How did sand mining activities cause Sungai Sayong Pinang to become shallower?

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Sand Mining Activities Led to Siltation and Shallower Depths in Sungai Sayong Pinang

Sand mining activities caused Sungai Sayong Pinang to become shallower due to a bund pond bursting in October of the previous year. This incident released a substantial amount of silt, or sediment, into the river, leading to thick deposits that reduced its depth. The consequences of this siltation have been significant, affecting local fishermen and the river's ecological functions.
Bund Pond Burst Released Large Quantities of Silt

The primary cause of the river's shallowing was the bursting of a bund pond associated with sand mining operations. This event, which occurred on October 31st, resulted in a massive influx of sediment into Sungai Sayong Pinang. This sediment formed extensive deposits along the riverbed, directly contributing to the reduction in water depth.
Silt Deposits Significantly Reduced River Depth

The sediment entering Sungai Sayong Pinang created thick layers on the riverbed, a phenomenon described as siltation. This process is not a temporary issue; the fine sediment that settled does not disappear quickly without intervention. Experts note that such deposits can remain for weeks to months, especially in shallower areas and slower-moving parts of the river.
Shallower River Impacts Fishermen and Navigation

The continued sedimentation has led to a progressively shallower river, impacting the livelihoods of approximately 150 fishermen. They have reported a decline in their income and river catch, with the river's depth in some areas reducing to thigh level. This has forced fishermen to alter their routes, travelling for two to three hours to alternative fishing grounds in Sungai Linggiu and upstream areas while awaiting the recovery of Sungai Sayong Pinang. The shallowness also poses risks to small boat navigation.
Ecological Functions and Habitat Disrupted

Beyond the immediate impact on human activities, the silt deposits have disrupted the river's ecological functions and fish habitats. When silt covers the river bottom, it can destroy fish breeding areas, reduce populations of benthic organisms, and cause sensitive species to migrate upstream. This has direct repercussions for communities, including Orang Asli, who depend on the river's resources, and for cage fishermen.

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How did sand mining activities cause Sungai Sayong Pinang to become shallower?

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