_summa aqua_—the surface of the water.
_ex aqua exstare_—to stand out of the water.
_aqua est umbilīco tenus_—the water reaches to the waist.
_aqua pectus aequat, superat_—the water is up to, is above, the chest.
_(se) ex aqua emergere_[1]—to come to the surface.
_aquam ex flumine derivare_—to draw off water from a river.
_aquam ducere per hortum_—to bring a stream of water through the garden.
_aquae ductus_ (plur. _aquarum ductus_)[2]—a conduit; an aqueduct.
_agros irrigare_—to irrigate fields.
_aqua viva, profluens_ (opp. _stagnum_)—running water.
_aqua iugis, perennis_—a perpetual spring.
_frigidā, calidā lavari_ (Plin. Ep. 3. 5. 11)—to take a cold, warm,
bath.
_aquae, aquarum inops_—ill-watered.
_fluctuare_ or _fluctuari_—driven by the waves.
_fluctibus iactari_—tossed hither and thither by the waves.
_fluctibus (undis) obrui_,[3]_submergi_—to be engulfed.
_gurgitibus hauriri_—to be drowned in the eddies.
_flumen citatum fertur_—the rivers flows with a rapid current.
_flumen imbribus auctum_—a river swollen by the rain.
_flumen super ripas effunditur_—the river is over its banks, is in
flood.
_flumen extra ripas diffluit_—the river is over its banks, is in flood.
_flumen agros inundat_[4]—the river floods the fields.
_flumen vado transire_—to wade across, to ford a river.
_flumine secundo_—with the stream; downstream.
_flumine adverso_—against the stream; upstream.
_Rhenus oritur_ or _profluit ex Alpibus_—the Rhine rises in the Alps.
_accessus et recessus aestuum_—ebb and flow (of tide).
_decessus aestus_—the ebb.
_aestus maritimi mutuo accedentes et recedentes_ (N. D. 2. 53.
132)—the alternation of tides.
_aestus ex alto se incitat_ (B. G. 3.12)—the tide is coming in.
_aestu rursus minuente_—when the tide begins to go down.
_mare ventorum vi agitatur et turbatur_—there is a storm at sea.
_mare medium_ or _internum_[5]—the Mediterranean Sea.
[1] Also used metaphorically, e.g. _(se) emergere ex malis_ (Nep. Att.
11. 1) to recover from misfortune. So _emergere e fluctibus
servitutis_ (Harusp. Resp. 23. 48).
[2] _aquae ductio_ = the action, process of drawing off the water;
_canalis_ = the water-pipe, channel, conduit.
[3] So metaphorically, _aere alieno obrutum esse_, to be over head and
ears in debt; _nomen alicuius obruere perpetua oblivione_, to drown a
person's name in oblivion.
[4] Inundation = _eluvio_, not _inundatio_ which is post-classical.
[5] The Romans called it _mare nostrum_ (B.G. 5.1). Similarly _mare
Oceanus_ (B. G. 3. 7), the Atlantic; _mare superum_, the Adriatic
(Att. 8. 16. 1); _mare inferum_, the Etruscan Sea (Att. 8. 3. 5).