Hydrology Srilanka

06/11/2025

𝐀𝐝𝐯𝐢𝐬𝐨𝐫𝐲 𝐟𝐨𝐫 𝐒𝐞𝐯𝐞𝐫𝐞 𝐋𝐢𝐠𝐡𝐭𝐧𝐢𝐧𝐠

𝐂𝐨𝐥𝐨𝐫 : 𝐀𝐦𝐛𝐞𝐫

𝐅𝐨𝐫 𝐍𝐨𝐫𝐭𝐡𝐞𝐫𝐧, 𝐍𝐨𝐫𝐭𝐡-𝐜𝐞𝐧𝐭𝐫𝐚𝐥, 𝐄𝐚𝐬𝐭𝐞𝐫𝐧 𝐚𝐧𝐝 𝐔𝐯𝐚 𝐩𝐫𝐨𝐯𝐢𝐧𝐜𝐞𝐬.

𝐏𝐋𝐄𝐀𝐒𝐄 𝐁𝐄 𝐀𝐖𝐀𝐑𝐄!

𝐓𝐡𝐮𝐧𝐝𝐞𝐫𝐬𝐡𝐨𝐰𝐞𝐫𝐬 𝐚𝐜𝐜𝐨𝐦𝐩𝐚𝐧𝐢𝐞𝐝 𝐛𝐲 𝐬𝐞𝐯𝐞𝐫𝐞 𝐥𝐢𝐠𝐡𝐭𝐧𝐢𝐧𝐠 𝐚𝐫𝐞 𝐥𝐢𝐤𝐞𝐥𝐲 𝐭𝐨 𝐨𝐜𝐜𝐮𝐫 𝐚𝐭 𝐬𝐞𝐯𝐞𝐫𝐚𝐥 𝐩𝐥𝐚𝐜𝐞𝐬 𝐢𝐧 𝐍𝐨𝐫𝐭𝐡𝐞𝐫𝐧, 𝐍𝐨𝐫𝐭𝐡-𝐜𝐞𝐧𝐭𝐫𝐚𝐥, 𝐄𝐚𝐬𝐭𝐞𝐫𝐧 𝐚𝐧𝐝 𝐔𝐯𝐚 𝐩𝐫𝐨𝐯𝐢𝐧𝐜𝐞𝐬.

𝐓𝐡𝐞𝐫𝐞 𝐦𝐚𝐲 𝐛𝐞 𝐭𝐞𝐦𝐩𝐨𝐫𝐚𝐫𝐲 𝐥𝐨𝐜𝐚𝐥𝐢𝐳𝐞𝐝 𝐬𝐭𝐫𝐨𝐧𝐠 𝐰𝐢𝐧𝐝𝐬 𝐝𝐮𝐫𝐢𝐧𝐠 𝐭𝐡𝐮𝐧𝐝𝐞𝐫𝐬𝐡𝐨𝐰𝐞𝐫𝐬. 𝐆𝐞𝐧𝐞𝐫𝐚𝐥 𝐩𝐮𝐛𝐥𝐢𝐜 𝐢𝐬 𝐤𝐢𝐧𝐝𝐥𝐲 𝐫𝐞𝐪𝐮𝐞𝐬𝐭𝐞𝐝 𝐭𝐨 𝐭𝐚𝐤𝐞 𝐚𝐝𝐞𝐪𝐮𝐚𝐭𝐞 𝐩𝐫𝐞𝐜𝐚𝐮𝐭𝐢𝐨𝐧𝐬 𝐭𝐨 𝐦𝐢𝐧𝐢𝐦𝐢𝐳𝐞 𝐝𝐚𝐦𝐚𝐠𝐞𝐬 𝐜𝐚𝐮𝐬𝐞𝐝 𝐛𝐲 𝐥𝐢𝐠𝐡𝐭𝐧𝐢𝐧𝐠 𝐚𝐜𝐭𝐢𝐯𝐢𝐭𝐲.

