(f)
Figure 10 Spatial variation of rainfall during month of (a) May, (b) June, (c) July, (d) August, (e) September, (f) October
It can be depicted from the figure that in May, (Figure 10.a) there is a lot of variation of rainfall with space in the whole region; the amount of rainfall is as high as 552mm in Karimganj to relatively low precipitation amounting to only 125 mm in regions of Karbi Anglong. Middle Assam receives 125 mm-172 mm of rainfall while upper Assam receives 267 mm to 315 mm of rainfall. The region receives the maximum rainfall during the months of June-August and shows a large variation in amount of precipitation occurring in the region along with the space (Figure 10. b, c, d). The monthly average rainfall received during June and July is almost same and varies from 170 mm to 850 mm. regions close to Lakhimpur and Kokrajhar receives the maximum rainfall which amounts to 800 – 850 mm in each of the months of June and July, while in August the same district receives the rainfall of about 700mm. Districts of middle Assam receives relatively a lesser amount of rainfall (170 mm – 190 mm) when compared to districts like Lakhimpur and Kokrajhar. There is a significant decrease in the amount of rainfall received in October, as this month is considered as offset for monsoon in Assam. The Figures below show the spatio-temporal variation in the region during non-monsoon season i.e. November-April.