Browsing downloads in "Bangladesh: DPHE/BGS National Hydrochemical Survey"

The aims of the survey were to: make maps showing the regional distribution of arsenic and other elements in Bangladesh groundwaters and provide estimates of the percentage of wells exceeding various limits for arsenic and other elements.

Arsenic
Point-source and smoothed maps
[Adobe Acrobat PDF 370 KB]
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Arsenic (6 thresholds)
Point-source and smoothed maps
[Adobe Acrobat PDF 1.40 MB]
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Arsenic (health)
Point-source and smoothed maps
[Adobe Acrobat PDF 369 KB]
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Arsenic (smoothed)
Point-source and smoothed maps
[Adobe Acrobat PDF 367 KB]
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Arsenic vs manganese
Element combinations and ratios
[Adobe Acrobat PDF 369 KB]
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Barium
Point-source and smoothed maps
[Adobe Acrobat PDF 368 KB]
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Boron
Point-source and smoothed maps
[Adobe Acrobat PDF 369 KB]
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Calcium
Point-source and smoothed maps
[Adobe Acrobat PDF 359 KB]
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Depth of wells
Point-source and smoothed maps
[Adobe Acrobat PDF 366 KB]
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District mean As concentration
Point-source and smoothed maps
[Adobe Acrobat PDF 473 KB]
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Hardness
Point-source and smoothed maps
[Adobe Acrobat PDF 369 KB]
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Hardness (smoothed)
Point-source and smoothed maps
[Adobe Acrobat PDF 374 KB]
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Iron
Point-source and smoothed maps
[Adobe Acrobat PDF 370 KB]
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Iron (smoothed)
Point-source and smoothed maps
[Adobe Acrobat PDF 369 KB]
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Large, coloured point-source arsenic map for printing
This map displays point-source arsenic data and includes detailed administrative boundaries (to upazila level), basic geology, rivers etc and is best printed at A2 size (height=59.4 cm, width=42.0 cm) or larger.
[Adobe Acrobat PDF 2.67 MB]
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Log Arsenic-Iron
Point-source and smoothed maps
[Adobe Acrobat PDF 370 KB]
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Magnesium
Point-source and smoothed maps
[Adobe Acrobat PDF 369 KB]
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Magnesium/calcium ratio
Element combinations and ratios
[Adobe Acrobat PDF 353 KB]
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Manganese
Point-source and smoothed maps
[Adobe Acrobat PDF 364 KB]
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Manganese (health)
Point-source and smoothed maps
[Adobe Acrobat PDF 370 KB]
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Manganese (smoothed)
Point-source and smoothed maps
[Adobe Acrobat PDF 369 KB]
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Manganese/iron ratio
Element combinations and ratios
[Adobe Acrobat PDF 374 KB]
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Phosphorus
Point-source and smoothed maps
[Adobe Acrobat PDF 370 KB]
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Potassium
Point-source and smoothed maps
[Adobe Acrobat PDF 369 KB]
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Potassium/sodium ratio
Element combinations and ratios
[Adobe Acrobat PDF 353 KB]
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Sample locations
Point-source and smoothed maps
[Adobe Acrobat PDF 360 KB]
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Silicon
Point-source and smoothed maps
[Adobe Acrobat PDF 370 KB]
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Simplified geology of Bangladesh (after Geological Survey of bphase2/USGS (1990) map)
Point-source and smoothed maps
[Adobe Acrobat PDF 605 KB]
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Sodium
Point-source and smoothed maps
[Adobe Acrobat PDF 369 KB]
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Strontium
Point-source and smoothed maps
[Adobe Acrobat PDF 369 KB]
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Sulphate
Point-source and smoothed maps
[Adobe Acrobat PDF 370 KB]
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Surface geological unit
Point-source and smoothed maps
[Adobe Acrobat PDF 373 KB]
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Year of well construction
Point-source and smoothed maps
[Adobe Acrobat PDF 459 KB]
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Year sampled
Point-source and smoothed maps
[Adobe Acrobat PDF 364 KB]
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