I don't think I need to say anything after above photo regrading devkund waterfall. By far its best waterfall to visit in monsoon and post monsoon season near pune and mumbai.
Devkund waterfall is situated in Bhira patnus village. It said to be origin of Kundalika river. Its 110km from pune, 170 km from mumbai and 52 km from lonavala, which makes it ideal one day picninc spot.
How to reach :
Private vechicles like car, bike etc are best option to reach base village bhira. If you are coming via private vehicle, in that case type "Bhira power plant" on maps which is just 2 km before starting point of trek and ask local for direction, Also download the map already of route as once you enter tamhini ghat section, there will no network.
If you are coming via public transport then you need to reach karjat station, then catch a bus to pali (1 hour from 6am frequency) and then catch bus to bhira from pali ( frequency is quite lower total 2-4 buses in day)
My experience :
We visited devkund waterfall on Wednesday 28 June 2018, total 6 people in hired car. We left pune around 9 am , rain was playing hide and seek throughout the route. Tamhini ghat section look like heaven on earth in monsoon season, as it was weekday less crowd and traffic compared to weekends. It becomes extremely crowdy in weekends.