• Organization: State of Connecticut
• Updated: 2026-01-20

This map contains layers for above ground resources, district polygons, and a presence/absence archaeological grid for the state of the Connecticut.

• html

• Organization: State of Connecticut
• Updated: 2026-01-27

The boundaries of the district polygons are both modified and unmodified pre-existing polygons provided by NPS and SHPO, as well as new, previously unmapped districts. For the previously unmapped...

• csv
• json
• kml
• zip
• html
• json

• Organization: State of Connecticut
• Updated: 2026-01-27

The boundaries of the district polygons are both modified and unmodified pre-existing polygons provided by NPS and SHPO, as well as new, previously unmapped districts. For the previously unmapped...

• csv
• json
• kml
• zip
• html
• json

• Organization: State of Connecticut
• Updated: 2023-12-13

This layer denotes the presence of archaeology sites utilizing a grid based on the U.S. National Grid (10,000 m) divided into nine sections per 10,000 m grid. The red symbology represents the...

• csv
• json
• kml
• zip
• html
• json

• Organization: State of Connecticut
• Updated: 2026-01-27

The boundaries of the district polygons are both modified and unmodified pre-existing polygons provided by NPS and SHPO, as well as new, previously unmapped districts. For the previously unmapped...

• csv
• json
• kml
• zip
• html
• json

• Organization: State of Connecticut
• Updated: 2024-03-15

The boundaries of the district polygons are both modified and unmodified pre-existing polygons provided by NPS and SHPO, as well as new, previously unmapped districts. For the previously unmapped...

• html
• json

• Organization: State of Connecticut
• Updated: 2026-02-26

These points are directly sourced from the National Historic Landmarks, National Register, State Register, Local Historic Districts, Local Historic Places, Historic Resources inventories, CHC...

• csv
• json
• kml
• zip
• html
• json