Interstate water dispute resolution is routine federalism governance. A-score minimal: rule_of_law (1) for interstate compact framework, separation (1) for federal-state coordination, weighted to 0.52*1.05=0.55. No mechanism specified, no constitutional damage pathway identified. B-score low at 1.65: minimal novelty (1) as climate-water stories common, media_friendliness (2) for regional interest only. This is standard administrative/judicial process for water rights allocation under existing frameworks. No distraction indicators, no constitutional threat. Clear noise event - routine governance with no transformative impact.