River
Ombrone
161 km from source to mouth · Italy.
ItalyFlows into Tyrrhenian Sea
In numbers
Length
161km
Average flow
32m³/s
Basin
3,494km²
Drop
240m
from 239 m to -1 m
Country
1
The journey
From source to mouth
161 km of river and 12 stops on the way: 8 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmSourceat 239 m
- 18 kmArbia1,582 people
- 18 kmTaverne D'Arbia2,416 people
- 24 kmIsola D'Arbia1,060 people
- 26 kmPonte A Tressa1,353 people
- 31 kmMonteroni d'Arbia4,881 people
- 47 kmBuonconvento2,688 people
- 66 kmMersetributary
- 66 kmCrevole Rivertributary
- 83 kmOrciatributary
- 129 kmIstia D'Ombrone-Le Stiacciole1,486 people
- 133 kmSteccaia
- 139 kmGrosseto60,922 people
- 161 kmTyrrhenian Seaat -1 m
Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.
River in Italy
At the mouth it carries 32 m³/s on average: an Olympic pool every 78 seconds. It drops from 239 m to -1 m, 1.5 m per kilometre on average. Its basin covers 3,494 km², about the size of CV. 211,000 people live in it. Highest water: from November to December; lowest: from June to August. No large dam holds it back: it is one of the world's free-flowing rivers.
Where to start
- GrossetoLargest city on its banks · 60,922 people
- Marina di Campo Airport (EBA)Nearest airport with scheduled flights, 71 km from the cityCar hire at FLR airport (Firenze)Discover Cars · Affiliate link↗
- From May to SeptemberThe best months to visit
Ombrone, month by month
Highest water: from November to December
Lowest water: from June to August. Best months to visit: from May to September.
From about 10 m³/s in the lowest month to 65 m³/s in the highest. An estimate: the monthly flow is modelled from the lowest and highest months of WaterGAP (RiverATLAS, 1971–2000) and the rain and snow along the river (WorldClim). Dams change the real rhythm. The chip is the average air temperature; below it, the month's rain.
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.
The basin
Ombrone: the basin in numbers
3,628 km² of land send their water to this river. This is what lives on it.
- 211,000people live in the basin
- 58/km²people per km²
- 310maverage altitude of the basin
- 705mmof rain a year (basin average)
- 13.6°Caverage air temperature
- 4%protected areas
What covers the basin
- 33% Forest
- 36% Cropland
- 41% Pasture
- 2% Towns and cities
RiverATLAS (HydroATLAS v1.0, CC BY 4.0): land cover, people, protected areas, glaciers and dams over the whole basin upstream of the mouth.
Along the river
Ombrone: what you find on the way
- 4Weirs
- 1LocksCanale Mandraccio
From OpenStreetMap, within 1.5 km of the river. Not mapped is not the same as not there.
Cross-checked with our atlases
Ombrone 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.
6beaches at the mouth and on the banksCoastya
2mountains at the sourcePeakyas
2islands off the mouthIslandyas
Beaches (6)
At the mouth (25 km) and on the banks, by Coastya
- Medusa3.6 km away24.9°C
- Oasi3.0 km away24.9°C
- Kite Beach Fiumara8.4 km away24.9°C
- Spiaggia di Marina di Grosseto6.4 km away24.9°C
- Spiaggia di Castiglione della Pescaia15 km away24.9°C
- Cala di Forno8.0 km away · cove24.9°C
Mountains at the source (2)
Within 15 km of the source, by Peakyas
- Monte Luco8.2 km away817m
- Poggio del Sarto14 km away
Islands off the mouth (2)
Within 30 km of the mouth, by Islandyas
- Argentarola Island28 km away0.0km²
- Sparviero Island28 km away
Islandyas is coming soonOpen Islandyas ↗
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.
Photos
Ombrone in pictures
Tributaries
Where it flows, and what flows into it
Tributaries (6)
Also: Arbia, Orcia, Merse, Lanzo River, Crevole River, Trasubbie
Where these numbers come from
| Name, length, places | Wikidata (Q736290) · CC0 |
|---|---|
| Course, profile, basin | RiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed from the source to the mouth 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, Islandyas — 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.



