Sungai Slim (Ulu Slim)
Also known as: Sg Slim, Ulu Slim
Forested hills, Orang Asli village, waterfall rest stop; hot spring (Kolam Air Panas) start
Is there water?
Whether there is a river here on your dates, and what kind of water it is.
Rain-fed; higher and more technical (Gr 3-4) in wet season, mellow in dry
Best after rain; dry season lower and easier
Late Sep-mid Jan wetter/higher flow; runnable much of year (est). Confirm.
Warm tropical; Kolam Air Panas hot spring at meeting point
Flash rises after rain; 4WD access track can be affected
Grade & who can come
A river changes grade with its level. These grades describe a normal flow - in flood the same run is harder, and often a different run entirely. Check the gauge before you commit.
Grade 2-3 (Xventure lists Grade 3-4; individual rapids to Class III-IV)
Rafting (paddle raft)
Single day run; body-surfing and waterfall rest stop built in
Some experience helpful; popular KL/Ipoh team-building; operator groups min ~5 pax
The run
Rocky narrow channels, tight turns, cascading rapids ending in pools; grade rises at high water
Rocky shallow pools, tight channels; possible strainers (est)
Ulu Slim run (Kolam Air Panas hot spring area downstream)
Moderate; popular near-KL team trips and weekends
Access & shuttle
Operator package ~RM160 pp (min 5 pax) incl. 4WD, gear, guide, lunch. Confirm.
Permits and operators change - confirm before booking.
Meet at Kolam Air Panas Ulu Slim; 4WD transfer up to put-in near Ulu Slim village; ~6 km to take-out
~1.5 hr from KL to Slim River; 4WD off-road transfer to put-in included
PFD, helmet, paddle provided; snacks/drinks at rest stop; mobile coverage limited in valley (est)
Slim River town; Ulu Slim; Tanjung Malim; KL/Ipoh hubs
Hazards & exits
Rocky river with tight channels; grade rises sharply after rain; conflicting operator grades (2-3 vs 3-4)
4WD track and road access; guide first-aid; short run
Guides provided; guided only
This profile is desk research, compiled from public sources - not a first-hand river run report. Coordinates are approximate.