# Flood Warning Issued for Low-Lying Areas Along Deduru Oya as Reservoir Releases Water

- Link: https://www.weather.lk/flood-warning-issued-for-low-lying-areas-along-deduru-oya-as-reservoir-releases-water/
- Published: 2026-10-22T10:40:12+05:30
- Author: WeatherLK

The Irrigation Department has issued a flood warning for several low-lying areas
along the Deduru Oya following heavy rainfall in the upper and middle reaches of
the river basin.

According to the Hydrology and Disaster Management Division of the Irrigation Department,
water levels in the Deduru Oya are approaching flood level. As a precautionary measure,
the spillway gates of the Deduru Oya Reservoir have been opened, allowing a substantial
volume of water to flow into the river.

Water is currently being released from the reservoir at approximately **16,500 cubic
feet per second**. Authorities have warned that the discharge rate could be increased
further depending on the volume of water flowing into the reservoir.

The situation has raised concerns about possible flooding in low-lying areas along
the Deduru Oya basin, particularly if heavy rainfall continues and water inflows
increase.

## **Areas Under Deduru Oya Flood Warning**

The flood warning covers vulnerable low-lying areas within the following Divisional
Secretariat Divisions:

 * Wariyapola
 * Nikaweratiya
 * Maho
 * Kobeigane
 * Bingiriya
 * Pallama
 * Chilaw
 * Arachchikattuwa
 * Rasnayakapura

Residents living in these areas have been strongly advised to remain alert and take
appropriate precautions in response to the rising water levels and reservoir water
releases.

Motorists travelling along roads in the affected locations have also been urged 
to exercise extreme caution, as flooding could affect road conditions and make some
routes dangerous or impassable.

## **Authorities Urge Residents to Remain Vigilant**

The Irrigation Department has requested disaster management authorities to take 
the necessary precautionary measures to minimise potential risks to people and property.

Residents in flood-prone locations are advised to monitor official announcements,
remain aware of changing river conditions and follow instructions issued by local
authorities. People living close to the river and in low-lying areas should be particularly
cautious as water levels and discharge rates may change depending on rainfall and
reservoir inflows.

The warning was issued by Engineer L.S. Sooriyabandara, Director of Irrigation (
Hydrology and Disaster Management) at the Irrigation Department.

Authorities are closely monitoring the situation as water continues to be released
from the Deduru Oya Reservoir. Residents in the affected areas are urged to take
the warning seriously and remain prepared for possible flooding.

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