Historical clue formulations

• Cold, as agua — 2022-08-21
• Arizona's Agua ___ National Monument — 2018-07-10
• Arizona's Agua ___ River — 2013-11-08
• Like refreshing agua — 2012-11-24
• Cold, as snow in Spain — 2003-04-13
• Cold, to Conchita — 2000-08-16