𝐀𝐂𝐓𝐈𝐎𝐍 𝐑𝐄𝐐𝐔𝐈𝐑𝐄𝐃:

𝐓𝐡𝐞 𝐃𝐞𝐩𝐚𝐫𝐭𝐦𝐞𝐧𝐭 𝐨𝐟 𝐌𝐞𝐭𝐞𝐨𝐫𝐨𝐥𝐨𝐠𝐲 𝐚𝐝𝐯𝐢𝐬𝐞𝐬 𝐭𝐡𝐚𝐭 𝐩𝐞𝐨𝐩𝐥𝐞 𝐬𝐡𝐨𝐮𝐥𝐝:

• 𝐒𝐞𝐞𝐤 𝐬𝐡𝐞𝐥𝐭𝐞𝐫, 𝐩𝐫𝐞𝐟𝐞𝐫𝐚𝐛𝐥𝐲 𝐢𝐧𝐝𝐨𝐨𝐫𝐬 𝐚𝐧𝐝 𝐧𝐞𝐯𝐞𝐫 𝐮𝐧𝐝𝐞𝐫 𝐭𝐫𝐞𝐞𝐬.

• 𝐀𝐯𝐨𝐢𝐝 𝐨𝐩𝐞𝐧 𝐚𝐫𝐞𝐚𝐬 𝐬𝐮𝐜𝐡 𝐚𝐬 𝐩𝐚𝐝𝐝𝐲 𝐟𝐢𝐞𝐥𝐝𝐬, 𝐭𝐞𝐚 𝐩𝐥𝐚𝐧𝐭𝐚𝐭𝐢𝐨𝐧𝐬 𝐚𝐧𝐝 𝐨𝐩𝐞𝐧 𝐰𝐚𝐭𝐞𝐫 𝐛𝐨𝐝𝐢𝐞𝐬 𝐝𝐮𝐫𝐢𝐧𝐠 𝐭𝐡𝐮𝐧𝐝𝐞𝐫𝐬𝐭𝐨𝐫𝐦𝐬.

• 𝐀𝐯𝐨𝐢𝐝 𝐮𝐬𝐢𝐧𝐠 𝐰𝐢𝐫𝐞𝐝 𝐭𝐞𝐥𝐞𝐩𝐡𝐨𝐧𝐞𝐬 𝐚𝐧𝐝 𝐜𝐨𝐧𝐧𝐞𝐜𝐭𝐞𝐝 𝐞𝐥𝐞𝐜𝐭𝐫𝐢𝐜 𝐚𝐩𝐩𝐥𝐢𝐚𝐧𝐜𝐞𝐬 𝐝𝐮𝐫𝐢𝐧𝐠 𝐭𝐡𝐮𝐧𝐝𝐞𝐫𝐬𝐭𝐨𝐫𝐦𝐬.

• 𝐀𝐯𝐨𝐢𝐝 𝐮𝐬𝐢𝐧𝐠 𝐨𝐩𝐞𝐧 𝐯𝐞𝐡𝐢𝐜𝐥𝐞𝐬, 𝐬𝐮𝐜𝐡 𝐚𝐬 𝐛𝐢𝐜𝐲𝐜𝐥𝐞𝐬, 𝐭𝐫𝐚𝐜𝐭𝐨𝐫𝐬 𝐚𝐧𝐝 𝐛𝐨𝐚𝐭𝐬 𝐞𝐭𝐜.

• 𝐁𝐞𝐰𝐚𝐫𝐞 𝐨𝐟 𝐟𝐚𝐥𝐥𝐞𝐧 𝐭𝐫𝐞𝐞𝐬 𝐚𝐧𝐝 𝐩𝐨𝐰𝐞𝐫 𝐥𝐢𝐧𝐞𝐬.

• 𝐅𝐨𝐫 𝐞𝐦𝐞𝐫𝐠𝐞𝐧𝐜𝐲 𝐚𝐬𝐬𝐢𝐬𝐭𝐚𝐧𝐜𝐞 𝐜𝐨𝐧𝐭𝐚𝐜𝐭 𝐭𝐡𝐞 𝐥𝐨𝐜𝐚𝐥 𝐝𝐢𝐬𝐚𝐬𝐭𝐞𝐫 𝐦𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 𝐚𝐮𝐭𝐡𝐨𝐫𝐢𝐭𝐢𝐞𝐬.

