Word of the week lesson is..... From the dictionary!
of, relating to, or brought about by a flood
Archeologists studying diluvial deposits found along the river delta could make estimates from that evidence on just how far certain Paleolithic species had migrated.
"When regions were drained after long-standing inundations they had accumulated rich diluvial and alluvial soil valuable for growing a wide variety of crops and also for pasturage for sheep, cattle, goats and horses." -- From Joseph Roisman and Ian Worthington's 2010 book A Companion to Ancient Macedonia