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[INTERNATIONAL] · Argentina, Chile, Spain, Mexico, Paraguay · 9 sources

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Part of situation: Global reservoir levels and water management (2 clusters)

Global water reservoirs report varying levels and flow trends

water reservoir levels hydrological monitoring drought recovery river flooding agricultural irrigation

Various regions are reporting significant shifts in water reservoir levels and river flows. In Chile, the Santa Juana Reservoir has reached 99.2% capacity following winter rains and snowmelt, marking a recovery from previous drought risks.

In Mexico, the La Boquilla dam has seen an increase in storage to 23.20% due to recent rainfall, while Querétaro faces agricultural challenges as its dams remain below 50% capacity. In Coahuila, authorities are using cloud seeding to boost levels in the Lázaro Cárdenas reservoir, which is currently at 28.41%.

In South America, the Yacyretá Binational Entity reports stable but slightly descending levels at its reservoir. Meanwhile, the Uruguay River is showing an upward trend near Concordia and Salto, with Salto Grande monitoring rising flows and open spillways. In Spain, the Duero basin shows mixed results, with some reservoirs in León maintaining levels above the 20-year average while others remain below historical references.

Entities

Comisión Nacional del Agua · Confederación Hidrográfica del Duero · Entidad Binacional Yacyretá · Government of Coahuila · La Boquilla Dam · Lázaro Cárdenas Dam · Salto Grande · Santa Juana Reservoir · Yacyretá

Claims

What the coverage asserts, and how many sources carry each claim.

  • [○ 1 SOURCE] The Government of Coahuila and local producers are using atmospheric cloud seeding to increase water levels in the Lázaro Cárdenas dam. vanguardia.com.mx
  • [○ 1 SOURCE] The forecasted daily inflow for the Yacyretá hydroelectric plant is 15,800 m3/s.
  • [○ 1 SOURCE] The La Boquilla dam reached 23.20% of its storage capacity on September 30, 2026. lanoticiaregional.com.mx
  • [○ 1 SOURCE] The Yacyretá reservoir level was 82.86 meters above sea level on September 30, 2026.
  • [○ 1 SOURCE] The Lázaro Cárdenas dam is operating at 28.41% of its maximum ordinary water level. vanguardia.com.mx
  • [○ 1 SOURCE] Inflow upstream of the La Boquilla dam is approximately 163 cubic meters per second. lanoticiaregional.com.mx

Sources

Cota: 82. 83 msnm. Resumen Ejecutivo N° 6099/02-10-2026 – Entidad Binacional Yacyretá [www.eby.gov.py]
Embalse Santa Juana alcanza nivel máximo tras años de riesgo de sequía [elnoticierodelhuasco.cl]
El río Uruguay tendrá una tendencia ascendente frente a Concordia, según el parte de Salto Grande [www.elheraldo.com.ar]
La Boquilla sube 26 centímetros y alcanza el 23. 20% de almacenamiento este 30 de septiembre [lanoticiaregional.com.mx]
Crecida del río impacta obra del colector Nadadores - Norte de Ciudad Juárez [nortedigital.mx]
El río Uruguay se acerca a los 9 metros y se prevé tendencia creciente con mayores lluvias [www.redesdenoticias.com.ar]
La campaña de riego se prolonga en León hasta el próximo 15 de octubre [www.diariodeleon.es]
Presas de Querétaro, por debajo de 50%: el campo no tendrá agua suficiente [rotativo.com.mx]
Gobierno y productores laguneros impulsan lluvias para rescatar a la presa Lázaro Cárdenas, en Durango [vanguardia.com.mx]