Cagayan de Oro flooding caused by severe soil erosion due to gold mining, says Xavier University study

GMA News Online-citing an article on the study done by the Kinaadman Research Center of Cagayan de Oro’s Xavier University-reports that "small-scale mining for gold along the Iponan River-one of the seven rivers that run through now flood-ravaged [city]- has caused ’severe erosion.’" The article, "The Price of Gold" by Vanessa Gorra, appeared inXavier Magazine’s July-September 2011 issue.

GMA News Online-citing an article on the study done by the Kinaadman Research Center of Cagayan de Oro’s Xavier University-reports that "small-scale mining for gold along the Iponan River-one of the seven rivers that run through now flood-ravaged [city]- has caused ’severe erosion.’" The article, "The Price of Gold" by Vanessa Gorra, appeared inXavier Magazine’s July-September 2011 issue.

 


Gorra wrote: "Severe erosion is found in Tumpagon and Pigsag-an, barangays ensconced on mountainous terrain with varied landscapes and pronounced slopes. According to researchers from the [XU] College of Engineering, these areas fall within the landslide risk area. The hydraulic mining for gold along the Iponan has changed the natural landscape and stability of the mountain. Pits created from flush mining (about 50 of them) left craters of 100-500 cubic meters, which could result in massive mudflows to the Iponan River.  Silt deposits are estimated to be around 123 metric tons per year from the upstream barangays."

 

The GMA News Online report also quoted Department of Science and Technology Secretary Mario Montejo, who explained,  "The natural waterways in Cagayan and Iligan could not cope with the large volume of rain" that fell on trhe country last December 16, which led to flash floods in the cities."

 

For more on this story, log on to GMA News Online.

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