The correct matches are Vajrai Waterfall- Urmodi river (Maharashtra), Barehipani Falls- Budhabalanga River (Odisha), Dhuandhar Falls- Narmada (Madhya Pradesh), Kunchikal Falls- Varahi river (Karnataka).
The main aim of the watershed management strategy of India is to maintain the ecological balance by harnessing, conserving and developing degraded natural resources such as soil.