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Details for Benchmark: OA0935

N 42° 11.856 W 124° 02.766 (NAD 83)

Altitude: 2685

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

Location:
In CURRY county, OR View Original Datasheet
Designation:
POLLYWOG RESET
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:

Reference Points

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Recovered the station mark, reference marks, and azimuth mark – all in good condition. The station mark was found at the adjusted coordinates.

Changes/additions to the 1942 description are as follows:
STATION MARK:
- We are unsure where “Old Ridge Trail” was. Now, Road 1909 is about 305 feet east of the station (measured using GPSr track data. Because of the extreme slope between the station and road, it was impractical to measure the distance with a tape measure.) We could not find a “27 mile sign”.

  • We found the station 18 feet west-southwest of what we estimate is the highest point in the area.

  • There were no pine trees at the 19 foot distance from the station. There were no trees within 25 feet that were old enough to have been 14-inches in diameter in 1942.

  • The station is no longer at the “edge of the trees”. There are now trees up to the summit.

  • The station mark and both reference marks are 3.5 inch diameter disks welded to 2.3 inch outside diameter pipes. The station disk and RM2 protrude 6 inches above the ground. RM1 protrudes 12 inches above the ground.

  • The station mark is 40.5 feet south-southwest of a 2.5 foot diameter tree that branches into a “U” about 15 feet above the ground.

AZIMUTH MARK:
We found the azimuth mark 4 miles from the station (at the direction given in the box score) located near the top of a section of Long Ridge. The Long Ridge Lookout buildings are gone (see our OA0936 log).

The azimuth mark is in the top of an outcropping of bedrock that protrudes about 0.5 feet above surrounding ground. The outcropping is just SE of the ridgeline and the 0.5 foot protrusion puts the height of the disk about equal with the ridge top. The exposed area of the outcropping is roughly 3.7 feet by 2.2 feet.

The azimuth mark is 2.3 feet NNW of a metal post (typical metal fence post).

The azimuth mark is 16.8 feet northeast of a 2.5 foot diameter fir tree.

Our Garmin nuvi 760 GPSr gave the location of the azimuth mark as: N 42° 14.890 W 124° 05.051 (with “14 Feet Accuracy”).

The azimuth mark has its own reference mark. At 11.8 feet exactly west (270º) of the azimuth mark there is a disk on top of the ridge. The disk is cemented in a bedrock outcropping (or buried boulder) that has an exposure area of 1.1 feet square. The disk is a U.S. Army Corps of Engineers station disk that has been pressed into service as a reference mark disk. It has an obviously hand-scribed arrow pointing towards the azimuth mark (a sideways “V” letter stamp was used for the point of the arrow).
The disk is stamped: POLLOYG A. R.M. 2 .

We searched for a RM1, but all we got for our troubles was a bad case of poison oak. (Be careful if you are nosing around northwest of the azimuth mark.)

BOX SCORE:
We found RM1 and RM2 at the locations given in the box score. Trees prevented clear lines of site to the other reference objects. Based upon calculations between GPS coordinates we know the azimuth mark was located at the direction in the box score.

NON-RELVANT INFO THAT WE WILL SHARE ANYWAY:
Pollywog Butte was part of one of the largest fires in Oregon’s recorded history - the 2002 Biscuit Fire.
We found a burnt piece of lumber protruding from the earth near the station mark. We also found 2 pole-shaped pieces of wood lying next to the station (see photo).
We also saw a pair of metallic rods (2.75 inches in length) near the station (see photo). We originally wondered if the rods were the cores from a pair of batteries. However, later measurement of batteries indicates that 2.75 inches is too long to be part of any AA to D-size battery. So… what are they?
We also saw a Taylor Magnapole Bakelite compass lying on the ground. All pieces survived except the needle (see photo). The compass had “E.M.” inscribed on the back. Poor E.M., we sympathize, we are always losing stuff in the woods.

