Table 2.

Analyses of water samples from the dam area at Carsington Dam, 1984 (from British Geological Survey 1984)

ParameterDam, Ch. 720Dam, Ch. 825Main borrow pitMain borrow pit
Toe pitToe pitTrenchSurface pool
pH6.57.83.12.6
Fe (mg l−1)0.250.0512.55200
Ca (mg l−1)29415125220
Al (mg l−1)0.081.0331300
Mg (mg l−1)10.8108851250
K (mg l−1)2.910.95.92.0
SO3 (mg l−1)5593071019900