Ombla River
The Ombla River is a short river near Dubrovnik, Croatia, flowing from a karst spring to a nearby ria.
Also known as: River Ombla
How big is it?
30 m · approximate surface-course length
Also 98.43 ft
Approximate surface-course length · approximate
Typical recorded range: 25 m to 35 m.
A little perspective
Ombla River vs Giant kelp plant: length comparison
The surface-course length of the Ombla River is approximately equal to the full thallus length of a giant kelp plant.
The Ombla River is a short river near Dubrovnik, Croatia, flowing from a karst spring to a nearby ria.
Giant kelp is a large brown alga that grows from the seafloor and can form dense underwater forests.
Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions. Horizontal rulers compare the selected spans; vertical brackets also identify height on the artwork.
Measurements, assumptions & sources +
Ombla River
Approximate surface-course length: 30 m; approximate; range 25 m–35 m.
The Ombla’s named surface course near Dubrovnik is approximately 30 m from karst spring to ria. Its much larger underground drainage system is excluded, making shortest-river comparisons convention-dependent.
UNESCO — Ombla spring catchment
The marked approximate surface-course length is calibrated. Unmeasured illustration details are representative.
Giant kelp plant
Representative full thallus length: 30 m; representative; range 20 m–45 m.
A representative mature giant kelp (Macrocystis pyrifera) thallus 30 m from holdfast to longest blade tip. Flexible fronds change shape with current, and a real holdfast anchors to rock rather than forming roots.
NOAA Ocean Service — Kelp forests
The marked representative full thallus length is calibrated. Unmeasured illustration details are representative.
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Why this measurement?
Why we use 30 m
We compare the surface-course length of the Ombla River. This is an estimate; check the notes for its rounding and uncertainty. The recorded range is 25 m to 35 m.
The Ombla’s named surface course near Dubrovnik is approximately 30 m from karst spring to ria. Its much larger underground drainage system is excluded, making shortest-river comparisons convention-dependent.
The marked horizontal span follows the measured feature, not the edges of the image. How calibrated comparisons work →
Recorded properties
Dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 30 m | 25 m to 35 m | approximate |
Around this scale
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Around the same scaleLiving thingsGiant kelp plant30 mRepresentative full thallus lengthGiant kelp is a large brown alga that grows from the seafloor and can form dense underwater forests.
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The source records and measurement method remain available for inspection.
- UNESCO — Ombla spring catchmentKarst spring and short named surface-course context near Dubrovnik.
There’s always another scale
Follow your curiosity.
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