Issued by Natural Hazards Early Warning Center in the Department of Meteorology - Sri Lanka at 3.30 pm on 6th of November 2025, valid up to 11.00 pm on 6th of November 2025

01/06/2025

𝐈𝐬𝐥𝐚𝐧𝐝𝐰𝐢𝐝𝐞 𝐖𝐚𝐭𝐞𝐫 𝐋𝐞𝐯𝐞𝐥 & 𝐑𝐚𝐢𝐧𝐟𝐚𝐥𝐥 𝐒𝐢𝐭𝐮𝐚𝐭𝐢𝐨𝐧 𝐢𝐧 𝐌𝐚𝐣𝐨𝐫 𝐑𝐢𝐯𝐞𝐫𝐬 𝐚𝐬 𝐚𝐭 𝟗.𝟎𝟎 𝐚𝐦 𝐨𝐧 𝟏𝐬𝐭 𝐨𝐟 𝐉𝐮𝐧𝐞 𝟐𝟎𝟐𝟓.

Issued By the Hydrology & Disaster Management Division in the Irrigation Department

03/05/2025

2025-05-02 දිනයේ උපරිම වර්ෂාපතනය මි.මී. 86.1 ක් බට අත (හම්බන්තොට) ප්‍රදේශයෙන් වාර්තා වී ඇත.
02-05-2025 அன்று அதிகபட்ச பட்டா அத்த (கம்பாந்தோட்டை) பிரதேசத்தில் 86.1 மி.மீ. ஆகும்.
The highest rainfall on 02-05-2025 was 86.1 mm reported from Bata Atha (Hambanthota).
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සටහන: 2025-05-02 දින උදෑසන 8.30 සිට 2025-05-03 දින උදෑසන 8.30 දක්වා පැය 24 ක කාලය තුල කා.වි.දෙ. වර්ෂාපතන මධ්‍යස්ථානවලින් වාර්තා වූ වර්ෂාපතනයන්ගේ අන්තර්නිවේශනය කරන ලද (interpolated) අගයන් සිතියමේ දැක්වේ.
குறிப்பு: 02-05-2025 அன்று காலை 8.30 மணி முதல் 03-05-2025 அன்று காலை 8.30 மணி வரையிலான 24 மணி நேர காலப்பகுதியில் வளிமண்டலவியல் திணைக்களத்தின் மழைவீழ்ச்சி நிலையங்களிலிருந்து பதிவான இடை மதிப்பீட்டு (interpolated) மழைவீழ்ச்சிப் பெறுமதிகளை வரைபடம் காட்டுகிறது.
Note: The map shows the interpolated rainfall values reported from the Department of Meteorology's rainfall stations over the 24-hour period, from 8.30 am on 02-05-2025 to 8.30 am on 03-05-2025.

16/01/2025

Flood Warning Message #02 For 🟠📢📢📢 Oya

Date: 2025/01/16 Time: 01.00pm🌧️🌧️

(Director Of Irrigation - Hydrology & Disaster Management )

16/01/2025

𝐈𝐬𝐥𝐚𝐧𝐝𝐰𝐢𝐝𝐞 𝐖𝐚𝐭𝐞𝐫 𝐋𝐞𝐯𝐞𝐥 & 𝐑𝐚𝐢𝐧𝐟𝐚𝐥𝐥 𝐒𝐢𝐭𝐮𝐚𝐭𝐢𝐨𝐧 𝐢𝐧 𝐌𝐚𝐣𝐨𝐫 𝐑𝐢𝐯𝐞𝐫𝐬 𝐚𝐬 𝐚𝐭 𝟔.𝟎𝟎 a𝐦 𝐨𝐧 𝟏6𝐭𝐡 𝐨𝐟 January 2025.

Issued By the Hydrology & Disaster Management Division in the Irrigation Department

15/01/2025

Flood Warning Message #01 For 🟡📢📢📢 Oya

Date: 2025/01/15 Time: 01.00pm🌧️🌧️

(Director Of Irrigation - Hydrology & Disaster Management )

