Northwestern Forested Mountains
ecoregion
The Northwestern Forested Mountains is a Level I ecoregion of North America designated by the Commission for Environmental Cooperation (CEC) in its North American Environmental Atlas.
Hydrology
Most of the water in this ecoregion is fresh water and contained in rivers, lakes, and groundwater. Washington, Oregon, and Idaho are mainly drained by the Columbia River, its tributaries, and other streams that flow to the Pacific Ocean. The Columbia River Basin is the fourth largest watershed in North America. According to a 2004 GIS inventory by the Environmental Protection Agency, there are approximately 10,535 lakes and reservoirs in the Pacific Northwest. The largest lakes in the Pacific Northwest include Lake Washington, Lake Roosevelt, Lake Chelan, Upper Klamath Lake, Lake Pend Oreille, Priest Lake, and Lake Coeur d'Alene.
In British Columbia, the Fraser River watershed covers one-fourth of the land and extends from Mount Robson to the Georgia Strait and Gulf Islands. This basin is the fifth largest drainage basin in Canada and contains thirteen main sub-watersheds, each consisting of small rivers, streams, creeks, marshes, bogs, and swamps. The largest lake in British Columbia is Williston Lake which covers 680 square miles (1,800 km2).
Alaska contains abundant natural resources which include ground and surface water.
“Northwestern Forested Mountains” enters the record as ecoregion. Crown Archives preserves that source wording while asking what Northwestern, Forested and Mountains can confirm, complicate or overturn.
Why this record matters
“Northwestern Forested Mountains” is worth following because a concise public description often conceals a longer documentary argument. Here, Northwestern, Forested and Mountains provides the most credible route into that argument.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Sep 15, 2026. The linked authority identifier is Q115915678. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2004.
Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Northwestern Forested Mountains”, its source revision and the description used here.
- Expand the search: follow Northwestern Forested Mountains primary sources, Northwestern Forested Mountains archive and Northwestern research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Northwestern Forested Mountains”?
- Which cited source is closest to the event, object or claim?
- Which institution is responsible for the underlying evidence?
Search terms from this dossier
This entry incorporates text from “Northwestern Forested Mountains” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.