The IMOLA Project conducted the water and sediment survey to provide a better and scientific understanding of the current status of aquatic environment in the Tam Giang-Cau Hai Lagoon. The surveys covered the entire waterbody, from the north (Tam Giang) to the south (Cau Hai), with repeated sampling at 37 stations in four months in 2006. The data was then interporated to create following maps. For more detail, please refer to our page on water and sediment survey.

Salinity (04/2006)	Salinity (05/2006)	Salinity (08/2006)	Salinity (11/2006)
DO (04/2006)	DO (05/2006)	DO (08/2006)	DO (11/2006)
BOD (04/2006)	BOD (05/2006)	BOD (08/2006)	BOD (11/2006)
COD (04/2006)	COD (05/2006)	COD (08/2006)	COD (11/2006)
pH (04/2006)	pH (05/2006)	pH (08/2006)	pH (11/2006)
NH3/NH4 (04/2006)	NH3/NH4 (05/2006)	NH3/NH4 (08/2006)	NH3/NH4 (11/2006)
Total N (04/2006)	Total N (05/2006)	Total N (08/2006)	Total N (11/2006)
Total P (04/2006)	Total P (05/2006)	Total P (08/2006)	Total P (11/2006)
Chlorophyll a (04/2006)	Chlorophyll a (05/2006)	Chlorophyll a (08/2006)	Chlorophyll a (11/2006)