24/11/2024

𝐏𝐫𝐢𝐨𝐫 𝐅𝐥𝐨𝐨𝐝 𝐖𝐚𝐫𝐧𝐢𝐧𝐠 : 𝐁𝐮𝐥𝐥𝐞𝐭𝐢𝐧 𝐍𝐨. 𝟎𝟏

𝐂𝐨𝐥𝐨𝐮𝐫 – 𝐀𝐦𝐛𝐞𝐫

𝐂𝐨𝐧𝐬𝐢𝐝𝐞𝐫𝐢𝐧𝐠 𝐭𝐡𝐞 𝐜𝐮𝐫𝐫𝐞𝐧𝐭 𝐥𝐨𝐰-𝐩𝐫𝐞𝐬𝐬𝐮𝐫𝐞 𝐬𝐢𝐭𝐮𝐚𝐭𝐢𝐨𝐧 𝐢𝐧 𝐭𝐡𝐞 𝐁𝐚𝐲 𝐨𝐟 𝐁𝐞𝐧𝐠𝐚𝐥 𝐚𝐧𝐝 𝐢𝐭𝐬 𝐩𝐨𝐬𝐬𝐢𝐛𝐥𝐞 𝐟𝐮𝐫𝐭𝐡𝐞𝐫 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭𝐬 𝐰𝐢𝐭𝐡𝐢𝐧 𝐧𝐞𝐱𝐭 𝐟𝐞𝐰 𝐝𝐚𝐲𝐬, 𝐭𝐡𝐞𝐫𝐞 𝐢𝐬 𝐚 𝐩𝐨𝐬𝐬𝐢𝐛𝐢𝐥𝐢𝐭𝐲 𝐨𝐟 𝐨𝐜𝐜𝐮𝐫𝐫𝐢𝐧𝐠 𝐟𝐥𝐨𝐨𝐝 𝐬𝐢𝐭𝐮𝐚𝐭𝐢𝐨𝐧𝐬 𝐢𝐧 𝐬𝐨𝐦𝐞 𝐨𝐟 𝐥𝐨𝐰𝐥𝐢𝐧𝐞 𝐟𝐥𝐨𝐨𝐝 𝐩𝐫𝐨𝐧𝐞 𝐚𝐫𝐞𝐚𝐬 𝐢𝐧 𝐟𝐨𝐥𝐥𝐨𝐰𝐢𝐧𝐠 𝐫𝐢𝐯𝐞𝐫 𝐛𝐚𝐬𝐢𝐧𝐬.

𝐓𝐡𝐞𝐫𝐞𝐟𝐨𝐫𝐞, 𝐫𝐞𝐬𝐢𝐝𝐞𝐧𝐭𝐬 𝐚𝐧𝐝 𝐭𝐫𝐚𝐯𝐞𝐥𝐞𝐫𝐬 𝐢𝐧 𝐭𝐡𝐨𝐬𝐞 𝐚𝐫𝐞𝐚𝐬 𝐚𝐫𝐞 𝐤𝐢𝐧𝐝𝐥𝐲 𝐫𝐞𝐪𝐮𝐞𝐬𝐭𝐞𝐝 𝐭𝐨 𝐛𝐞 𝐯𝐢𝐠𝐢𝐥𝐚𝐧𝐭 𝐢𝐧 𝐭𝐡𝐢𝐬 𝐫𝐞𝐠𝐚𝐫𝐝𝐬, 𝐟𝐫𝐨𝐦 𝟐𝟓𝐭𝐡 𝐍𝐨𝐯𝐞𝐦𝐛𝐞𝐫 𝟐𝟎𝟐𝟒 𝐭𝐨 𝟐𝟖𝐭𝐡 𝐍𝐨𝐯𝐞𝐦𝐛𝐞𝐫 𝟐𝟎𝟐𝟒.

𝐃𝐢𝐬𝐚𝐬𝐭𝐞𝐫 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 𝐀𝐮𝐭𝐡𝐨𝐫𝐢𝐭𝐢𝐞𝐬 𝐚𝐫𝐞 𝐫𝐞𝐪𝐮𝐞𝐬𝐭𝐞𝐝 𝐭𝐨 𝐭𝐚𝐤𝐞 𝐚𝐝𝐞𝐪𝐮𝐚𝐭𝐞 𝐩𝐫𝐞𝐜𝐚𝐮𝐭𝐢𝐨𝐧𝐬 𝐢𝐧 𝐭𝐡𝐢𝐬 𝐫𝐞𝐠𝐚𝐫𝐝𝐬.

