# The United States declared the first Tier 1 shortage on the Colorado River

Date: 2021

_No public text on this fact yet._

## Drivers

- Water Scarcity: https://factrail.ai/drivers/water-scarcity

## Sources

_Sources are listed on the canonical page._

## Methodology

https://factrail.ai/methodology

Canonical: https://factrail.ai/facts/colorado-river-first-tier-one-shortage-declared-2021