Topuni River
| Topuni River | |
|---|---|
Route of the Topuni River | |
| Location | |
| Country | New Zealand |
| Region | Northland Region, Auckland Region |
| Physical characteristics | |
| Source | Hakaru River |
| • coordinates | 36°12′39″S 174°28′59″E / 36.2107°S 174.4831°E |
| Mouth | Oruawharo River |
• coordinates | 36°15′28″S 174°28′12″E / 36.2578°S 174.47°E |
| Length | 12 km (7.5 mi) |
| Basin features | |
| Progression | Topuni River → Oruawharo River → Kaipara Harbour → Tasman Sea |
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The Topuni River is a river in the upper North Island of New Zealand. From its source on the Hakaru River, it flows generally south, with most of its length being through a drowned valley in the northeast of the Kaipara Harbour system. The estuarine section of the river forms a part of the border between the Kaipara District of the Northland Region and the Rodney local board area of the Auckland Region. The Topuni River flows into Oruawharo River — an arm of the Kaipara — 10 kilometres northwest of Wellsford.