How this is built
Methodology
What data Stumpage pulls, where it comes from, and how often each source is checked.
What we pull, and from where
Six public agency sources cover the Pacific Northwest. From each we read the same fields per sale where the source publishes them: sale name, region or forest, county, species, offered volume, minimum bid, winning bid, bidder count, high bidder, sale date and status.
- Washington DNR: the monthly state trust-land auction result sheets, plus the annual result books for history, the deepest source on the board.
- Oregon Department of Forestry: the published auction results table, including the bidder ladder.
- US Forest Service Region 6: the per-forest results and advertisement tables. Only some R6 forests publish them, and only a few fiscal years stay on the page, so federal results run shallower than state ones.
- Montana DNRC: the per-sale bid summaries for sold trust-land and Good Neighbor Authority sales.
- Idaho Department of Lands: the public sale feed for the advertised auction calendar (it lists volumes but no winning bids), plus the State Board of Land Commissioners' monthly meeting packets, which is where IDL auction results are read from once the board papers publish.
- BLM western Oregon: the sale notices, which carry the advertised calendar, offered volume and species, not per-sale results.
State sales are scaled in thousand board feet (MBF) and federal sales in hundred cubic feet (CCF), and some Idaho and Montana sales are cruised and sold by the ton. These are different measures of wood, so every price on the site carries its unit and the units are never blended.
How often
Every source is checked once a day. When new completed results land, an issue goes out the same day; when nothing new has published, no issue goes out. Each sale is dated to its auction date, the date printed on the result or notice, so a backfill of older results reads as its own period, not as news.
For how to read the numbers once they are in front of you, see how to read this.
Republishing our charts and statistics
The charts and statistics on Stumpage are free to republish. Use them in an article, a report, a class, a presentation, or a post — you do not need to ask us first. We ask one thing in return: credit Stumpage with a visible link back to the page you took the figure or chart from, and keep that link live.
Every chart has an Embed chart button with a snippet you can paste straight into a web page. Because it points at the live image, the chart you embed today keeps updating itself as new data lands — you never have to swap in a fresh screenshot. Every data page, guide, and issue has a Cite button that hands you a ready-made citation line, including the date the data runs through. If you are quoting a number, keep that date: it is what tells your reader how current the figure is.