Table 1: Wetlands, Aruba (December 1, 2004; 10:00 a.m.)
Water temperature: 86 degrees Fahrenheit (30 degrees Celsius)
pH: 7.7
Microsiemens: less than 1999
Hardness calculated: 78 dH (+/- 10%)
Hardness calculated: 560 mg/l (+/- 10%)
Calcium: 130 mg/l (+/- 6%)
Magnesium: 260 mg/l (+/- 5%)
Iron: (0.06 mg/l) (+/- 15%)
Strontium: 4.8 mg/l (+/- 5%)
Potassium: 110 mg/l (+/- 5%)
Sodium: 3,300 mg/l) (+/- 5%)
Manganese: (0.01 mg/l) (+/- 50%)
Table 2: Rooi at Bringamosa, Aruba (November 30, 2004; 11:30 a.m.)
Water temperature: 86 degrees Fahrenheit (30 degrees Celsius)
pH: 8.0
Microsiemens: greater than 1999
Hardness calculated: 31 dH (+/- 10%)
Hardness calculated: 220 mg/l (+/- 10%)
Calcium: 78 mg/l (+/- 6%)
Magnesium: 88 mg/l (+/- 5%)
Iron: 0.65 mg/l (+/- 7%)
Strontium: 0, 58 mg/l (+/- 5%)
Potassium: 12 mg/l (+/- 5%)
Sodium: 790 mg/l (+/- 5%)
Manganese: 0.26 mg/l (+/- 10%)
Table 3. Rooi east of Willemstad, Curacao (December 3, 2004; 8:00 a.m.)
Water temperature*: 75.2 degrees Fahrenheit (24 degrees Celsius)
pH: 7. 9
Microsiemens: 897
Hardness calculated: 9.3 dH (+/- 10%)
Hardness calculated: 67 mg/l (+/- 10%)
Calcium: 37 mg/l (+/- 6%)
Magnesium: 18 mg/l (+/- 5%)
Iron: 0.11 mg/l (+/- 10%)
Strontium: 0.56 mg/l (+/- 5%)
Potassium: 5.9 mg/l (+/- 5%)
Sodium: 94 mg/l (+/- 5%)
Manganese: 0.08 mg/l (+/- 15%)
*With heavy rain during the night
Table 4: Rooi in Saliña, Willemstad, Curacao (December 4, 2004; 1:00 p.m.)
Water temperature: 86 degrees Fahrenheit (30 degrees Celsius)
pH: 8.1
Microsiemens: greater than 1999
Hardness calculated: 35 dH (+/- 10%)
Hardness calculated: 250 mg/l (+/- 10%)
Calcium: 85 mg/l (+/- 6%)
Magnesium: 100 mg/l (+/- 5%)
Iron: 0.36 mg/l (+/- 7%)
Strontium: 0.29 mg/l (+/- 5%)
Potassium: 6.7 mg/l (+/- 5%)
Sodium: 340 mg/l (+/- 5%)
Manganese: 0.01 mg/l (+/- 50%)
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