Ground Truth: Forest Service Research · Episode 3 of 10 · 18 min
The 1928 Law That Bolted Down American Forest Science
On May 22, 1928, Congress gave American forest science a permanent legal charter. The McSweeney-McNary Act separated research from forest administration, authorized regional experiment stations, and ordered the first nationwide forest survey. Crews led by Thornton Munger began counting Douglas-fir country trees the next year, turning scattered plots into a national program.
Who's who
- Charles L. McNaryOregon senator who sponsored the act
- John R. McSweeneyOhio representative and House sponsor
- Earle H. Clapp+1 more episodeForest Service research leader who made the case for independent research
- Thornton T. Munger+1 more episodeLed the first Forest Survey in the Douglas-fir region in 1929
Where it happens
- Douglas-fir region, Oregon and WashingtonSite where the first national Forest Survey began in 1929
- Madison, Wisconsin+3 more episodesHome of the Forest Products Laboratory
- Fort Valley, Arizona+1 more episodeFirst regional experiment station, 1908
Timeline
- 1908First regional forest experiment station set up in the Southwest
- 1915Research Branch created within the Forest Service
- May 22, 1928McSweeney-McNary Forest Research Act becomes law
- 1929Nationwide Forest Survey begins in the Pacific Northwest
- 1941About half the country's forest area inventoried before the survey pauses
- 1978Act repealed and replaced by the Forest and Rangeland Renewable Resources Research Act
Still debated
Sources disagree on how many stations the act authorized, with 12 and 14 both cited. The six research lines are a durable shorthand rather than a verbatim statutory list.