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Lake Songklah, Thailand  A study of the assemblage of water snakes was undertaken at Ban Tha Hin on the southeast side of Lake Songklah in southern Thailand (see map below). Lake Songklah is a 98,000 hectare wetland complex, composed of three shallow basins. There is considerable evidence to suggest that Lake Songklah has formed as the result of a series of barrier islands enclosing a bay with the help of humans, over the past 150 years. Snakes were captured using funnel traps set along the edges of klongs and ditches. The most common snake in the study area is the rainbow water snake (Enhydris enhydris) and a mark-and-recapture and radio telemetry study was undertaken on this species. This  snake restricts its activity to the edges of the wet meadow in ditches, pools, and klongs. The plumbeous water snake (Enhydris plumbea) and the masked water snake (Homalopsis buccata) were also trapped in the study area but in much smaller numbers.
Some of the results of this work appear in the following publication: Karns, D. R.; Voris, Harold K.; Chanard, T.; Goodwin, J. C.; Murphy, J. C. 2000. The Spatial Ecology of the Rainbow Water Snake, Enhydris enhydris (Homalopsine) in Southern Thailand. Herpetological Natural History, 7(2): 97-115.
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