Table 6: Biomass of Salvinia molesta calculated in various rivers, pools and lakes in the Okavango Delta, Kwando, Linyanti and Chobe Rivers and year of control achieved. Example: 0.154 km² equals to154000 m²; 154000*0.48/1000 = 73.92 or 73.9.

River/Wetland	Pool/Lagoon	Total area (km2)	Area infested (km2)	Dry biomass (tons)	Control achieved
OkOkavango Delta
Khwai River	Dombo Lake	0.325	0.154	73.9	Oct. 2001
Khwai River	Oyi Pool	0.726	0.288	138.2	Dec. 2003
Khwai River	Paradise pool	0.083	0.040	19.2	Oct. 2000
Khwai River	HATABl & 4th Bridge Pools	0.071	0.039	18.7	Oct. 2015
Xini River	Pools	0.194	0.117	56.2	DeDec. 2003
Xini River	Xini Lake	0.238	0.232	111.4	Jan. 2010
Mogogelo River	Black pool	0.026	0.026	12.5	Nov. 2012
Mogogelo River	Wetland pools	0.055	0.027	13.0	Mar. 2006
Mogogelo River	Abaqao pools	0.096	0.050	24.0	Oct. 2002
Santantaidibe River	Ditshipi Pool 1 & 2	0.391	0.364	174.2	Nov. 2005
Wetland Channel	Bodumatau pool 1 & 2	0.257	0.115	55.2	May 2012
Kwando-Linyanti-Chobe River system
Kwando River	Lebala pools	0.360	0.150	72.0	Feb. 2002
Kwando River	Selinda canal	0.068	0.038	18.2	JaJan. 2003
Chobe River-Ngoma	Wetland poolsspan>	0.016	0.012	5.8	MaMar. 2012