Waters & words

Posts tagged “Inzinga River

Lessons from the landscape: the 1600m contour

Here in the KZN midlands, altitude is accepted as a defining criteria for Trout water. It has long been held that trout will survive above 1200meters above sea level, and there is very little fishable water above 1800metres.   So within that band of 1800m down to 1200m, there are a few critical bands, and I would argue that one of them is the 1600m band.  I say that because every listed trout stream in these parts rises above 1600m.

So here is where that contour runs along the front of the Drakensberg:

The 1600m contour in KZN

Interesting isn’t it!

For me what makes it fascinating is that:

  • It shows deeply incised valleys where streams cross the line remarkably close to the escarpment
  • It shows that ridge of high ground that runs out into the province from the end of Giants Castle to Inhlosane mountain, very clearly
  • And from the few spot heights I threw in on the map above, you will see that there are many islands of ground above 1600m, many of which are a long way “from the mountains”.

One also  quickly concludes that the altitude alone is a poor measure of where trout thrive.  In studying a map in detail, you come to realise that trout will survive and indeed thrive in stretches of river at low altitudes where the valley sides rise to much higher altitudes, and cool short tributaries contribute to the river (Examples, The Inzinga and the Umgeni).  Also, if the drainage upstream of where you are standing is overgrazed or densely inhabited, or intensely farmed, then altitude becomes a less significant measure ( Example, The Bushmans below 1400m …below the clinic).  Also, if the stream is on a steeply drained area, where the cold fronts coming from the south west are forced up to generate orographic rainfall, the trout are better off.  So, for example, south of Giants Castle, the 1600m contour averages about 130 kms from the sea. North of the Hidcote ridge, where the berg tracks north, north-west, the sea is an average of 175 kms from the sea, and over 200kms in many cases.  Here it is drier, there are a lot fewer trout streams, and those that there are, have just a short run in the berg before they spill out onto flatter, warmer plains where they don’t hold Trout.  In fact, down south (and off below the limits of the map above), we know that in the Ingeli mountain area, trout are found as close as 80km from the sea at altitudes of under 1000m.  There the slope from the sea to Ngeli mountain is 25m per km.   From a similar altitude on the Mlambonja at Cathedral Peak, to the sea, the slope is under 8m per km.  Those southern areas get more life-giving mist and drizzle.  Did you ever notice how there are no thorn trees along the N3 from Maritzburg to Hidcote, then on the Estcourt side of Hidcote (the dry side), you can draw a line where the thorns start. Thorns like drier , and/or warmer climates.

Returning to our 1600m contour:  At a glance, it is encouraging to see how much land above this contour is in the Drakensberg park, and therefore conserved as catchment area.  The exception is where the land juts out from Giants Castle.  Parts of that area (top end of Dargle, Inzinga, Fort Nottingham, Western side of Kamberg etc) have at times been threatened by proposed developments. (I hope you will join me at the protests if they try again). 

 

See you in the highlands……above 1600 metres perhaps….


Hope and despair

There are two river valleys I know in Trout country  that cause me despair. There are two others that give me hope.

Let’s get the despair out of the way.

If you have ever driven up the lower Pitseng pass from the turnoff outside Mt Fletcher, up to Vrederus on the plateau below Naude’s Neck Pass , you may have noticed the stream running parallel to the road for a long way. Perhaps you did not. You could be forgiven for not noticing it, because if truth be told, you seldom see it. It is completely inundated with wattle trees. That stream is the “Luzi”, a Trout stream of not insignificant flow, which takes it’s size from the Bradgate Stream and the Swith that flow down from Naude’s.

 

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Looking down the Swith….wattle trees barely visible downriver on the main river

From just below the confluence of the Swith and the Bradgate, just across from Vrederus, the wattle infestation begins. From there it persists for about twenty kilometers. Yes, you heard right 20!  Twenty ‘kays’ of remote stream in a steep river valley, inaccessible and supposedly untouched. Twenty kilometers that could be a special, barely fished trout stream that could easily have supported a “trout fisherman’s lodge”, one can dream.  But it is a disaster, and seemingly an insurmountable one.

