Loch Raven Dam: An Unidentified UFO Encounter Examined

Introduction

The incident is often presented in UFO literature as a classic “close encounter with electromagnetic effects” case. However, the surviving record is limited: the strongest evidence consists of witness testimony and investigative paperwork, while there are no photographs, physical samples, radar records, or independently verified traces from the event. The enduring debate is therefore not whether the witnesses reported something unusual, but how confidently their account can be interpreted.[NICAP]nicap.orgUFO ReportUFO ReportOctober 26, 1958…Published: October 26, 1958

What happened at Loch Raven Dam in 1958?

The reported encounter

According to the case file, Small and Cohen were travelling by car near Loch Raven Dam at around 10:30 p.m. on 26 October 1958. They reported seeing a luminous, flat, egg-shaped object positioned above a bridge. The Project Blue Book documentation described the object as approximately 75–100 feet long, glowing, and hovering before ascending vertically. The report recorded that the object was visible for roughly a minute before disappearing.[Wikimedia Commons]upload.wikimedia.orgProject Blue Book report 1958 10 7201675 NOfBaltimore MdWikimedia Commons1958-10-7201675-NOfBaltimore-MdJanuary 6, 2015…Published: January 6, 2015

The most unusual part of the account was the claimed interaction with the vehicle. The witnesses said that as they moved closer, their car suddenly stopped functioning, with the failure described as if the ignition had been switched off. They were unable to restart it while the object was present. After the object flashed brightly and departed, they reported that the vehicle returned to normal operation.[NICAP]nicap.orgUFO ReportUFO ReportOctober 26, 1958…Published: October 26, 1958

The witnesses also described physical sensations during the event. They reported feeling heat from the object and later claimed that their skin was reddened or irritated on the side facing the light. Later retellings of the case describe the men seeking medical attention, although the available case summaries do not provide evidence of lasting injury or medical findings that independently confirmed radiation, burns, or another physical effect.[Ufologie]ufologie.patrickgross.orgUFOs at close sight: The Loch Raven Dam case, 1958…

How Project Blue Book investigated the case

The Loch Raven report entered the Air Force’s Project Blue Book system as case number 6148. Blue Book was the US Air Force investigation into UFO reports between 1952 and 1969, created to evaluate whether sightings represented a national security concern or evidence of unknown technology. The Loch Raven incident appeared among the programme’s unresolved cases.[Isaac Koi Archive]isaackoi.com19581026 loch raven dam incidentIsaac Koi Archive1958.1026 Loch Raven Dam incident | Isaac Koi Archive…

The Air Force investigation recorded the main elements of the witnesses’ story: a hovering egg-shaped object, a vehicle malfunction, a bright flash, heat sensations, and a rapid vertical departure. The surviving report did not identify a conventional cause and did not conclude that the object was extraterrestrial. Instead, it remained an “unknown” case within the Blue Book classification system.[Ufologie]ufologie.patrickgross.orgUFOs at close sight: The Loch Raven Dam case, 1958…

This distinction is important. An “unknown” classification meant investigators had not been able to match the report to an available explanation using the information they had. It did not represent official confirmation of an alien craft or proof that the reported object violated known physics. Project Blue Book’s unresolved cases included reports where available evidence was insufficient for a confident identification.[NICAP]nicap.orgComplete List of Project Blue Book's Unsolved CasesComplete List of Project Blue Book's Unsolved Cases…

Original document

What evidence supports the UFO interpretation?

Supporters of the UFO interpretation point mainly to the combination of details reported by the two witnesses:

• Two-person testimony: The event was not a single-observer sighting. Small and Cohen provided a broadly consistent account of the object, the vehicle failure, and the departure.[NICAP]nicap.orgUFO ReportUFO ReportOctober 26, 1958…Published: October 26, 1958
• Reported electromagnetic effects: The alleged failure of the car’s electrical system is one of the features that has made the case especially interesting among UFO researchers. Similar claims appear in other historical UFO reports, although they are difficult to verify without instruments or physical records.[NICAP]nicap.orgUFO ReportUFO Report…
• Contemporary investigation: The event was reported close enough in time to receive official attention rather than existing only as a later anecdote. The Project Blue Book paperwork provides a contemporary record of the claims.[Wikimedia Commons]upload.wikimedia.orgProject Blue Book report 1958 10 7201675 NOfBaltimore MdWikimedia Commons1958-10-7201675-NOfBaltimore-MdJanuary 6, 2015…Published: January 6, 2015

For UFO researchers, the combination of a close-range sighting, alleged effects on machinery, and a government investigation makes Loch Raven one of the stronger cases from the 1950s. However, “stronger” in this context refers to the quality of the report compared with many anonymous or poorly documented sightings, not to proof of an extraordinary explanation.[NICAP]nicap.orgUFO ReportUFO Report…

What remains uncertain about the incident?

