The Tirso river has a length of 159 km (99 mi), and a drainage basin with an area of approximately 3,376 km² (1,303 sq mi).

Its discharge (volume of water which passes through a section of the river per unit of time) depends of the season; its average discharge is 16.6 m³/s (590 cu ft/s) but is very low during summer.
The Tirso river has a length of 159 km (99 mi), and a drainage basin with an area of approximately 3,376 km² (1,303 sq mi).
Its discharge (volume of water which passes through a section of the river per unit of time) depends of the season; its average discharge is 16.6 m³/s (590 cu ft/s) but is very low during summer.
Tirso (river)