Authors
Nathan Jay Baker, Richard Greenfield
Description
The Nyl & Mogalakwena rivers are under pressure from increased urbanisation, industrial development, mining and agriculture. Results from low flow sampling showed that the Modimolle STW is severely affecting the water quality, nutrient loads and the macroinvertebrate taxa present within these systems. Fifteen families were present at STW, while JASP, 8km downstream, had 28 families present. Water nutrient data at JASP was worse than that of STW, perhaps due to a lower pH. Macroinvertebrate families at each of the site correlate with that of water nutrient data, identifying STW as having significant impacts on water quality and other downstream sites.