimensional hydrodynamic and water quality model. Modeling confirmed the sensitivity of reservoir outlet concentration to vertical variabi lity within the reservoir, meteorological conditions, and location of coliform source. (C) 1998 IAWQ. Published by Elsevier Science Ltd.