Historical clue formulations

• Earthy deposits by a river — 2026-01-05
• Amazon deposits — 2023-06-08
• River deposits — 2023-04-20
• Buildups in deltas — 2023-03-24
• Accumulating bank deposits? — 2021-12-15
• Deposits in some banks — 2019-07-05
• River deposits — 2017-09-25
• Some bank deposits — 2010-02-28
• Alluvia — 2004-01-18
• Gets choked (up) — 2003-06-20