About the Collection

Environmental Impact Statements (EIS) are federal documents required under the National Environmental Policy Act (NEPA) of 1969. Each statement captures a moment in time — the ecological conditions, human communities, and policy debates surrounding a proposed project or land-use decision.

This archive brings together digitized EIS documents as searchable, browsable records. Each entry includes location data, key figures, historical context, and the original document for in-depth study.

What you'll find

• Primary source documents and supporting studies
• Records organized by location, theme, and date
• Historical context written to situate each statement in its time