Unearthed (with "up")

• Deepened, as a canal
• Sprinkled with flour
• Unearthed, with "up"
• Changed channels, in a way
• Brought (up), as from the distant past
• Scraped the bottom of
• Scraped (river bottom)
• Hauled up (from depths)

Wiktionary Word definitions in Wiktionary
vb. (en-past of: dredge )