156 lakes selected from NASA global-scale databases and 50 lakes located in developed countries.
53:
Lakes presumed to merit the most attention in 206 lakes
Weight Set
Set A
Relative weights for drivers developed based on collective opinions of a wide range of disciplinary expertise
Set B
Relative weights for drivers assessed by representatives at 15th World Lake Conference (2014)
Grid Type
100km Band_around Lake:
An areal band determined as a realistic upper boundary of the basin area
No Band:
No boundary of the basin area is in the lakes analyses
Criteria Reduction
All:
23 drivers derived by Vörösmarty et al (2010) for the relative threats
Routed Drivers:
10 drivers routed through the river network and influenced by aquatic processes and conditions
Catchment disturbance:
4 drivers grouped under the thematic area of Catchment Disturbance
Water Resources:
6 drivers grouped under the thematic area of Water Resources Development
Biotic Factors:
4 drivers grouped under the thematic area of Biotic Factors
LAKE BASIN SCENARIO ANALYSIS
Lake Basin Scenario Analysis is a methodology developed to integrate and analyze the relative data in order to rank the transboundary lake threats. And the Interactive Scenario Analysis Program that allows users to select the drivers to be considered for the analyses, and the appropriate weights for the drivers, provides realistic contexts for evaluating the threat ranking results.
The threat ranks are then expressed in terms of the calculated Human Water Security (HWS) and Biodiversity (BD) scores.
The transboundary lakes assessment has highlighted that determining the true significance or meaning of a ‘threat’ to a transboundary lake is not simply a matter of examining a computed threat score or rank.
In fact, the development of the Scenario Analysis Program for determining the relative transboundary lake threat rankings is considered to be as important as the actual ranking results themselves.
It provides a means to select the transboundary lakes of concern, to decide which drivers to consider and which weights to assign to them, and to select which criteria could provide the most appropriate context for the ranking results.
Thus, maximizing the meaning of the computed threats to transboundary lakes requires the user of the ranking results to determine an appropriate context(s).
