Sorsogon rivers watched for fish kill after lahar flow | Inquirer News
MT. BULUSAN HAZARD

Sorsogon rivers watched for fish kill after lahar flow

/ 04:35 AM June 29, 2022
A thick layer of ash caused by the phreatic eruption of Bulusan Volcano blanketed the villages of Bacolod and Buraburan in Juban town in Sorsogon on Sunday

A thick layer of ash caused by the phreatic eruption of Mount Bulusan blanketed the villages of Bacolod and Buraburan in Juban town in Sorsogon on Sunday, June 5, 2022. (Photo from the Sorsogon Provincial Information Office)

LEGAZPI CITY, Albay, Philippines — Sorsogon officials have been closely monitoring waterways and major rivers connected to the slopes of Mount Bulusan for possible fish kill, following a minor lahar flow on Sunday.

The provincial government earlier confirmed that the rain-triggered lahar flow was observed in the villages of Rangas, Añog and Calatagan in Juban town and along the Cadac-an River in Irosin town.

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Leo Tabing, municipal agriculturist of Juban, said they warned fishermen and farmers near the streams and rivers of the possible threat of lahar.

In the June 5 eruption of the volcano, about P100,000 worth of tilapia was lost to a fish kill in a fishpond in Juban due to ashfall.

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Nonie Enolva, the Bureau of Fisheries and Aquatic Resources Bicol spokesperson, said the lahar flow could trigger another fish kill as volcanic debris in rivers could clog fish gills, cause algal bloom and decline in plankton population.

Catch basin

Juban is a catch basin of water coming from Mt. Bulusan, making it more vulnerable to lahar flow, said Arvee Lodronio, the town’s disaster response chief.

The Philippine Institute of Volcanology and Seismology said the lahar flow on Sunday was detected by seismic and infrasound stations of the Bulusan Volcano Network along Calang Creek in Barangay Cogon, Irosin.

April Dominguiano, Bulusan resident volcanologist, said the flow consisted of only a small volume but continuous heavy rain could still move the debris on the volcano’s upper slopes.

—MA. APRIL MIER-MANJARES

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TAGS: Mount Bulusan eruption, Sorsogon lahar flow
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