Plains Like Savé Valley

Volta Basin

Plain

5.29 Mediocre

Benue Trough

Plain

4.88 Poor

Brahmaputra Plain

Plain

6.88 Fair

Orinoco Plains

Plain

6.67 Fair

Limpopo Basin

Plain

5.96 Mediocre

Ganges Plain

Plain

8.60 Great

Serengeti Plain

Plain

8.42 Great

Nile Valley

Plain

8.35 Great

Central Lowlands of Thailand

Plain

8.30 Great

Barotse Floodplain

Plain

8.25 Great

Brahmaputra Valley

Plain

8.20 Great

Ganga-Yamuna Doab

Plain

8.10 Great

Niger Delta plains

Plain

8.05 Great

Okavango Basin

Plain

7.87 Good

Coromandel Coast plain

Plain

7.45 Good

Lomami River

River

7.00 Good

Chao Phraya Plain

Plain

6.92 Fair

Indo-Gangetic Plain

Plain

6.76 Fair

Niger Delta Plain

Plain

6.72 Fair

Central Plain of Thailand

Plain

6.72 Fair

Pungwe River

River

6.55 Fair

Awadh Plain

Plain

6.44 Fair

Sudan Plains

Plain

6.42 Fair

Mekong Plain (Cambodia)

Plain

6.42 Fair