𝟏.𝐌𝐚𝐥𝐰𝐚𝐭𝐡𝐮 𝐁𝐚𝐬𝐢𝐧
𝟐. 𝐊𝐚𝐥𝐚 𝐎𝐲𝐚 𝐁𝐚𝐬𝐢𝐧
𝟑. 𝐊𝐚𝐧𝐚𝐠𝐚𝐫𝐚𝐲𝐚𝐧𝐚𝐫𝐮 𝐁𝐚𝐬𝐢𝐧
𝟒. 𝐏𝐚𝐫𝐚𝐧𝐠𝐢 𝐀𝐫𝐮 𝐁𝐚𝐬𝐢𝐧
𝟓. 𝐌𝐚𝐚 𝐎𝐲𝐚 𝐁𝐚𝐬𝐢𝐧
𝟔. 𝐘𝐚𝐧 𝐎𝐲𝐚 𝐁𝐚𝐬𝐢𝐧
𝟕. 𝐌𝐚𝐡𝐚𝐰𝐞𝐥𝐢 𝐆𝐚𝐧𝐠𝐚 𝐁𝐚𝐬𝐢𝐧
𝟖. 𝐌𝐚𝐝𝐮𝐫𝐮 𝐎𝐲𝐚 𝐁𝐚𝐬𝐢𝐧
𝟗. 𝐌𝐮𝐧𝐝𝐞𝐧𝐢𝐚𝐫𝐮 𝐁𝐚𝐬𝐢𝐧
𝟏𝟎. 𝐆𝐚𝐥 𝐎𝐲𝐚 𝐁𝐚𝐬𝐢𝐧
𝟏𝟏. 𝐇𝐞𝐝𝐚 𝐎𝐲𝐚 𝐁𝐚𝐬𝐢𝐧
𝟏𝟐. 𝐕𝐢𝐥𝐚 𝐎𝐲𝐚

Issued by Hydrology & Disaster Management Division in the Irrigation Department - Sri Lanka at12.00 noon 24th of November 2024

11/10/2024

𝐈𝐬𝐥𝐚𝐧𝐝𝐰𝐢𝐝𝐞 𝐖𝐚𝐭𝐞𝐫 𝐋𝐞𝐯𝐞𝐥 & 𝐑𝐚𝐢𝐧𝐟𝐚𝐥𝐥 𝐒𝐢𝐭𝐮𝐚𝐭𝐢𝐨𝐧 𝐢𝐧 𝐌𝐚𝐣𝐨𝐫 𝐑𝐢𝐯𝐞𝐫𝐬 𝐚𝐬 𝐚𝐭 𝟔.𝟎𝟎 𝐩𝐦 𝐨𝐧 𝟏𝟏𝐭𝐡 𝐨𝐟 𝐎𝐜𝐭𝐨𝐛𝐞𝐫 𝟐𝟎𝟐𝟒.

Issued By the Hydrology & Disaster Management Division in the Irrigation Department

04/07/2024

06/06/2024

𝐈𝐬𝐥𝐚𝐧𝐝𝐰𝐢𝐝𝐞 𝐖𝐚𝐭𝐞𝐫 𝐋𝐞𝐯𝐞𝐥 & 𝐑𝐚𝐢𝐧𝐟𝐚𝐥𝐥 𝐒𝐢𝐭𝐮𝐚𝐭𝐢𝐨𝐧 𝐢𝐧 𝐌𝐚𝐣𝐨𝐫 𝐑𝐢𝐯𝐞𝐫𝐬 𝐚𝐬 𝐚𝐭 09th 𝐨𝐧 06th of June 𝟐𝟎𝟐𝟒.

Issued By the Hydrology & Disaster Management Division in the Irrigation Department

06/06/2024

𝐈𝐬𝐥𝐚𝐧𝐝𝐰𝐢𝐝𝐞 𝐖𝐚𝐭𝐞𝐫 𝐋𝐞𝐯𝐞𝐥 & 𝐑𝐚𝐢𝐧𝐟𝐚𝐥𝐥 𝐒𝐢𝐭𝐮𝐚𝐭𝐢𝐨𝐧 𝐢𝐧 𝐌𝐚𝐣𝐨𝐫 𝐑𝐢𝐯𝐞𝐫𝐬 𝐚𝐬 𝐚𝐭 06.30am 𝐨𝐧 06th of June 𝟐𝟎𝟐𝟒.

Issued By the Hydrology & Disaster Management Division in the Irrigation Department