Historical clue formulations

• Dodger Stadium is built on one — 2023-09-17
• Ditch — 2022-02-19
• Gorge — 2020-02-09
• Deep gorge — 2019-08-28
• Gorge — 2019-06-14
• Large gully — 2010-04-12
• Coulee — 2008-11-23
• Result of stream erosion — 2008-04-16
• Gully — 2003-09-17
• Narrow cleft — 2003-03-30
• Product of erosion — 2002-07-13
• Gorge — 2001-03-18
• Runoff spot — 2000-06-18
• Coulee — 1999-12-25
• Stream site — 1998-08-08
• Runoff point — 1998-07-14
• Product of erosion — 1998-03-22
• Gorge — 1996-10-19
• Gully — 1996-08-06
• Roadside hazard — 1995-12-29
• Large gully — 1995-11-03
• Gorge — 1994-04-18