System Status

Nero

Spain — dam levels — latest data & analysis

70.5%

of total capacity

Stored

17588.0 MCM

Total Capacity

24949.0 MCM

Last Updated

2026-08-07

System Capacity

All 20 Dams

Critical <20% Warning 20–40% Healthy >40%

La Serena

86.8%

Stored: 2795.00 MCM

Capacity: 3219.0 MCM

Alcantara

Alcántara

74.9%

Stored: 2367.00 MCM

Capacity: 3160.0 MCM

Almendra

76.9%

Stored: 2037.00 MCM

Capacity: 2649.0 MCM

Buendia

Buendía

51.6%

Stored: 880.00 MCM

Capacity: 1705.0 MCM

Cijara

Cíjara

81.8%

Stored: 1231.00 MCM

Capacity: 1505.0 MCM

Valdecanas

Valdecañas

49.8%

Stored: 720.00 MCM

Capacity: 1446.0 MCM

Mequinenza

73.4%

Stored: 1008.00 MCM

Capacity: 1373.0 MCM

Ricobayo

58.4%

Stored: 669.00 MCM

Capacity: 1145.0 MCM

Iznajar

Iznájar

80.9%

Stored: 744.00 MCM

Capacity: 920.0 MCM

Gabriel y Galan

Gabriel y Galán

52.9%

Stored: 482.00 MCM

Capacity: 911.0 MCM

Alange

52.3%

Stored: 446.00 MCM

Capacity: 852.0 MCM

La Brena II

La Breña II

80.0%

Stored: 658.00 MCM

Capacity: 823.0 MCM

Entrepenas

Entrepeñas

65.8%

Stored: 535.00 MCM

Capacity: 813.0 MCM

Orellana

72.7%

Stored: 587.00 MCM

Capacity: 808.0 MCM

Canelles

66.4%

Stored: 451.00 MCM

Capacity: 679.0 MCM

Riano

Riaño

58.5%

Stored: 375.00 MCM

Capacity: 641.0 MCM

Andevalo

Andévalo

87.5%

Stored: 555.00 MCM

Capacity: 634.0 MCM

Negratin

Negratín

62.2%

Stored: 355.00 MCM

Capacity: 571.0 MCM

Garcia de Sola

García de Sola

53.4%

Stored: 296.00 MCM

Capacity: 554.0 MCM

Embalse del Ebro

73.4%

Stored: 397.00 MCM

Capacity: 541.0 MCM

How to Read This Dashboard

This dashboard tracks reservoir fill levels across Spain. Each card shows a dam's current water storage as a percentage of its total capacity. The system checks for new data every six hours — some upstream sources update daily, others weekly or monthly.

What the Numbers Mean

Percentage represents how full a reservoir is relative to its maximum design capacity. MCM (Million Cubic Metres) is the standard unit for measuring reservoir volumes. Below 20% capacity, evaporation losses accelerate, water quality degrades as sediment concentrates, and extraction becomes physically harder as water levels drop below outlet pipes.

Severity Indicators

Dams are colour-coded by fill level: red (critical) means below 20% of capacity, amber (warning) indicates 20–40%, and green (healthy) means above 40%. Click any dam card to explore its full history and year-on-year comparisons.

Latest Analysis Interactive Map