The issue of deepening these rivers had been raised by ex-assemblyman of Melalap in the year 1997 who was then the Minister of Youth and Sports Datuk Kadoh Agundong.
However, the plan was refocused by Kemabong Assemblyman Datuk Rubin Balang in 2009 but the complaints were ignored despite the flood threat worsened followed by land erosions.
In relation to the incident, there were several locations at the river which eroded causing several negative perceptions claiming that it was caused by the Pangi hydroelectric dam but the claim was denied by SESB consultants in a series of briefing to the media previously.
The problem is believed to have been caused by mud flood coming from nearby hills and logging activities during the 90s resulting in the rivers to become shallow.
On Nov 2013, Senator Datuk Dr Lucas Umbul had also voiced out the same problem in Parliament.
He had asked the federal government on the measures taken on the flooding problem in Sabah especially in Tenom which had resulted in the loss of properties among the residents.
The opposition on the other hand, had also criticised the government regarding the issue of flood aid in Sabah.
"We have seen our Prime Minister presenting allocation cheques worth RM9.6 million in Kemaman, Terengganu on Sunday but we cannot even see dust in Sabah," said PKR Division Head Masdin.