Limnology of a Warm Hypertrophie Wastewater Reservoir in Israel

Juanico M. (1994). Limnology of a Warm Hypertrophic Wastewater Reservoir in Israel. I. The Physical Environment. Int. Revue ges. Hydrobiol. 79(3):423-436.

ABSTRACT

This paper deals with stratification in a small reservoir (50 000 m³ volume, 5.5 m depth) receiving wastewater with a BOD of 80 mg/l during the winter in order to irrigate agricultural areas during the dry summer. The reservoir goes through three partially overlapping annual cycles: solar radiation, water temperature and reservoir operation. It presents both permanent (deep) and ephemeral (shallow) stratification during the summer in spite of the strong breeze, due to both thermal and biogenic chemical gradients. There are stratified and non-stratified wastewater reservoirs in Israel. Stratification in hypertrophic impoundments seems to depend also on parameters derived from the chemical composition of hypertrophic waters. (e.g., turbidity, biogenic gradients, wind/water friction coefficient, viscosity).

KEYWORDS

Warm climates, hypertrophic waters, operation, stratification, biogenic chemoclines