SPECIFIC YIELD EVALUATION - BARIND AREA, BANGLADESH

Proper planning of groundwater exploitation policy in Barind area, Ban galadesh needs the knowledge about the specific yield of the aquifer, whose computed values vary from 8 to 32% with a general decreasing tre nd from north towards central portion but the southern portion has bet ter specific yield value than the central portion. On the basis of spe cific yield variation the area is divided into: Zone-I: includes Dhamo irhat, Patnitola, Mohadevpur, Manda, eastern side of Tanore, southern side of Godagari and Nawabganj, Shibganj and Bholahat thanas (specific yield values > 15%); Zone-II: covers the area of Niamatpur thana and the rest part of Nawabganj thana (specific yield value 10-15%) and Zon e-III: includes Nachole thana and the rest of Gomastapur thana (specif ic yield values < 10%).