Luni river is a classic example of ephemeral river which flows during the monsoon season only, and remains dry throughout the year. Ephemeral rivers system plays a major role in groundwater recharge through their channels.
For reference see the dates on which pictures were taken.
Sand sheet in the extreme western part of Rajasthan, India
Sand dunes of Suratgarh, Bikaner
Thin crust of salt deposited on the lake bed after evaporation of saline water.
Image: Lunkarsar lake, Bikaner
Collecting stable isotopes samples of surface water body in Nagaur district
(23.491525, 70.495106)