Surface water mapping using google earth engine (GEE) for south Gujarat forest

The spatial and temporal changes in surface water area were analyzed in Dang district of south Gujarat. The time series of normalized difference water index (NDWI) with Google earth engine (GEE) open source online planetary processing platform was used. Spatial distribution precipitation, LST, NDVI and ETa were also analyzed. The surface water availability showed high positive correlation with precipitation (0.76), LST (0.93) and ET_a (0.90). The surface water availability varied month wise, minimum surface water area was observed in May while maximum in January Availability of surface water increases NDVI and ETa thus decrease LST and vice-versa. Present results. would be helpful to planner and forest department to make decisions for water conservation activities in forest area.