This is around 40Kms from bangalore. If you are living towards the south of bangalore, take the Mysore road. After kengeri, take right through the road beside Sri Rajarajeshwari engineering college. The road intially is good but get pathetic later. Dont expect any speed greater than 20Kmph. You will reach great banyan tree and
if you
travel further you need to take a right at some circle. You can enter the dam through the front gate with permission (for this travel through the tar road section. Also road gets really good when you are about to reach this place) or take the side route (this is scenic) for which you would have to take a right turn through a muddy road section. During rainy season you have small stream flowing to the dam and it makes an ideal place to have bath and some scenic mountaineering.