Thelgamu oya

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Thelgamu oya flows into Amban Ganga , which it joins at N 7° 40′ 43″, E 80° 45′ 43″ at OSM node n3324755617, and there 107 km of total upstream flows in. load it's distributaries

Thelgamu oya has 2 tributaries.

• (unnamed), which joins it at N 7° 36′ 10″, E 80° 46′ 30″ at OSM node n4085478567, and 8 km of total upstream flows in.
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• (unnamed), which joins it at N 7° 31′ 32″, E 80° 45′ 41″ at OSM node n4085478144, and 2 km of total upstream flows in.
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