[Photos:]
photoOA0935 - Disk -Rogue River-Siskiyou Natl. Forest
photoOA0935 – Disk - enhanced
photoOA0935 - Eye level view.
Note the 2 burnt posts. Top of photo is roughly north-northeast.
photoOA0935 - Burnt post near mark.
Burnt post west-northwest of mark is set in ground on left side of photo; Station is on right partially obscured by leaves.
photoOA0935 - Looking ENE towards highest spot.
An orange marker has been placed on top of the disk.
photoOA0935 - Looking southwest towards station.
photoOA0935 - RM1 disk
photoOA0935 - RM1 disk – with powder
photoOA0935 - Looking north at RM1
photoOA0935 - Looking approx south - RM1 to station.
RM1 is in foreground. Station is at center top of photo marked with an orange cone.
photoOA0935 - RM2 disk
photoOA0935 - RM2 Eye level view.
Top of photo is roughly east-northeast.
photoOA0935 - RM2 – looking southeast
photoOA0935 - Looking approx northwest – RM2 to station
RM2 is in foreground. Station is at top of photo marked with an orange cone.
photoOA0935 - Azimuth mark disk
photoOA0935 - Azimuth mark and post looking SSE.
photoOA0935 - Azimuth mark’s Reference Mark disk.
This is the Reference mark for OA935’s Azimuth mark.
photoOA0935 - Az. mark’s Reference Mark disk detail.
Note the hand scribing.
photoOA0935 - Eye level view of Az mark’s Ref Mark.
photoOA0935 - Azimuth Mark and its RM looking ENE.
Looking east-northeast. Yellow arrow points to the reference mark and red arrow points to witness post for the azimuth mark (in the photo, the azimuth mark is to the left of the post).
photoOA0935 – Looking WSW at azimuth mark and its RM.
The azimuth mark’s witness post is on the left with a orange cone on top. The orange ribbon near the center of the photo marks the location of the reference mark.
photoView from azimuth mark to Pollywog Butte.
Pollywog Butte is centered between the opening in the branches.
photoWhat are these?
Found lying within 2 feet of the station. Each rod(?) is 2.75 inches long.
photoCompass lying on ground.
photoMurphy helping with the search.

Documented History (by the NGS)