Similarly remote and infected is the Inzinga here in KZN. As you drive through from Notties to Lotheni you cross first its two  tributaries the Kwamanzinyama and the Rooidraai, and then the river itself. The main river is shrouded by life sapping wattles, well into the mountains above the road, and  a look across the drainage basins of the kwamanzinyama and Rooidraai reveals the same.  It then goes through a relatively clear patch below the water fall. More dire is the stretch out of sight below that in a steep sided gorge were the aforementioned  streams join the Inzinga. This problem is far from the view of any passer-by, and beyond the reach of any vehicle like  a TLB  or tractor that might prove essential in  a clean-up job.

 

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Looking up the wattle infested  Inzinga valley, the Kwamanzinyama coming in from the right in the distance

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The infestation continuing downstream…..

In all honesty a clean up job on the aforementioned streams would be of a magnitude that renders it impossible. I am trying not to be negative, but one has to be realistic. It doesn’t help that neither stream is upheld as a revered destination for fly-fishermen or anyone else for that matter. There really isn’t anyone who cares enough about these two, to even contemplate a clean-up on either. The human race has abandoned these once beautiful streams.

“A world of wounds”  said Aldo Leopold….  Despair!

Onto brighter things:

The upper Mooi river once had a severe wattle infestation. The invaders had crept up onto private land within the Kamberg reserve. When that land was expropriated in the late eighties/early nineties, it was ostensibly to incorporate it into the greater park, and commence with the restoration of the landscape. (It so happens that my first job after the army was for a small company that was called upon to contest the valuation used by the state in the expropriation, and I therefore had occasion to visit the property , having previously done so as a school-child as early as 1983. I use the word “ostensibly” because looking back at my fishing photos to as recently as 2005, the area was still in a poor state.

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Wattle infestation, Game Pass 2005.

Somehow, however, they got it right. Walking through there now, to go fishing, you wouldn’t know what it used to look like, or have any clue of the transformation, unless you happen to know your veld grasses. The landscape is restored!

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Further downstream, farmers have worked to clear wattle of their own volition, and apart from one severe infestation of just over a kilometre of river bank, things are largely under control. The Mooi River is revered as a fly-fishing destination, and it is highly unlikely that it will be lost forever to a severe wattle infestation. As I write, the fishing club I belong to is mustering its resources to go and do routine wattle removal on the Mooi, before it gets out of control.  The efforts of the fishermen are not in isolation. One farmer, who owns large tracts of land in the valley, has done an enormous amount of work to clear wattle across many square kilometers in the catchment. He has done this without threat of fine, or for a state subsidy, or any such thing. I don’t know him, but one of these days I am going to stop in there, shake his hand, give him a bottle of whiskey and thank him from the bottom of my heart.

A man whose hand I have shaken in thanks for similar work is Don McHardy. I still need to get him that whiskey!  Don should be recognised as a hero. He owns a farm in the Dargle in the Umgeni River catchment, where for the last 6 years he has employed a dozed full time employees to remove alien plants. Gums, wattles brambles, and bug weed. I initially met Don on the roadside, when I stopped to introduce myself and thank him for work he was doing on the bank of the river opposite Chestnuts. It turns out it is not his property, but that he was clearing it for his neighbour…..seemingly as some sort of pro bono favour. Last week I went and had coffee with Don and had occasion to traverse his farm to get to the farmhouse. Wow! Just “Wow”!  Hectare upon hectare of pasture and grassland, with the only evidence that it was once infested with scrub is the blackened tree stumps. Clear streams run strong through areas of thick grass cover. Don’s favour to 6 million inhabitants of the catchment lower down, is so far unrecognised.

 

Don and I discussed re-grassing and burning and spraying, and he divulged valuable information that will help the WWF work being done upstream of him on the Furth and the Poort…..two major tributaries of the Umgeni.

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WWF work along the banks of the Furth stream pictured here on the 25th August 2017.

It will also be helpful to the Natal Fly Fishers Club work on the main river, which enters its second phase (#BRU2).

After D

The Umgeni and the Mooi have already been variously transformed, and maintained, and they have strong advocates that will see that it continues.

Hope.