Excavation of tanks was a notable feature of the public works system under the Ahoms. They believed that excavating tanks is one of the greatest acts of piety. The tanks are usually very large in dimension and popularly known as sāgar (sea). In Ahom Chronicles it is mentioned that the selection of the site for a proposed tank depended on an expert known as mātichelekā or the soil tester who undertook a scientific experiment for locating a perennial spring for keeping the water level of the tank constant. Another noticeable feature is that most of the tanks excavated by the Ahom rulers still maintain a water level much higher than the topography of the land around them.
Gaurisagar, Sivasagar, Assam
Monsoon : Average Rainfall: 2197 mm (85.49")
Summer : Average Temperature: 31.8°C
Winter : Minimum Temperature: 9.8°C
Recommended Season to Visit : October to March
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