USGS CMG InfoBank Atlas: Western Hemisphere hydrometer

Legend:
AF	Africa    [no hydrometer data]
CP	Central Pacific Ocean    [no hydrometer data]
EHEM	Eastern Hemisphere
NA	North Atlantic Ocean    [no hydrometer data]
NAC	North America
NHEM	Northern Hemisphere
NP	North Pacific Ocean    [no hydrometer data]
SA	South Atlantic Ocean    [no hydrometer data]
SAM	South America    [no hydrometer data]
SHEM	Southern Hemisphere    [no hydrometer data]
SOC	Antarctic Southern Ocean    [no hydrometer data]
SP	South Pacific Ocean    [no hydrometer data]