River
Matanikau River
15 km from source to mouth · Solomon Islands.
Solomon IslandsFlows into Ironbottom Sound
In numbers
Length
15km
Average flow
8.9m³/s
Basin
412km²
Drop
6m
from 6 m to 0 m
Country
1
The journey
From source to mouth
15 km of river and 2 stops on the way: 2 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmSourceat 6 m
- 3 kmHoniara84,520 people
- 14 kmMalango15,560 people
- 15 kmIronbottom Soundat 0 m
Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.
River in the Solomon Islands
At the mouth it carries 8.9 m³/s on average: an Olympic pool every 280 seconds. Its basin covers 412 km².
Where to start
- HoniaraLargest city on its banks · 84,520 people
- Honiara International Airport (HIR)Nearest airport with scheduled flights, 12 km from the city
- On the water1 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
Plan the trip
Plan the trip: boat trips, a bed by the river, a car
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
Along the river
Matanikau River: what you find on the way
- 1Boat ramps
From OpenStreetMap, within 1.2 km of the river. Not mapped is not the same as not there.
Cross-checked with our atlases
Matanikau River in our other atlases
What our sister atlases know about the waterfalls on this river, the lakes it flows through, the beaches at its mouth, the mountains where it rises and the islands off its mouth.
7beaches at the mouth and on the banksCoastya
4mountains at the sourcePeakyas
Beaches (7)
At the mouth (25 km) and on the banks, by Coastya
- Trench’s Beach14 km away29.7°C
- Tenaru Beach6.4 km away29.7°C
- Rere Beach15 km away29.7°C
- Mbokona Bay8.5 km away · cove29.7°C
- Kua Bay7.9 km away · cove29.7°C
- Kotasi Bay7.2 km away · cove29.7°C
- Mbengena Bay23 km away · cove29.7°C
Mountains at the source (4)
Within 15 km of the source, by Peakyas
- Mount Vatunjae13 km away
- Mount Mbutohaina12 km away
- Mbelapoke Hill13 km away
- Mount Austen5.2 km away
From space
The source and the mouth, seen from orbit


Sentinel-2 cloudless 2016 by EOX IT Services GmbH (contains modified Copernicus Sentinel data 2016), CC BY 4.0. The glowing line is the river as drawn by RiverATLAS.
Where these numbers come from
| Name, length, places | Wikidata (Q349382) · CC0 |
|---|---|
| Course, profile, basin | RiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed along the river network from the point given by Wikidata |
| Flow | WaterGAP (RiverATLAS), 1971–2000 · CC BY 4.0 |
| Climate along the river | WorldClim (RiverATLAS), 1970–2000 · CC BY 4.0 |
| Towns, bridges, dams | Wikidata · CC0; GeoNames · CC BY 4.0 |
| Along the river | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
| Our other atlases | Coastya, Peakyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0; HydroLAKES · CC BY 4.0; NOAA OISST |
Every source and licence is on the data sources page.
The family
Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers or canyons?
Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.