Uppu Aru Lagoon

LocationJaffna District, Sri Lanka

Coordinates9°41′N 80°05′E / 9.683°N 80.083°E / 9.683; 80.083

TypeLagoon

Primary outflowsJaffna Lagoon

Uppu Aru Lagoon
Uppu Aru Lagoon Show map of Northern Province Uppu Aru Lagoon Show map of Sri Lanka
Location	Jaffna District, Sri Lanka
Coordinates	9°41′N 80°05′E / 9.683°N 80.083°E / 9.683; 80.083
Type	Lagoon
Primary outflows	Jaffna Lagoon
Surface area	30 square kilometers (12 sq mi)
Max. depth	3 meters (9.8 ft)
Surface elevation	Sea level

Uppu Aru lagoon is a lagoon in Jaffna District, northern Sri Lanka. The lagoon separates the Valikamam region from the Thenmarachchi region.

The lagoon is linked to Jaffna Lagoon by a short channel to the south. The lagoon's water is brackish.^{[citation needed]}

The lagoon is surrounded by a densely populated region containing palmyra palms, coconut plantations, grassland, rice paddies and extensive vegetable gardens.^{[citation needed]}

The lagoon has extensive mudflats and salt marshes. It is surrounded by mangroves, particularly Avicennia. The lagoon attracts a wide variety of water birds including American flamingoes, ducks, garganey, black-tailed godwit and other shorebirds.^{[citation needed]}