3D risk map (whole delta)

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Based on the modeling results, we constructed maps of average probability (for 0-50 m and for 10 m depth intervals). The maps indicate if and where arsenic concentration in the groundwater below or above the WHO guideline value (10 µg/L) can be expected. These maps can be a useful resource for mitigation of arsenic since they indicate where and at which depths tube wells can be expected to produce low arsenic groundwater. We could also use these probability maps in combination with measured As concentrations, to indicate vertically migrated arsenic from shallower Holocene aquifers into naturally uncontaminated Pleistocene aquifers.

For details see Winkel et al., PNAS, 108, January 2011 [...]

Arsenic risk map based on 3D geology		Arsenic risk maps at depth [pdf]
Stacked 3D distribution of arsenic risk [pdf]		Probability of arsenic contamination (0 to -90m) [pdf]