VEGETATED POND MODELS TO IMPROVE INFILTRATION RATE WITH RAINFALL INTENSITY VARIATIONS

Changes in the function of the catchment area as a means that can accommodate excess water during the rainfall requires a way to increase infiltration capacity, among others by modeling the vegetation recharge pond with the variation of rainfall intensity and how the tree root effectiveness in improving the function of absorption. This research was conducted experimentally in laboratory with physical model to observe pond with root vegetation on infiltration rate on soil surface due to variation of rainfall intensity (I) and duration of time (t). The results showed rainfall Intensity 5 year (I5) = 246.841 mm/h, I10 = 290.335 mm/h, and I25 = 344,900 mm/hr with four different root cover variations 1 st Model 2 nd Model and 3 rd Model increment of infiltration rate is significant where pond without vegetation cover has lower infiltration capacity than the variation of 1, 2 and 3 models which increases.. For the highest level of soil infiltration is in the intensity of rainfall I5 without using tree media and decreased at the intensity of I10 and I25.