Abstract:Estuaries in Haihe River Basin are located at the east of Haihe River Basin and west of Bohai bay. In recent year, degradation of estuarine ecosystem has become common due to a high level of pollutant load and water resource utilisation in order to support a continuously increasing population and economic development in Haihe River Basin. In order to minimize the negative influence of a reduced river discharge, the ecological water demands for different ecological objective are calculated for Haihe, Luanhe ...