CoCoRaHS — Community Collaborative Rain Hail Snow Network

~24,000 volunteer observers reporting daily precipitation (rain + snow + hail) across North America. Highest-density volunteer precipitation network. Useful for precipitation event validation post-fact + snow depth ground truth.

Provider	Colorado Climate Center
Delivery mode	stream
CNR score	68
Cadence	P1D
Origin	https://www.cocorahs.org/