01/01/1913 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1913 (HAS) STATION IS ON THE HIGHEST PART OF THE WOODED BUTTE AND ABOUT 1/2 MILE S OF POLLYWOG BUTTE, ON THE RIDGE EXTENDING S FROM QUAIL PRAIRIE, AND LYING ABOUT 6 MILES W OF THE RED MOUNTAIN RANGE. THE STATION IS MARKED BY A BRONZE TABLET SET IN CONCRETE IN A DEPRESSION IN A BOULDER. A LARGE ROCK CAIRN SURROUNDS THE MARK.
01/01/1937 by USFS (MONUMENTED)
RECOVERY NOTE BY US FOREST SERVICE 1937 RECOVERED IN GOOD ORDER AND AS DESCRIBED. POLES OF OLD SIGNAL STILL IN EVIDENCE. THIS STATION IS APPROXIMATELY 300 FEET W OF THE 27-MILE MARKER ON THE U.S. FOREST SERVICE TRAIL FROM LONG RIDGE LOOKOUT TO RED MOUNTAIN.
01/01/1942 by CGS (MONUMENTED)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (JCS) THE OLD STATION MARK, DISK IN STONES CEMENTED TOGETHER, WAS RECOVERED INTACT AND REPLACED BY THE MARK DESCRIBED BELOW. TWO REFERENCE MARKS AND AN AZIMUTH MARK WERE ESTABLISHED. STATION IS LOCATED BY AIRLINE DISTANCES ABOUT 16 MILES NE OF BROOKINGS, 25 MILES SE OF GOLD BEACH, AND ABOUT 4 MILES SE OF THE FOREST SERVICE LONG RIDGE LOOKOUT. ON A WOODED BUTTE, ON THE RIDGE EXTENDING S FROM QUAIL PRAIRIE, ABOUT 1/2 MILE S OF POLLYWOG BUTTE, AND 300 FEET W OF THE FOREST SERVICE 27-MILE SIGN ON THE OLD RIDGE TRAIL FROM LONG RIDGE TO RED MOUNTAIN. STATION IS ABOUT 10 FEET W OF THE HIGHEST POINT, 19 FEET W OF A 14-INCH PINE BEARING A TRIANGULAR BLAZE, AT THE EDGE OF THE TREES. STATION MARK IS A BRONZE STATION DISK, STAMPED POLLYWOG 1913, WELDED TO A 3-INCH IRON PIPE WHICH PROJECTS ABOUT 6 INCHES ABOVE THE GROUND. REFERENCE MARK 1 IS A BRONZE REFERENCE DISK, STAMPED POLLYWOG NO 1 1942, WELDED TO A 3-INCH IRON PIPE WHICH PROJECTS 9 INCHES. REFERENCE MARK 2 IS A BRONZE REFERENCE DISK, STAMPED POLLYWOG NO 2 1942, WELDED TO A 3-INCH IRON PIPE WHICH PROJECTS 8 INCHES. AZIMUTH MARK IS NW OF THE STATION, ABOUT 150 FEET E OF THE LONG RIDGE LOOKOUT HOUSE, 55 FEET E OF THE E SIDE OF THE LOOKOUTS DWELLING HOUSE, AND 5 FEET N OF RANGE WITH THE S SIDE OF THE DWELLING. MARKED BY A BRONZE AZIMUTH DISK, STAMPED POLLYWOG 1942, CEMENTED IN A DRILL HOLE IN OUTCROPPING BEDROCK. TO REACH FROM BROOKINGS, TURN N OFF U.S. HIGHWAY 101 ON PAVED ROAD 0.1 MILE. TAKE RIGHT TURN (PAVED) 0.4 MILE TO A FORKS. LEFT FORK HERE ENTERS THE AZALEA STATE PARK. TAKE RIGHT FORK 0.2 MILE TO END OF PAVEMENT, THEN FOLLOW THIS GRADED ROAD (CHETCO RIVER ROAD) NE 4.9 MILES TO A FORKS, TAKE LEFT FORK FOR 1.8 MILES AND AGAIN TAKE LEFT FORK AT SIGN LONG RIDGE L.O. 16. FOLLOW THIS LONG RIDGE ROAD (OR CHETCO RIVER ROAD) 5.1 MILES TO A FORKS, TAKE RIGHT FORK 2.4 MILES TO A ROAD RIGHT TO PAYNE RANCH. KEEP LEFT FORK HERE, MAIN ROAD, 2.0 MILES AND CROSS THE CHETCO RIVER. CONTINUE 0.2 MILE AND TAKE RIGHT FORK, MAIN TRAVELED ROAD, 2.3 MILES TO A GATE AND BARN AT THE LONG RIDGE RANCH. PASS THROUGH THIS GATE AND CONTINUE, PASSING THROUGH TWO MORE GATES, 3.6 MILES TO A FORKS, TAKE LEFT FORK TOWARD LOOKOUT 0.2 MILE TO A FORK ABOUT 0.1 MILE BELOW LOOKOUT. HERE TAKE RIGHT FORK 0.3 MILE. AGAIN TAKE RIGHT FORK AND GO 1.7 MILES TO END OF ROAD, WHERE A NARROW ROAD BEGINS. TRAVEL BY VERY SMALL CAR MAY BE ACCOMPLISHED ALONG THIS NARROW ROAD. FOLLOW THIS ROAD 5.2 MILES TO A HITCHING RACK ON THE RIGHT. FROM THE S END OF THIS HITCHING RACK GO S 25 YARDS TO AN ARROW AND TRIANGULAR BLAZE ON TREE, WHERE A TRAIL LEADS RIGHT FROM ROAD. TAKE THIS TRAIL ABOUT 150 YARDS TO THE FOREST SERVICE 27-MILE SIGN ON LEFT OF TWO LARGE TREES, AND A TRIANGLE AND AN ARROW ON THE RIGHT TREE. TURN RIGHT AND GO UPHILL ABOUT 75 YARDS TO THE HIGHEST POINT AND THE STATION.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in October 1991.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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