Cuencas Internas del País Vasco

As of September 1, 2026, the reservoirs we track across Cuencas Internas del País Vasco that report live levels hold roughly 16 hm³ of water — about 76.2% of their combined capacity. Taken together, Cuencas Internas del País Vasco's reservoirs are within their normal operating range.

None of the tracked reservoirs are currently at critically low levels. Urkulu is the fullest at 80.0%, while Ibai-Eder is the lowest at 72.7%.

Storage figures for Cuencas Internas del País Vasco come from MITECO; the most recent reading is from September 1, 2026. Each reservoir below links to its own page with full history and seasonal context.