The Ahansar Lake is a small water body (0.80km2) located at Sumbal, Sonawari. A limn logical study of this water body was initiated in December, 2011 and data on different physio-chemical and biological features are being regularly collected on monthly basis. The water body is facing multi fold pressure due to discharge of domestic sewage, agricultural runoff and solid wastes from the adjoining areas. The lake is highly alkaline with high conductivity. Unique feature of this lake is its high alkalinity and high calcium content which is due to its lime rich catchment which brings high calcium load along with storm waters. The nutrient concentration showed seasonal fluctuations in close association with the various activities going on in the catchment.
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