The Casaluna rises to the west of the 1,712 metres (5,617 ft) Monte Muffraje in the commune of Carticasi.[2]
Its source is at an altitude of 1,559 metres (5,115 ft).
It flows with many meanders in a generally northwest direction to its confluence with the Golo to the south of Ponte Leccia.[2]
Its mouth is at an altitude of 207 metres (679 ft).
In its lower course it defines the eastern boundary of the Forêt de Pineto.[2]
Bridge
On 24 November 2016 an exceptionally violent storm hit central Corsica and caused widespread flooding.
An ice jam on the Casaluna river washed away a centuries-old bridge that spanned it.[3]
The bridge carried the D39 road over the lower Casaluna about 3 kilometres (1.9 mi) above its mouth.[4]
A temporary bridge was thrown over the river in mid-January 2017, but could not carry the heaviest vehicles.
In May 2020 work on a permanent replacement was scheduled to begin.
Although some of the local people wanted the old bridge to be rebuilt, that would be vulnerable to a similar storm, which was expected to become increasingly common as the climate changed.
Instead a modern bridge was to be built in place of the old one.[3]
On 23 July 2020 a public inquiry was launched prior to environmental authorization of the project.[5]
Hydrology
The river's flow has been measured at Gavignano since 2013.
The maximum instantaneous flow was 177 cubic metres per second (6,300 cu ft/s) on 16 March 2015.
The maximum daily flow was 81.9 cubic metres per second (2,890 cu ft/s) on 2 October 2015.[6]
Tributaries
The following streams (ruisseaux) are tributaries of the Casaluna, ordered by length, and sub-tributaries:[1]
"La Casaluna à Gavignano", eaufrance (in French), Ministère de l'Ecologie, du Développement Durable et de l'Energie, archived from the original on 2011-03-01, retrieved 2021-12-15
