Words to Describe reservoirs

How reservoirs often is described ("________ reservoirs")

• shallow
• principal
• smaller
• hidden
• untapped
• big
• fractured
• hot
• vast
• stratified
• depleted
• geothermal
• made
• subsurface
• porous
• several
• deep
• temporary
• great
• covered
• tight
• potential
• productive
• environmental
• small
• natural
• additional
• permanent
• purpose
• huge
• conventional
• important
• suitable
• main
• open
• subterranean
• artificial
• freshwater
• underground
• animal
• liquid
• auxiliary
• inexhaustible
• deeper
• linear
• separate
• larger
• wild
• upstream
• elevated
• immense
• large
• numerous
• hydroelectric
• irrigation
• rodent
• concrete
• largest
• thermal
• condensate
• major
• extensive
• enormous
• multiple