It occurred to me that a relatively cheap way of increasing our water storage capacity is being overlooked.
Most of our storage dams are shallow, with a shape similar to a saucer, resulting in shallow depth with large surface area resulting in high evaporation rates.
Using a couple of bulldozers, why don't we drop the ground level of the currently exposed areas so the cross-section of the dams is changed from the saucer profile to that of a soup bowl?
Same surface area, greater depth.
The nutrient rich soil removed could be sold to generate revenue and next time the dams fill, we won't have to open the sluices quite so quickly.