Application of Tracer Method in Determining Groundwater Recharge: A Case Study at Mymensingh Area, Bangladesh

Among various water cycle characteristics, groundwater recharge is the leading hydrologic parameter
determining groundwater resources availability and sustainability. Accurate estimation of groundwater
recharge is important for proper development and management of the resource. Groundwater
recharge was estimated under field condition at Mymensingh region of Bangladesh using tracer
technique as well as water-balance method. Three years average recharge rate was found as 228.7
mm/year under tracer technique; and 141.7 mm under water balance method (which in terms of
percent of rainfall, were 11.2% and 7.16%, respectively). The results of the study will be helpful for
planning of sustainable groundwater in the area.