Wildfire evidence study · California, United States · 2021
The Beckwourth Complex is a useful example of a real fire component being absent from a particular database release. Its Sugar and Dotta fires appear under a complex identity, while the perimeter release history shows that Dotta was added later. Missing from a dataset does not mean the event never happened.
Documentary review · Sources checked 30 October 2026 · Historical case, not live incident information.
The published event record
| Field | Recorded value |
|---|---|
| Start | Complex archive: 4 July 2021; Sugar archive: 2 July |
| Later milestone | 22 September 2021 (complex archive) |
| Reported acres | 105,670 |
The complex archive names Sugar and Dotta and records 105,670 acres. It displays 4 July 2021 as the start date. Sugar’s separate incident record gives 2 July. CAL FIRE’s release history lists Dotta among missing 2021 perimeters in the April 2022 release and records its addition in the April 2023 release. Those dates distinguish incident occurrence from database availability. See primary records below.
Why the dataset version belongs in the citation
A researcher using the earlier release can obtain a different count from someone using the later one, even if both queries are correct. The difference may reflect coverage, not an ecological trend or a change in fire activity. Version and retrieval date are therefore part of the result, not optional administrative details.
The complex start date also should not replace the ignition dates of its components. An administrative grouping can appear after one member fire has already begun. A timeline built only from the parent entry would miss that distinction and could misalign the earliest weather observations.
For area analysis, choose whether the unit is the complex or the individual components. Do not sum the parent total and component totals together. If using polygons, check identifiers and spatial overlap; the name alone may not reveal a relationship that changed over the course of the response.
The release history supplies evidence of an addition, not a complete explanation of every earlier omission. This article does not infer whether the delay arose from mapping, submission or compilation. Keeping that uncertainty explicit prevents a database-quality observation from becoming an unsupported claim about operational performance.
What this study does and does not establish
No perimeter files were downloaded or spatially compared for this study. The findings concern published event records and release notes, not a newly measured burned area.
This is a documentary evidence review, not fieldwork or an independent forensic investigation. Published numbers retain their source definitions. Differences are identified rather than silently reconciled. The analysis above is Tecnobosque’s interpretation of the cited record.
Primary records and source notes
- Beckwourth Complex: official incident or annual record — chronology, scope and reported figures discussed above.
- CAL FIRE Sugar Fire component record — used only for the findings explicitly attributed in this study.
- CAL FIRE perimeter database release history — used only for the findings explicitly attributed in this study.
Continue the investigation
Why a real fire can be missing from MTBS · Read our evidence-review method · Browse United States cases · Browse the full fire archive
Cite this record
Tecnobosque. “Beckwourth Complex 2021: Sugar, Dotta and Missing Perimeter Records.” Documentary evidence review, 30 October 2026. https://tecnobosque.com/beckwourth-complex-fire-2021/. Cite the underlying primary source when reusing its figures.