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Details for Benchmark: OA0936

N 42° 14.870 W 124° 05.091 (NAD 83)

Altitude: 0

Coordinates may not be exact. Altitude is UNKNOWN and location is ADJUSTED. (more info)

Location:
In CURRY county, OR View Original Datasheet
Designation:
LONG RIDGE LOOKOUT TOWER
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:

Must Read!

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We are hesitant to claim a mark as destroyed. However, we feel confident that Long Ridge Lookout Tower can be classified as destroyed for the following reasons:

1) We went to the adjusted coordinates and there are no buildings anywhere in the area (see photos below). The adjusted coordinates are at the highest point of a ridge that would seem to be a very suitable location for a lookout.

2) From the 1942 description for triangulation station OA0935 (POLLYWOG RESET) there is a discussion of the azimuth mark for POLLYWOG RESET, and it states:

“AZIMUTH MARK [for Pollywog Reset] IS… ABOUT 150 FEET E OF THE LONG RIDGE LOOKOUT HOUSE, 55 FEET E OF THE E SIDE OF THE LOOKOUT’S DWELLING HOUSE, AND 5 FEET N OF RANGE WITH THE S SIDE OF THE DWELLING.”

We found the azimuth mark for Pollywog Reset and there are no longer any buildings within 55 to 150 feet east of the azimuth mark (in fact there are no buildings anywhere in the vicinity).

3) The Long Ridge Lookout locations per items 1 and 2 above are corroborated by a 1954 map of the area* that shows a lookout and another building at the general area of the adjusted coordinates that are oriented per the Pollywog Reset Azimuth Mark description.

  • The map we referenced was the “Mt. Emily, Oregon” quadrangle map published by the USGS in 1954.

4) At a nearby lookout tower (Quail Prairie) we found a Forest Service sign discussing the demise of the Long Ridge Lookout tower in 1962 (see photo of sign below).

The Long RIdge Lookout appears to have been one of the early ones in the area. Forest Service information discusses its existence as least as early as 1914.

[Photos:]
photoOA0936 - Location – Wide View.
The photo is looking West by North (281º) at the part of Long Ridge in question. The yellow bracket shows the location of the former lookout as given by the adjusted coordinates and the description for OA0935’s Azimuth Mark.
photoOA0936 – Location of adjusted coordinates.
The yellow circle indicates the location of the adjusted coordinates. The photo is taken from on top of the ridge looking west-southwest.
photoOA0936 - Info on OA0936's demise.
A Forest Service sign at the nearby Quail Prairie lookout tower.

Documented History (by the NGS)

01/01/1942 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1942 (EHB) THE LONG RIDGE LOOKOUT HOUSE IS A U.S. FOREST SERVICE LOOKOUT LOCATED ABOUT 22 MILES SE OF GOLD BEACH ON A LOW, LONG, PROMINENT RIDGE WHICH IS KNOWN AS LONG RIDGE. THERE ARE SEVERAL BUILDING ABOUT THE LOOKOUT HOUSE. THE CENTER OF THE HOUSE WAS USED.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in October 1991.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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