The Ghaggar-Hakra River is an intermittent river in India and Pakistan that flows only during the monsoon season. The river is known as Ghaggar before the Ottu barrage and as the Hakra downstream of the barrage.[2] The Hakra river is hydraulically connected to the Nara River provided it has adequate flow to maintain surface flow.[3] After the construction of the Otu Barrage, the downstream Hakra river dried up fully but subsurface flow is maintained to the Nara river which becomes later the delta channel of the Indus River before joining the sea via Kori Creek in Gujarat state
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