Nine people died in the building collapse on Thursday.
They attributed worsening flooding in parts of the state to unchecked wetland encroachment and poor urban planning.
The Renevlyn Development Initiative has linked reports of significant revenue leakages in the mining sector to illegal operations of Chinese companies in Nigeria.
He urged the government to act swiftly to prevent further deterioration of the sector.
He argued that the electricity band system had created an unnecessary class divide.
In an interview with journalists on Sunday in Abuja, the CSOs warned that illegal mining would persist if the political will to address it remains weak.
As early as March, the coastal zone of the South-South states of Bayelsa, Rivers, and Akwa Ibom will observe unpleasant rainfall changes.
