12 reservoirs with a combined capacity of 1,174 hm³ · latest official reading: 6 October 2026
The Andalusian Mediterranean basin is currently at 63.9 % of capacity, far above normal for the time of year. The week-41 average across 38 years of records is 42.0 %, a difference of +21.9 points.
For context: a year ago it stood at 45.2 % and a month ago at 66.5 %. Against last week’s reading it is falling (−0.4 points).
Blue line: average monthly filling for the whole demarcation since 1988. The dot marks today’s reading, 63.9 % in October.
With 2,009 weeks of record since 1988, the average pattern of the Andalusian Mediterranean basin is clear: it peaks in April at 55.7 % and bottoms out in October at 41.8 %. That 14-point range makes it a moderately seasonal demarcation.
The highest reading in the whole series is 83.6 %, on 23 January 1990, and the lowest 10.2 %, on 14 November 1995. Comparing today against those two extremes says more than the bare percentage: 50 % is comfortable in a demarcation that rarely tops 60 %, and worrying in one that usually reaches summer full.
By capacity it is the 9th demarcation of the 14 covered by the hydrological bulletin: its 1,174 hm³ account for 2.1 % of everything Spain can store in mainland reservoirs. Today it holds 750 hm³.
The 12 dams the hydrological bulletin tracks in the Andalusian Mediterranean basin, sorted by capacity. Linked names have their own page with the full record.
| Reservoir | Capacity (hm³) | Volume (hm³) | Fill | Δ week | Use |
|---|---|---|---|---|---|
| Guadalhorce-Guadalteba | 279 | 250 | 89.6 % | −0.4 | Irrigation / supply |
| Viñuela, La | 165 | 139 | 84.2 % | +0.0 | Irrigation / supply |
| Cuevas de Almanzora | 161 | 15 | 9.3 % | +0.6 | Irrigation / supply |
| Rules | 111 | 91 | 82.0 % | −0.9 | Irrigation / supply |
| Guadarranque | 88 | 67 | 76.1 % | +0.0 | Irrigation / supply |
| Charco Redondo | 82 | 50 | 61.0 % | −1.2 | Irrigation / supply |
| Conde Guadalhorce | 66 | 41 | 62.1 % | −1.5 | Irrigation / supply |
| Benínar | 63 | 10 | 15.9 % | +0.0 | Irrigation / supply |
| Concepción | 62 | 30 | 48.4 % | −1.6 | Irrigation / supply |
| Béznar | 53 | 36 | 67.9 % | −1.9 | Irrigation / supply |
| Casasola | 22 | 7 | 31.8 % | +0.0 | Irrigation / supply |
| Limonero | 22 | 14 | 63.6 % | +0.0 | Irrigation / supply |
← Swipe the table to see every column →
The figures on this page come from the official MITECO reservoir archive, the same database behind Spain’s weekly hydrological bulletin. The bulletin covers every mainland reservoir above 5 hm³ of capacity and is published every Tuesday with Monday’s reading.
The latest reading here is from 6 October 2026, and the comparison series starts in 1988. Nothing is estimated, interpolated or forecast: the percentage is stored volume divided by the usable capacity the bulletin itself assigns to the dam. Historical averages are computed over the same calendar week in every previous year, the only fair comparison in a system with such marked seasonality.
National summary and reservoir search on Reservoirs of Spain.
