The Slate River is located in the northwest of the South Island of New Zealand. It is a tributary of the Aorere River.
| Slate River | |
|---|---|
 | |
 Route of the Slate River | |
.png)  Mouth of the Slate River   Slate River (New Zealand) (South Island) | |
| Location | |
| Country | New Zealand |
| Physical characteristics | |
| Source | |
| • location | Slate River Peak |
| • coordinates | 40°54′19″S 172°37′15″E / 40.9052°S 172.6209°E |
| • elevation | 1,527 metres (5,010 ft) |
| Mouth | |
• location | Ōtere River |
• coordinates | 40°45′47″S 172°42′36″E / 40.7631°S 172.7101°E |
| Basin features | |
| Progression | Slate River → Aorere River → Ruataniwha Inlet → Golden Bay / Mohua → Tasman Sea |
| Tributaries | |
| • left | Serpentine Creek, Whitehorn Creek, Kill Devil Creek, Snow River, Rocky River |
| • right | Fletcher Creek |