The latest rains fill the Ulldecona reservoir and force the disbursement of water

The Isolated High Level Depression (DANA) last weekend has left significant rainfall records in the Puerto mountain range and has filled the Ulldecona reservoir, which has begun to release water.

The automatic weather station of the Els Ports Natural Park, located in the municipality of Roquetes at an altitude of 1,055 meters (near the Carrasqueta pass, to the west of Caro), has registered 272 mm of precipitation, which is more in two days than in the last six months, when 254.3 were accumulated.

So far in 2022 it has accumulated 1,404 mm, which is the maximum rainfall in all of Catalonia, even ahead of the mountainous areas of the Pyrenees. And it is that spring was also quite rainy in the area, with more than 830 mm accumulated during the past months of March and April.

However, it is still far from the 1,923 mm recorded in 2020, the maximum so far in the data series of this weather station inaugurated in 2007. On the other hand, the driest year was 2017, with a total of only 568 mm, of which 334 fell during the first quarter, with which from April to December only 234 mm were collected. Because, despite being one of the rainiest places in the country, it does not escape long arid periods. The annual average would be located at more than 1,100 mm. It is a value higher than that of Vielha, the capital of Aran, similar to that of the rainy sectors of Ripollès and only surpassed in Catalonia by places in the high Pyrenean mountains, as explained by the Meteorological Service of Catalonia (Meteocat).

On the Valencian side of the Puerto massif, between 150 and 260 mm of rain were recorded in the area of ​​the Ulldecona reservoir. According to data from the Júcar Hydrographic Confederation, in the Fredes area more than 250 liters per square meter were exceeded, while in La Sénia they reached 156.

Thus, the contributions of water to the swamp have filled it up again and water has begun to be disbursed through the gates, at a rate of 7 cubic meters per second. And it is that the swamp went from 7 to 9.25 cubic hectometres of dammed water in a few hours, compared to the 10.94 that it has in total capacity.

The Sénia river goes down again, after months dry; while the Ulldecona Irrigation Community and the rest of the water users of the reservoir see more than guaranteed reserves for the coming months.

The good precipitation figures in Terres de l'Ebre and especially around the Port mountain range contrast with the drought suffered by most of the country and also with the emergency situation in the final stretch of the Ebro river, as a result of the low reserves of the Mequinenza reservoir.

These days the Catalan section of the Ebro registers a slight increase in flows, from 80 (ecological minimum) to just over 90 cubic meters per second (according to data from the gauging station of the 'Ebro Hydrographic Confederation in Tortosa ), mainly due to the contribution of tributaries and ravines from the Port. But in general the situation continues to be an emergency due to drought, since Mequinenza is only at 21.57 percent of its capacity. However, these are slightly higher figures than the previous week and break a long negative trend.

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