The largest weakness in the case is the lack of independent evidence. There are no known photographs, instrument readings, radar confirmations, recovered materials, or environmental measurements that could test the claims. The investigation depended heavily on reconstructing what the two witnesses experienced and remembered.[Wikimedia Commons]upload.wikimedia.orgProject Blue Book report 1958 10 7201675 NOfBaltimore MdWikimedia Commons1958-10-7201675-NOfBaltimore-MdJanuary 6, 2015…Published: January 6, 2015

The car failure is also difficult to evaluate. A vehicle stopping briefly at night could have many ordinary causes, including electrical faults, ignition problems, battery issues, or driver error. The available case record does not demonstrate that the failure occurred through an external force rather than a coincidental mechanical problem. Similarly, the reported heat and skin effects are witness statements rather than medically documented evidence of a specific cause.[NICAP]nicap.orgUFO ReportUFO ReportOctober 26, 1958…Published: October 26, 1958

Another limitation is that the exact physical circumstances are not fully recoverable. Later accounts often repeat estimates of the object’s size, height, distance, and behaviour, but those measurements were based on human observation during a short, stressful nighttime event. Such estimates can be useful as testimony while still carrying uncertainty.[Ufologie]ufologie.patrickgross.orgUFOs at close sight: The Loch Raven Dam case, 1958…

Competing explanations and the unresolved status

A conventional explanation has not been firmly established, which is why the case remains popular in UFO literature. At the same time, the absence of an identified explanation does not eliminate ordinary possibilities. Researchers examining historical UFO reports often distinguish between “unexplained” and “unexplainable”: a report may remain unresolved because the available information is incomplete rather than because the event requires a new physical explanation.[NICAP]nicap.orgComplete List of Project Blue Book's Unsolved CasesComplete List of Project Blue Book's Unsolved Cases…

Possible non-extraordinary interpretations include misidentification of a conventional light source or aircraft, a coincidental vehicle malfunction, or a combination of separate events that were connected in the witnesses’ memory. The difficulty is that the short duration of the sighting and the absence of independent observations leave little evidence with which to test these possibilities.[Ufologie]ufologie.patrickgross.orgUFOs at close sight: The Loch Raven Dam case, 1958…

The extraterrestrial interpretation also faces the same evidence problem. The report describes an unusual object, but the available documentation does not provide proof of its origin, technology, or physical nature. The strongest defensible conclusion is that two witnesses reported a remarkable event that was investigated and remained unidentified in official records.[Wikimedia Commons]upload.wikimedia.orgProject Blue Book report 1958 10 7201675 NOfBaltimore MdWikimedia Commons1958-10-7201675-NOfBaltimore-MdJanuary 6, 2015…Published: January 6, 2015

Why the Loch Raven Dam case remains famous

The Loch Raven Dam incident has lasted in UFO history because it combines several elements that attract continued attention: a named location, identifiable witnesses, a contemporary government file, an alleged interaction with a vehicle, and a conclusion that stopped at “unknown.” It represents the type of case that helped shape public interest in UFO investigations during the 1950s, when reports of unusual aircraft and unexplained aerial phenomena were receiving increasing official attention.[Isaac Koi Archive]isaackoi.com19581026 loch raven dam incidentIsaac Koi Archive1958.1026 Loch Raven Dam incident | Isaac Koi Archive…

Ultimately, the case is best understood as a well-documented historical UFO report rather than a proven encounter with an extraterrestrial vehicle. The available evidence supports the fact that Small and Cohen reported a strange experience near Loch Raven Dam; it does not independently establish what the object was. The incident remains unresolved because the surviving evidence records the mystery more clearly than it resolves it.[Wikimedia Commons]upload.wikimedia.orgProject Blue Book report 1958 10 7201675 NOfBaltimore MdWikimedia Commons1958-10-7201675-NOfBaltimore-MdJanuary 6, 2015…Published: January 6, 2015

