Maine Boring Logs & Geotechnical Data
1,968 public boring logs in Maine; 52 with digitized SPT, soil or CPT data; 1,916 scanned log PDFs. Collected from publicly posted geotechnical reports. Free to search on the map, download or query by API.
Where the data comes from
Web-crawled reports in Maine were published on, among others: maine.gov, parcelsfolder.portlandmaine.gov, semspub.epa.gov, auburnmaine.gov, lldc.mainelegislature.org, ci.lewiston.me.us.
Counties with the most boring logs
| County | Boring logs | |
|---|---|---|
| Cumberland | 318 | view on map |
| Aroostook | 236 | view on map |
| Penobscot | 231 | view on map |
| York | 176 | view on map |
| Kennebec | 165 | view on map |
| Androscoggin | 127 | view on map |
| Somerset | 109 | view on map |
| Oxford | 107 | view on map |
| Washington | 103 | view on map |
| Hancock | 87 | view on map |
| Lincoln | 80 | view on map |
| Sagadahoc | 62 | view on map |
What's in a boring log from Maine
The 52 digitized borings carry the data engineers actually use: SPT blow counts (N-values) by depth, soil and rock descriptions, groundwater observations and, where the source ran cone penetration tests, CPT tip resistance and sleeve friction. A further 1,916 logs are scanned PDF reports — the original agency drawings — which you can open and download from the map. Holes are typically about 19 ft (6 m) deep; one in twenty goes past 60 ft (18 m). Not sure what a boring log looks like? See annotated example boring logs.
How to get this data
- Map — pan to a site, click a boring, and view the log, the original PDF, or an ML soil-profile prediction. No account needed.
- Downloads — every boring exports as PDF, DIGGS XML or AGS4; draw a polygon on the map for a multi-boring export or a site report.
- API — query borings by coordinates or bounding box, pull SPT/CPT/lab records, and generate site reports programmatically.
- Contribute — have Maine boring logs that are not here yet? We take PDFs, DIGGS, AGS and spreadsheets.
This data was collected from public agencies and is republished as-is. It is a planning tool, not a substitute for a site investigation; see the terms and disclaimer. Counts refreshed 2 September 2026.
Other places
Florida (168,718)Washington (151,445)North Carolina (99,509)Ohio (78,203)Oregon (61,067)New Jersey (49,412) all regions →