Abstracts

Karst landscapes, from Normandy and the Grands Causses to Guilin, Yucatán, Florida, Madagascar, and the Nullarbor, are major freshwater reservoirs that are hard to predict, vulnerable to turbidity, and essential to drinking-water management

Dry valleys can kill: parched soils turn rain into sudden, destructive flash floods. Pakistan, the Sahel/Horn countries, and several Gulf and Middle Eastern states top the list of places where dry-valley floods have repeatedly caused the most human harm.

Yemen has no permanent rivers, yet its dry valleys, wadis, turn into deadly flash floods during intense rainy seasons, destroying homes, killing dozens, and displacing tens of thousands. This post explains how Yemen’s unique hydrology works, why floods are so destructive in a war‑stricken, climate‑vulnerable country, and what it means for water security and flood risk management.

Denmark’s hydrological challenge is a delicate balancing act: protecting groundwater-dependent drinking water, managing drought and flooding, and adapting to rising coastal and groundwater risks.

The Atlantic Multidecadal Oscillation is a slow-moving climate pattern with outsized influence on river systems. By shaping atmospheric circulation, precipitation, and groundwater recharge over decades, AMO can alter river flow regimes, drought persistence, and flood risk across continental basins.

Hydropower is entering a more demanding phase. For executives, the central issue is no longer whether hydropower can deliver energy but whether hydropower assets can be managed as basin infrastructure that strengthens grid resilience, water security, and downstream system performance.

Iraq just lived through its driest year since 1933. It also buried people killed by flash floods in the space of a single week. These look like opposite problems. They are the same problem wearing two faces, and it is one Iraq can solve without waiting for a drop of rain.

Water security is no longer just about supply. In the Mediterranean and beyond, the real challenge is the water trilemma: too little water, too much water, and too much pollution. The answer lies in combining governance, finance, technology, and local participation into one connected system.

Water scarcity threatens 45 percent of global GDP by 2050. Forty-one utilities across 24 countries reveal their top struggles: non-revenue water, service reliability, and climate vulnerability. This article exposes the urgent water crisis and why operational decision support-not just data-is the gap utilities desperately need filled.

Panama’s water story is one of growing tension: repeated droughts are straining hydropower, urban supply, agriculture, and canal operations, while basin-level adaptation efforts are trying to keep the system resilient.