Abstract The nutrients occur in the reservoir, however, majority as well as increased quantity of the nutrient elements get stacked in the hypolimnion zone of the reservoir. With a view to know the status of various nutrients in the epilimnion zone of reservoir, some elements such as phosphate-phosphorus (PO4-P), nitrate-nitrogen (NO3-N), calcium (Ca), magnesium (Mg), potassium (K) and sodium (Na) were analyzed on monthly basis after collection of water in 2.5litre polyethylene bottle from epilimnion zone of a small reservoir (Chohal) during December 2000 to November 2001 in Punjab. The nutrient parameters show considerable monthly and seasonal variation, which is also linked to the hydrological cycle. There were sharp changes observed in the seasonality of nutrient content in Chohal water as recorded after analyses. The maximum average monthly value of PO4-P and Na was observed during summer whereas Ca and Mg in monsoon. The maximum average value of NO3-N and K was recorded during winter season. The average monthly minimum value of PO4-P, K and Na was recorded during monsoon whereas Mg in winter season. The value of NO3-N and Ca was found to be minimum during summer. The overall range of NO3-N was recorded from traces to 1.774 mg/l whereas other nutrient contents such as PO4-P fluctuated from traces to 0.527 mg/l, Ca (9.0 to 15.9 mg/l ), Mg (3.43 to 26.49 mg/l), K (2.1 to 7.8 mg/l), and Na (6.6 to 37.5 mg/l) in Chohal reservoir. The findings revealed that the circulation of nutrient occurs in the epilimnion zone of the reservoir and the nutrient content varies season to season, however, the nutrients are important determinants of biogenic productivity of the reservoir.