Politics

Why is there so little water in the Siurana and Riudecanyes reservoirs?

The March rains have significantly increased the Catalan reservoirs' capacity, which now exceeds, on average, 62% of their capacity. The Baells reservoir in Berguedà has even had to release water because it already exceeded 95% of its total capacity, which is 109 hm3. However, looking at the reservoir data, the Siurana reservoir in Priorat is striking, with a modest 23.38% capacity, equivalent to 2.86 hm3, while the Riudecanyes reservoir, which is connected to the Siurana reservoir, is at 51% (2.74 hm3). Why haven't these two reservoirs absorbed as much water as the others?

The March rains have significantly increased the Catalan reservoirs' capacity, which now exceeds, on average, 62% of their capacity. The Baells reservoir in Berguedà has even had to release water because it already exceeded 95% of its total capacity, which is 109 hm3. However, looking at the reservoir data, the Siurana reservoir in Priorat is striking, with a modest 23.

38% capacity, equivalent to 2.86 hm3, while the Riudecanyes reservoir, which is connected to the Siurana reservoir, is at 51% (2.74 hm3).

Why haven't these two reservoirs absorbed as much water as the others?.