Historical clue formulations

• German river to the North Sea — 2026-04-22
• River through Bohemia — 2021-09-24
• North Sea feeder — 2019-10-09
• River that formed part of the border between East and West Germany — 2019-02-26
• Dresden's river — 2015-03-04
• River into which the Vltava flows — 2014-07-12
• River to the North Sea — 2013-12-09
• Czech Republic river — 2013-06-11
• Dresden's river — 2011-08-07
• German river to the North Sea — 2011-07-18
• German river where American and Soviet forces met in 1945 — 2010-11-29
• River through Dresden — 2010-10-09
• Hamburg's river — 2010-04-07
• Hamburg's river — 2009-02-18
• Hamburg's river — 2008-12-31
• River of Saxony — 2008-12-04
• Dresden's river — 2008-10-13
• Hamburger's course? — 2008-09-26
• River forming the eastern border of Charlemagne's empire — 2008-06-14
• North Sea feeder — 2008-04-02
• Hamburg's river — 2006-08-15
• Hamburg's river — 2006-07-04
• River whose name means "river" — 2005-01-29
• Hamburg's river — 2002-09-07
• River to the North Sea — 2002-06-30
• Dresden's river — 2000-12-11
• Wittenberg's river — 1999-12-09
• German river to the North Sea — 1999-03-08
• Hamburg's river — 1997-11-22
• River to the North Sea — 1996-05-30
• Hamburg's river — 1996-03-07
• North Sea feeder — 1995-05-30
• North Sea tributary — 1995-04-17
• Hamburg's river — 1994-12-31
• Dresden's river — 1994-02-13