Hồ Dầu Tiếng xả tràn không gây ngập | Cụm tin | VTV24

Key Concepts:

• Bão số 15 (Typhoon No. 15): The primary subject of the report, a developing typhoon posing a significant threat.
• Công điện số 231: An official directive from the Prime Minister regarding typhoon preparedness.
• Chủ động phòng chánh, ứng phó (Proactive prevention and response): The core strategy emphasized for dealing with the typhoon.
• An toàn tính mạng nhân dân lên trên hết (People's lives are paramount): The overarching priority.
• Hồ đập (Dams and reservoirs): Infrastructure requiring specific safety measures.
• Sơ tán, di rời khẩn cấp (Emergency evacuation): A critical measure for vulnerable populations.
• Nghị quyết số 380: A government resolution concerning post-flood recovery.
• Cường độ bão (Typhoon intensity): Measured in categories (cấp) and gusts (giật).
• Vùng nguy hiểm trên biển (Dangerous sea areas): Defined by latitude and longitude, posing risks to vessels.
• Dông lốc, gió mạnh, sóng lớn (Thunderstorms, strong winds, large waves): Hazards associated with the typhoon at sea.
• Ngành đường sắt (Railway sector): Implementing measures to ensure safety and restore operations.
• Ngành hàng không (Aviation sector): Activating flight safety protocols.
• Triều cường (King tide): High tide that can exacerbate flooding.
• Xả nước hồ Dầu Tiếng (Dầu Tiếng Lake water discharge): A controlled release of water from a reservoir.
• Ngập trên diện rộng (Widespread flooding): A potential consequence of combined factors.
• Hạ du sông Sài Gòn (Downstream of the Saigon River): The area potentially affected by water discharge.
• Dung tích phòng lũ (Flood control capacity): The reserve capacity of a reservoir to hold floodwaters.

Summary:

1. Government Directive and Preparedness Measures

Prime Minister Phạm Minh Chính has issued Công điện số 231 on the proactive prevention and response to Bão số 15. The directive mandates that ministries, sectors, and coastal localities from Đà Nẵng to Lâm Đồng closely monitor the typhoon's developments and implement timely and effective response measures. The guiding principle is "chủ động phòng ngừa từ sớm, từ xa, ứng phó ở mức cao nhất" (proactive prevention from early on, from afar, and response at the highest level), with the ultimate goal of "đảm bảo an toàn tính mạng nhân dân lên trên hết" (ensuring people's lives are paramount).

Key actions required include:

• Urgent guidance for vessels at sea to seek safe shelter.
• Review and finalization of local response plans and scenarios.
• Implementation of safety measures for dams, reservoirs, dykes, headquarters, schools, infrastructure, and production/business activities, particularly in agriculture and aquaculture.
• Timely emergency evacuation of residents from dangerous areas.

Furthermore, the Prime Minister has instructed provinces and cities to focus on rapidly overcoming the consequences of recent floods and storms, as per Nghị quyết số 380 of the Government.

2. Typhoon No. 15: Current Status and Forecast

As of the report, Bão số 15 has intensified by two categories, reaching category 12 with gusts of category 15 at 4:00 AM. The typhoon is projected to maintain this intensity for the next 24 hours before gradually shifting its direction westward, then northwestward, and subsequently weakening.

By 4:00 AM on November 30th, the typhoon is expected to be at category 10 with gusts of category 13, located in the western waters of the central East Sea. Its slow movement, at only 5 to 10 km/h, will prolong adverse weather conditions at sea.

The dangerous sea areas within the next 24 hours are defined by the latitudinal range of 11 to 15 degrees North and the longitudinal range of 111.5 to 116 degrees East. Vessels operating in these areas are at risk of encountering thunderstorms, strong winds, and large waves.

3. Sector-Specific Response Plans

Railway Sector:

• The North-South railway line has been reopened after recent floods.
• However, trains will continue to have restricted speeds when passing through vulnerable sections.
• Infrastructure is being continuously inspected and reinforced.
• Normal operating speeds are expected to be restored by November 28th (tomorrow).

Aviation Sector:

• Flight safety plans have been activated.
• Infrastructure and backup power systems are being inspected and reinforced.
• Continuous air traffic control capabilities are being ensured.
• Air traffic control facilities, airports, and airlines are required to coordinate closely, monitor weather forecasts, and be prepared to reroute, space out, or divert flights to minimize risks.

4. Dầu Tiếng Lake Water Discharge and Flood Risk in Ho Chi Minh City

Concerns have been raised about potential widespread flooding in Ho Chi Minh City due to the combination of Bão số 15, king tides, and water discharge from Dầu Tiếng Lake. However, the Ho Chi Minh City Department of Agriculture and Rural Development and the lake management unit have confirmed that the current spillway discharge will not cause flooding downstream of the Saigon River.

The operating unit explained that to prepare for the typhoon, the lake is currently discharging water at a rate of 36 to 200 m³/s from November 25th to December 1st. Even at the highest discharge rate, the downstream water level remains safe because there is no rain and the king tide has already peaked.

By December 1st, the lake's water level is projected to decrease to approximately 23.68 meters, increasing the flood control capacity by 230 million m³. Current inflow to the lake is estimated at around 120 m³/s.

The spokesperson stated, "With the current discharge of 200 m³/s, combined with the water usage, the lake's water level is currently decreasing. This discharge rate is very appropriate because, firstly, the king tide in Ho Chi Minh City is currently past its peak and receding. Secondly, it is not raining here. Therefore, we are discharging 200 m³/s to lower the lake's water level and create a ready capacity to receive floodwaters when it rains due to the impact of Typhoon No. 15."

5. Synthesis and Conclusion

The Vietnamese government, under the leadership of Prime Minister Phạm Minh Chính, is taking a proactive and comprehensive approach to mitigate the impact of Bão số 15. This involves stringent directives for all relevant sectors and localities, prioritizing the safety of citizens. The typhoon's intensity and slow movement pose a significant threat, necessitating careful monitoring and preparedness. Key sectors like railways and aviation are implementing robust safety protocols. In Ho Chi Minh City, authorities have clarified that controlled water discharge from Dầu Tiếng Lake, coupled with favorable tidal and weather conditions, will not lead to widespread flooding, and the discharge is strategically aimed at increasing flood control capacity for potential rainfall associated with the typhoon. The overarching message is one of vigilance, preparedness, and a commitment to safeguarding lives and infrastructure.