Assessment of the Water and Sediment Quality of Tropical Forest Streams in Upper Reaches of the Baleh River, Sarawak, Malaysia, Subjected to Logging Activities

Table 4

Classification of water quality of the six sampling stations before and after rain according to WQI.

Station	Class							Status
	AN	BOD5	COD	DO	pH	TSS	WQI
1	II	II	III	II	I	I	II	Clean
2	II	III	III	II	I	I	II	Clean
3	III	III	III	II	I	I	II	Clean
4	III	III	II	I	I	I	II	Clean
5	II	III	IV	II	I	I	II	Clean
6	III	III	IV	II	I	I	II	Clean
4r	III	III	IV	I	I	III	II	Slightly polluted
5r	III	III	III	I	I	III	II	Slightly polluted
6r	III	III	IV	II	II	IV	III	Slightly polluted

r: after rain.