Thalawathugoda Biodiversity Study Park (Diyasaru Park) – තලවතුගොඩ ජෛව විවිධත්ව අධ්‍යයන උද්‍යානය (දියසරු උයන)

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Thalawathugoda Biodiversity Study Park (now known as the Diyasaru Park) is an wetland artificially built near new Parliament Complex in Sri Jayawardanapura in a marshland. This park lies hidden behind the Parliament on the Japan Sri Lanka friendship road with only a small board visible to the road. Diyasaru Park covers approximately 60 acres with artificial ponds and canals where you could see over 50 varieties of migratory birds, over 15 fish varieties including three endemic to Sri Lanka and over 25 butterfly species. It is also home to few crocodiles and about five Fishing Cats (Prionailurus viverrinus) locally known as “Handun Diviya” and “Kola Diviya“.

Being a wetland, this park serves home to many other different animals and marshy plants, dragonflies, mammals, amphibians, reptiles and many terrestrial and aquatic plant species indicating a high biodiversity value especially highlighting the value of urban wildlife. It contains a study center, open study area, board walks for walking through the wetland, butterfly garden, bird watching tower and bird hide, ground water wells, a laboratory, a herbarium, children’s pond, wetland agriculture area, rush and reed pond, audio video room and boat riding facilities.

Originally this park was a paddy land. During the late 1970’s the parliament lake was created and this land was used to deposit dredge material and cultivation ceased. At present it serves as a flood detention area, absorbing flood water during heavy storms and contributes protect parliament area from being inundated. Some of its other benefits are lowering the city temperature, providing a place for students to conduct biodiversity practicals, and providing a recreational area for lovers of nature.

The park is open all seven days of the week from 6 AM to 6 PM.

Also See

Map of  the Thalawathugoda Biodiversity Study Park (Diyasaru Park)

ගූගල් සිතියම් පහලින් – Please click on the button below to load the Dynamic Google Map –

The map above also shows other places of interest within a approximately 20 km radius of the current site. Click on any of the markers and the info box to take you to information of these sites

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Traveling to Thalawathugoda Biodiversity Study Park (Diyasaru Park)

Route From Colombo  Thalawathugoda Biodiversity Study Park (Diyasaru Park)
Through : Rajagiriya
Distance : 12.5  km
Travel time : 30-45 minutes
Driving Directions : see on google maps


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