HOW BIG
DiscoverRivers

Rivers

Sepik: size, dimension and comparison

The adopted reference is about 1,126 km.

course length ≈ 1 126 km

1,126 km = 1,126,000 m. A kilometer contains 1,000 meters.

Oceania · reference river course

Explore at this scale
Sepik, interpreted illustration
Interpreted illustration · dimension stated in the fact sheet.
Natural Earth (public domain)

What does this number measure?

The Sepik is shown in the Oceania group. The comparison follows a reference river course rather than the straight-line distance. The documented value is rounded; the choice of source, lakes crossed, meanders and river mouth can change the published length.

This length follows the course adopted by the catalogue. Maps show simplified, sometimes partial courses; an independent bar represents the documented length, distinct from straight-line distance.

Compare the stated dimensions

The comparison uses the number in each fact sheet: altitude, height, diameter, length or distance, depending on the reference. Two values in metres do not necessarily describe the same property.

Compare with Sobat–Pibor in the explorer →

Source and limitations

Approximate documentary length, dependent on the branches and route selected; this reference establishes neither a definite record nor kilometre-level precision.

Top-down view of a simplified geographical route of the Sepik, based on the available mapped segments. The reference drawing may be partial, and river systems may combine several branches. The river’s width and the water and bank textures are interpreted; this is not a satellite photograph. Only the lower bar represents the documented reference length; the width of the map above does not measure that length. Route: Natural Earth, public domain. Licence: Public domain.

Illustration sources

Natural Earth (public domain)

Source coverage: Generalized map of the available published segments; it may be partial and include several branches. The documentary length is compared with the separate ruler, not with the width of the map. The complete course has not received individual hydrological certification. Natural Earth, public domain. Modified visualization: projection, generalized source trace, interpreted water/bank texture; 2026-11-04.

Natural Earth (public domain)

Source coverage: Generalized map of the available published segments; it may be partial and include several branches. The documentary length is compared with the separate ruler, not with the width of the map. The complete course has not received individual hydrological certification. Natural Earth, public domain. Modified visualization: projection, generalized source trace, interpreted water/bank texture; 2026-11-04.

Natural Earth (public domain)

Source coverage: Generalized map of the available published segments; it may be partial and include several branches. The documentary length is compared with the separate ruler, not with the width of the map. The complete course has not received individual hydrological certification. Natural Earth, public domain. Modified visualization: projection, generalized source trace, interpreted water/bank texture; 2026-11-04.

Natural Earth (public domain)

Source coverage: Generalized map of the available published segments; it may be partial and include several branches. The documentary length is compared with the separate ruler, not with the width of the map. The complete course has not received individual hydrological certification. Natural Earth, public domain. Modified visualization: projection, generalized source trace, interpreted water/bank texture; 2026-11-04.