The Apies River is a narrow, pool-drop waterway located north of Pretoria, South Africa, flowing northward through farmland before eventually draining into the Pienaars River. The paddleable section described here begins approximately 20km north of Pretoria and covers 16km, typically taking 6 to 8 hours to complete. The river is rated Grade 1 to 2, making it suitable for inexperienced paddlers, though some spots require tight maneuvering that can be challenging in a K1 kayak.

The put-in is at a bridge near the Rooiwal Power Station, and the take-out is at Pro-Act Ventures, which operates commercial trips on the river and also provides facilities for self-supported paddlers. Paddlers should obtain permission from Pro-Act Ventures before launching. Flow is regulated by the Bon Accord Dam upstream, which ensures water is present year-round. Water levels are typically at their highest in January and February, during the peak of the summer rainy season.

The river character consists of long flat pools interspersed with easy rapids. There are a few strainers to watch for, though these are generally manageable at normal water levels. Several weirs and remnants of low-level bridges are present along the route and are not overly difficult to negotiate under normal conditions. Two bridges between the put-in and take-out provide additional access points along the way.

The section can be loosely divided into three stretches. The first, from put-in to the first bridge, is the least eventful and takes roughly 2 to 3 hours. The middle stretch, between the first and second bridges, offers the most variety and takes 3 to 4 hours if paddlers take time to play. The final stretch to the take-out runs about an hour. The surrounding farmland is pleasant, and local farmers are reported to be welcoming toward paddlers.

The river's name derives from the Afrikaans word "apies," meaning "small monkeys," a reference to the vervet monkeys historically abundant along its banks. The river holds considerable cultural and historical significance to the Pretoria region, with multiple indigenous names and associations tied to the area's pre-colonial history.