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.
The correct pairs are the Welspun Solar MP project- Madhya Pradesh, Pavagada Solar Park- Karnataka, Bhadla Solar Park- Rajasthan, Kamuthi Solar Power Project- Tamil Nadu.