Bagre Dam Spillage: NADMO Warns Ghana Communities as Risk Looms

Residents and farmers living along the White Volta and other flood-prone areas in Ghana have been urged to remain vigilant as authorities prepare for the possible controlled spillage of Burkina Faso’s Bagre Dam.

The Water Resources Commission (WRC) has warned that the dam’s operator, SONABEL, could begin releasing water from Tuesday, August 11, 2026, if the reservoir reaches its designated trigger level.

However, authorities have stressed that the spillage is conditional. It is not accurate to say that the dam has already begun spilling simply because August 11 has arrived.

According to the WRC, controlled spillage will commence if the reservoir reaches 234.00 metres.

Why Ghana is on alert

The Bagre Dam is located upstream in Burkina Faso, while water from the system eventually flows into Ghana through the White Volta.

Any significant increase in downstream water flows could therefore affect communities, farms and other activities located close to the river and its tributaries.

The WRC issued a public advisory on August 6 targeting communities and authorities in the Upper East, North East, Northern and Savannah regions, all of which fall within the White Volta Basin.

The Commission called on relevant Metropolitan, Municipal and District Assemblies, traditional authorities, disaster management agencies and residents to take precautionary measures ahead of the potential release.

What the Water Resources Commission says

In its earlier advisory, the WRC said information received from SONABEL showed that the reservoir level stood at approximately 232.92 metres on August 4, with the dam about 62.77 per cent full.

The trigger for controlled spillage was identified as 234.00 metres.

This means the situation remains dependent on the level of water entering the reservoir.

For residents downstream, however, the warning is significant because rising water levels can quickly create dangerous conditions in low-lying communities.

NADMO issues fresh warning

The National Disaster Management Organisation (NADMO) has subsequently intensified public warnings.

In the Biakoye District, NADMO on Monday, August 10, urged residents around the Volta Lake and other low-lying areas to remain vigilant over the expected Bagre Dam spillage.

The district authorities advised fishermen and canoe operators to exercise particular caution and urged parents to prevent children from going near rising water.

Residents were also advised not to swim or attempt to cross flooded waterways.

NADMO further urged residents to secure canoes, fishing equipment, livestock and other valuables and to be prepared to move to higher ground if water levels rise.

Farmers and riverbank communities face the biggest risk

For farmers cultivating close to the White Volta and its tributaries, the warning carries particular significance.

Flooding can destroy crops, wash away farm equipment and livestock, and disrupt transportation in affected communities.

Residents who operate businesses or keep property close to waterways are therefore being encouraged to take precautionary action before water levels become dangerous.

The authorities' message is not that every community will necessarily be flooded. Rather, residents in vulnerable areas are being asked to prepare for the possibility of rising water levels.

What residents should do

Residents in flood-prone areas are encouraged to:

• Move valuable property and livestock away from areas vulnerable to flooding.
• Avoid swimming or entering rapidly rising waterways.
• Do not attempt to cross flooded roads, streams or rivers.
• Keep children away from riverbanks and other dangerous water bodies.
• Secure canoes, fishing equipment and farming tools.
• Monitor announcements from NADMO, local assemblies and other authorised agencies.
• Be prepared to relocate to higher ground if authorities issue an evacuation warning.

The key point for Ghanaians

The most important point at this stage is that August 11 is the possible start date for the controlled spillage, not confirmation that the release has already started.

The WRC's warning is tied to the reservoir reaching the 234.00-metre trigger level.

Residents along the White Volta and other vulnerable areas should therefore remain alert and follow official instructions as authorities continue monitoring the situation.

Global Pulse GH will continue to monitor updates from the Water Resources Commission, NADMO and other relevant authorities as the situation develops.