The mean elevation above sea level is approximately 1,525 meters, with the highest point at 1,542 m and the lowest at 1,473 m, the dam’s outflow in Sesmylspruit.

[5] Birds commonly encountered include colonies of southern masked-weaver, the invasive common myna and conspicuous pied crow, buffy pipit, blacksmith and crowned lapwing on short or burnt grassland, and Cape longclaw and rufous-naped lark in denser grassland or shrubby areas.

Black-shouldered kite, spotted thick-knee, cattle egret, helmeted guineafowl, Swainson's spurfowl, African palm-swift, southern red bishop, anteating chat, stone chat, capped wheatear, fork-tailed drongo and pied starling are resident or regularly seen species.

Some special or less commonly seen species are Alpine swift in winter, African yellow warbler in shrubs along the flood plain, great crested grebe and maccoa duck at the dams, African cuckoo hawk, Peregrine falcon, red-throated wryneck and orange-breasted waxbill.

Cheetah, blesbuck, black wildebeest, red hartebeest, eland, common zebra, waterbuck, reedbuck, springbuck, mountain reedbuck, steenbok, grey duiker, oribi, leopard, buffalo, and hippopotamus can all be found in the reserve.