Dry season flow is mostly dominated by input of groundwater from the two underlying limestone aquifers, Tindall and Oolloo (see Figure R6 below), which have an intervening siltstone aquitard.

Dry season flow is mostly dominated by input of groundwater from the two underlying limestone aquifers, Tindall and Oolloo (see Figure R5 below), which have an intervening siltstone aquitard.