Source RAMSAR sites :https://rsis.ramsar.org
Source "Protected Areas" :World Database on Protected Areas (WDPA), a join project of IUCN and UNEP - March 2018
Source Dams Data Base - GRanDv1 : Lehner, B., C. Reidy Liermann, C. Revenga, C. Vorosmarty, B. Fekete, P. Crouzet, P. Doll, M. Endejan, K. Frenken, J. Magome, C. Nilsson, J.C. Robertson, R. Rodel, N. Sindorf, and D. Wisser. 2011. Global Reservoir and Dam Database, Version 1 (GRanDv1): Dams, Revision 01. Palisades, NY: NASA Socioeconomic Data and Applications Center (SEDAC). SEDAC
Source Rainfall :WorldClim Version 2 - Mean average rainfall (mm) -period 1970-2000 resolution 5 minutes (approx 100 km2)
Source Population Data Base: Center for International Earth Science Information Network - CIESIN - Columbia University. 2017. Gridded Population of the World, Version 4 (GPWv4): Population Count, Revision 10. Palisades, NY: NASA Socioeconomic Data and Applications Center (SEDAC) Accessed 23 Feb 2018. These data were treated afterwards by Rivers Network to fit with river basin limits and formated for web maps purposes. The density ranking is based on the DN values from SEDAC data base.
The Mahaweli River Basin covers 10,000 km2, one-sixth of Sri Lanka’s land area. The river supplies water for irrigation and hydropower generation, as well as meeting the water demands of urban and industrial areas in the basin.
The Mahaweli Ganga Development Programme, the largest integrated rural development multi-purpose programme ever undertaken in Sri lanka was based on water resources of Mahaweli and allied six river basins. Main objectives were to increase agricultural production, Hydro-power generation, employment opportunities, and ,settlement of landless poor and flood control.