Yilan local stumbles upon thousands of dead fish in canal
Yilan local stumbles upon thousands of dead fish in canal
2026-06-30
At 4 a.m. Tuesday, a Yilan local happened upon thousands of dead fish floating on the surface of Tarrochan Canal, right by Guangrong Road in Luodong Township. The local Environmental Protection Bureau immediately dispatched officers to assess the water quality. They found that although the pH levels were normal, the dissolved oxygen levels were not. At only 0.5 to 0.8mg per liter, it falls considerably below the 2.0mg per liter threshold for critical hypoxia. Officials are determining whether a sudden rise in temperature or illegal dumping of chemical waste is to blame.
Looking down from the embankment, one can see a large mass of white floating objects on the surface. Zoom in, and you’ll find numerous dead fish. The carcasses stretch several tens of meters, covering the water surface. Some have made their way further downstream.
Lin Chieh-chao
Dong’an Borough warden
It’s probably because the water’s too shallow and the sunlight is too strong. It’s hypoxia.
Lee His-chin
Luodong Township representative
For this stretch of water, over the years we’ve observed that every summer, it dries up all the way to the river bed, leaving it without water. Fish need water. Without sufficient oxygen levels, the fish will certainly die.
At 4 a.m. Tuesday, a local of Yilan’s Luodong Township was strolling along Tarrochan Canal when they got hit by a stench. Taking a look at the surface, they discovered a huge number of dead fish. They immediately reported the sighting to authorities. Soon afterwards, the local Environmental Protection Bureau dispatched officers to assess the water quality. They found that although the pH levels were normal, the dissolved oxygen levels were not. At only 0.5 to 0.8mg per liter, it falls considerably below the 2.0mg per liter threshold for critical hypoxia.
Chen Chih-hao
Yilan Irrigation Agency
From what we saw, we suspect that someone had sneakily dumped chemical waste, because the number of dead fish was huge, and even the hardiest bottom cleaners died.
Voice of Hu Pi-hui
Yilan Environmental Protection Bureau
At the moment, we’ve made our way upstream for inspections, and did not find any instances of abnormal runoff.
Officials are determining whether a sudden rise in temperature or illegal dumping of chemical waste was the culprit in the mass death of fish in the canal. At the moment, the carcasses have been removed and a physical barrier has been pulled up to prevent any individual dead fish from floating into the ocean.
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缺氧或排廢水釀禍? 宜蘭打那岸圳漂浮"破萬尾魚屍"
2026-06-30
週二清晨四點多，有民眾發現宜蘭羅東光榮路段的打那岸圳，出現大批魚群死亡，死魚數量可能破萬。環保局立刻派員檢驗水質，水中pH酸鹼值正常，但含氧量只有0.8至0.5左右，幾乎沒有氧氣。含氧量降低的原因，是氣溫突然升高，還是上游偷排化學溶劑，還有待檢驗。
從岸邊往下看，水面上漂浮大批白色物體，將鏡頭拉近，竟然全都是已經翻肚的魚群。死魚群綿延數十公尺，占滿整個河道，還有不少魚屍順著水流往下游流去。
[[宜蘭羅東東安里長 林捷肇]]
“可能水太淺，這個太陽太大，缺氧啦。”
[[羅東鎮民代表副主席 李錫欽]]
“因為這條，到現在長年累月到這個時候，夏天的時候，整個河床都乾涸，沒水，沒有水，魚本來就是需要水的，含氧量不夠，一定死的啦。”
週二清晨四點多，宜蘭羅東，有民眾沿著打那岸圳散步，經過光榮路段時，聞到陣陣惡臭，探頭一看，發現河裡出現大量死魚，趕緊通報相關單位。環保局立刻派員到場檢驗水質，發現水中PH酸鹼值正常，但含氧量只有0.8至0.5左右，比標準的2少了許多，水中幾乎快沒氧氣。
[[宜蘭農田水利署羅東站長 陳志豪]]
“我們觀察應該是疑似有人偷排化學藥劑，因為它(死魚)的量很大，而且連垃圾魚都死掉。”
[[聲音來源：宜蘭環保局科長 胡壁輝]]
“目前我們沿著這個水體往上游去做巡查，那到上游都沒有看到有異常的水質排放的狀況。”
整片的死魚，到底是夏天太熱，導致含氧量不足，還是上游有人偷排，仍待動進一步檢驗。現階段環保局先將死魚撈起，並拉起下游水閘門，防止漏網死魚流入大海。
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