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Endnotes

1. Source: upload.wikimedia.org
Title: Project Blue Book report 1958 10 7201675 NOfBaltimore Md
Link:https://upload.wikimedia.org/wikipedia/commons/5/5d/Project_Blue_Book_report_-_1958-10-7201675-NOfBaltimore-Md.pdf

Published: January 6, 2015

2. Source: nicap.org
Title: UFO Report
Link:https://www.nicap.org/reports/581026lochravendam_report2.htm

Published: October 26, 1958

3. Source: nicap.org
Title: UFO Report
Link:https://www.nicap.org/581026lochravendam_dir.htm

4. Source: nicap.org
Title: Complete List of Project Blue Book’s Unsolved Cases
Link:https://www.nicap.org/bluebook/bluelist.htm

5. Source: nicap.org
Link:https://www.nicap.org/1958.htm

6. Source: nicap.org
Title: The Project Bluebook “Unknowns”
Link:https://www.nicap.org/bluebook/unknowns.htm

7. Source: nicap.org
Link:https://nicap.org/papers/effectsposition.htm

8. Source: guide.msa.maryland.gov
Link:https://guide.msa.maryland.gov/pages/series.aspx?id=SE64

9. Source: guide.msa.maryland.gov
Link:https://guide.msa.maryland.gov/pages/item.aspx?ID=BRG47

10. Source: guide.msa.maryland.gov
Link:https://guide.msa.maryland.gov/pages/series.aspx?ID=BRG47

11. Source: guide.msa.maryland.gov
Link:https://guide.msa.maryland.gov/pages/series.aspx?id=S1827

12. Source: guide.msa.maryland.gov
Link:https://guide.msa.maryland.gov/pages/item.aspx?ID=BRG47

13. Source: guide.msa.maryland.gov
Link:https://guide.msa.maryland.gov/pages/series.aspx?ID=BRG47-43

14. Source: guide.msa.maryland.gov
Link:https://guide.msa.maryland.gov/pages/series.aspx?ID=BRG47

15. Source: isaackoi.com
Title: 19581026 loch raven dam incident
Link:https://isaackoi.com/ufo-history/ufo/19581026-loch-raven-dam-incident/

16. Source: ufologie.patrickgross.org
Link:https://ufologie.patrickgross.org/htm/lochravendam.htm

17. Source: books.google.com
Title: The Loch Raven Incident
Link:https://books.google.com/books/about/The_Loch_Raven_Incident.html?id=yaD_0QEACAAJ

18. Source: archives.gov
Title: Project BLUE BOOK
Link:https://www.archives.gov/foia/ufos.html

19. Source: ufologie.patrickgross.org
Link:https://ufologie.patrickgross.org/htm/bluebooku58.htm

Additional References

20. Source: towsontorch.com
Title: 🛸 The Enigma of the 10/26/58 Loch Raven Reservoir UFO Sighting
Link:https://towsontorch.com/p/the-enigma-of-the-10-26-58-loch-raven-reservoir-ufo-sighting

Published: October 27, 2025

21. Source: zestythings.com
Title: The witness
Link:https://zestythings.com/ufos-loch-raven-ufo-history/

Published: December 20, 2025

22. Source: youtube.com
Link:https://www.youtube.com/watch?v=u_EPEPEzeus

23. Source: youtube.com
Title: Five Minute Histories: Loch Raven Reservoir
Link:https://www.youtube.com/watch?v=u_5NCJ9NIMs

24. Source: damsafety.org
Link:https://damsafety.org/reference/designing-and-constructing-spillway-and-stability-improvements-loch-raven-dam

25. Source: infinityexplorers.com
Link:https://www.infinityexplorers.com/loch-raven-reservoir-ufo/

26. Source: kaweah.freedombox.rocks
Link:https://kaweah.freedombox.rocks/kiwix/content/wikipedia_en_all_maxi_2023-10/A/Loch_Raven_Reservoir

27. Source: youtube.com
Link:https://www.youtube.com/watch?v=YsSYpOc777U

28. Source: uaprad.org
Link:https://uaprad.org/cases/levelland-incident-1957/

29. Source: youtube.com
Title: Loch Raven UFO Event
Link:https://www.youtube.com/watch?v=c4vQryKI0bY