Allum River
| Allum River | ||
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| Data | ||
| location | New South Wales , Australia | |
| River system | Hawkesbury River | |
| Drain over | Nattai River → Wollondilly River → Coxs River → Warragamba River → Nepean River → Hawkesbury River → Tasman Sea | |
| source |
Nattai National Park 34 ° 17 ′ 50 ″ S , 150 ° 16 ′ 36 ″ E |
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| Source height | 752 m | |
| muzzle |
Nattai River in Nattai National Park Coordinates: 34 ° 13 ′ 45 ″ S , 150 ° 21 ′ 5 ″ E 34 ° 13 ′ 45 ″ S , 150 ° 21 ′ 5 ″ E |
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| Mouth height | 185 m | |
| Height difference | 567 m | |
| Bottom slope | 49 ‰ | |
| length | 11.6 km | |
The Allum River is a small river in the east of the Australian state of New South Wales .
It rises in the southwest of the Nattai National Park , flows to the northeast and flows into the Nattai River .
The river runs completely in the uninhabited national park and is not accessible by roads.