There is a observatory and you can also access to the basin.
Kosuge Shiraito Falls (小菅白糸の滝) is located in Kosuge, prefecture. It is 36m tall. The height of the fall is very high, but the amount of water is not that a lot. It is nice and quiet falls.
Tourist Info.
There is parking and restroom.
Access
need a car. Kosuge is reached by driving route 139.
1 hr.
New Wave Samurai Movie. 
映画好き集まれ！ 
There is a observatory and you can also access to the basin.