In KZN we generally don’t do our fly-fishing for Trout in big strong rivers. As a result there is not a lot written about wading and wading safety or difficulty in these parts. But of course at this time of the year, it is not impossible to find yourself on a fast piece of water, that is still clean enough for you to want to fish it.
Generally the Umgeni is unfishable from a water colour perspective, if it is too fast to wade. The Mooi, and the Bushmans on the other hand, can run a pale slate grey colour, with lots of white water, and be fishable. Fishable that is, with a fair amount of lead on the business end, if you are working a nymph.
And as I have written elsewhere, our KZN rivers are not as easy to wade as those of the North Eastern Cape, where one has the luxury of long gravel beaches and spurs to wade along. The Mooi has many stretches of nasty angled rock, tossed into runs like those “dolosse” on a breakwater. Sharp angled pieces, that scatter the river bed, with deep crevices and holes between them. Then on the upper Bushmans there are stretches where the water’s edge signals a vertical drop into the river channel, and in high water to step off there would see you in 4 ft of fast flowing water.