Mundel Lagoon

Mundel Lagoon
Mundel Lake or Mundalama Wewa (Sinhala: මුන්දලම වැව; Tamil: முந்தல் குடா) is a shallow brackish water lagoon located in Puttalam District, Sri Lanka.

Physical, ecological features & Climate
The lagoon covers approximately 3,100 ha of area fringed by mudflats, salt marshes, sand dunes, and mangrove clusters (IUCN & CEA, 2006). It is completely cut off from the sea by a narrow sandbar at Udappuwa and is connected with the Puttalam estuary at the northern end through a long and narrow channel system, the Dutch Canal (IUCN & CEA, 2006; Jayasiri et al., 1998). The length of the Dutch Canal from Puttalam Lagoon to Mundel Lake is 16 km and its width is about 10 m (Jayasiri & Rajapaksha, 2000). Freshwater enters the lagoon through a seasonal river named Battulu Oya (Jayasiri et al., 1998). The surface area of the lake is approx. 30 km² at the local mean sea level and the mean depth is about 0.75 m (IUCN & CEA, 2006; Jayasiri & Rajapaksha, 2000).

The lagoon is located within the dry zone of the country and experiences two rainy (April-June and October-November) and two dry periods per year (IUCN & CEA, 2006). The average annual rainfall is 1,000-1,500 mm and the temperature is uniform at around 30.4-33.6 ℃ (IUCN & CEA, 2006).

The wetland is mainly used for fisheries and prawn farming and as a result of the excessive utilization of the resources beyond the sustainable limit, the wetland system has been disturbed today.

1) PSX 20200516 163950 by Sithu Gurl is licensed under CC BY-SA 4.0

1) IUCN & CEA, 2006. National Wetland Directory of Sri Lanka. IUCN Sri Lanka and the Central Environmental Authority. Colombo, Sri Lanka. ISBN: 955-8177-54-7. pp.173-177.
2) Jayasiri, H.B., Rajapaksha, J.K., Rydberg, L. and Cederloef, U., 1998. The Mundel Lake estuarine system, Sri Lanka; possible measures to avoid extreme salinity and sea level variations. Ambio, 27(8), pp.745-751.
3) Jayasiri, H.B. and Rajapaksha, J.K., 2000. Salt and water balance in the Mundel Lake: a strongly choked coastal lagoon. The National Aquatic Resources Research & Development Agency. pp.12-25 

Location Map
This page was last updated on 14 September 2022

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