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Details for Benchmark: SX1409

N 47° 29.286 W 121° 56.818 (NAD 83)

Altitude: 3004

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

Location:
In KING county, WA View Original Datasheet
Designation:
TIGER MTN
Marker Type:
horizontal control disk
Setting:
set into the top of a round concrete monument
Stability:
Most reliable and expected to hold position/elevation well.

Reference Points

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Found while hiking with type2bil and Ozimandias and friends.

Found while out hiking with friends on this gorgeous day. The reference poles made it easy to locate.

[Photos:]
photo
photo

I’m logging my first benchmark with the help of friends.

[Photos:]
photo

Hwy88 uncovered the disc for me as DadwithTools, Hwy88 and I hiked up to this summit. Surprised that it's labeled as a horizontal disc when the center of it has the triangle on it like a station mark. Disc is in fair shape.

[Photos:]
photoBM SX1409/ TIGER MTN close up
photoBM SX1409/ TIGER MTN eye level
photoBM SX1409/ TIGER MTN approaching

Helps for the benchmark to be clearly marked with orange stakes :)

[Photos:]
photoSX1409

Thanks, apparently, to the previous finder, this was very easy to spot. Cleared off a few leaves, but this is in great shape.

I had to dig quite a bit to uncover this one. It makes me wonder.

[Photos:]
photoTIGER MTN, SX1409, 1, 20140305, CCC
photoTIGER MTN, SX1409, 1, 20140305
photoTIGER MTN, SX1409, 2, 20140305

Saw the marker and sure enough, a BM!

Found while hiking and caching, the markers gave it away ;)
Didnt even think to check on the lists before heading out there, but was happy to find it.
In good repair, no trees directly around it any longer.

Attatched are a few pictures

[Photos:]
photogps with the marker
GPS laying next to the marker
photoclose up of gps with marker
Close up view of my GPS with the tiger mountain marker.

If finding all benchmarks were this easy, it wouldn't be fun ;-) Still two posts on either side of the disc.

Saw the markers / signs around it and went over to investigate. The benchmark looks as a previous finders photo but the nearby trees have been cut down.

[Photos:]
photoTrees have been cut down nearby

Beautiful day, perfect view of Rainier. Benchmark surrounded by survey markers, hard to miss. Picture taken and will be downloaded to his post. Marker appears in good shape.
Found this while on a solo hike late in the day. On the way back out, was tracked/followed by a cougar! Grew up in rural Idaho/Montana, saw them constantly, and this was DEFINITELY a coug. Watch your back if doing a solo hike in this area.

[Photos:]
photoTGR Benchmark
photoSurvey markers

Went to investigate the posts while up here and found the benchmark. It was pouring rain so I didn't get my camera out.

Found it, the bright orange survey markers mad it a little easier, although it was covered pretty well with grass when I found it.

[Photos:]
photoIMG_1669.jpg

Climbed to the top of East Tiger Mtn and found the benchmark.

[Photos:]
photoSX1409

Had to clear away the matted grasses and other material to find it. Left my digital camera at home so I don't have a picture this time.

The three witness posts made this an EZ find. Fog obscured the views, though. Sigh.

[Photos:]
photoSX1409, Tiger Mtn WA
N 47° 29.287 W 121° 56.820

This benchmark was recovered in good condition today as described. Excellent views of Mt. Rainier are available through the nearby break in the trees.

[Photos:]
photoA closeup of the benchmark
photoA view of the immediate area around the benchmark
The posts set up on opposite sides of the marker to aid in location are clearly visible here.
photoAnother shot of the area around the marker
Stepping back a little further to show more of the area...
photoThe benchmark area and Mt. Rainier
photoMt. Rainier
Seen through a break in the trees near the marker

Documented History (by the NGS)

01/01/1973 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1973 (JLC) TOO MUCH DIFFERENCE IN ELEVATION TO MEASURE BETWEEN REFERENCE MARKS. THE STATION IS LOCATED ABOUT 7-1/2 MILES WEST OF NORTH BEND, 5 MILES SOUTHEAST OF ISSAQUAH ON THE HIGHEST POINT OF WHAT IS KNOWN LOCALLY AS TIGER MOUNTAIN. IT IS ON PROPERTY OF THE DEPARTMENT OF NATURAL RESOURCES OF THE STATE OF WASHINGTON. THERE IS A BURLINGTON NORTHERN RAILROAD MICROWAVE TOWER ABOUT 300 FEET NORTH OF THE STATION, HOWEVER, IT COULD NOT BE MEASURED TO BECAUSE OF SOME TREES. THE ENUMCLAW OFFICE OF THE DEPARTMENT OF NATURAL RESOURCES AND MR. JERRY PRICE OF THE BURLINGTON NORTHERN RAILROAD COMMUNICATION DIVISION GAVE THEIR PERMISSION FOR THE STATION. IT IS IN THE SW 1/4 SEC 8, T 23 N, R 4 E., AND AT THE SOUTH EDGE OF THE TOP OF THE MOUNTAIN. TO REACH THE STATION FROM THE FIRE STATION IN MAPLE VALLEY, GO NORTH THEN EAST ON SE 216 ST FOR 1.1 MILES TO A CROSSROAD. TURN LEFT AND GO NORTH 244 AVE SE FOR 0.5 MILE TO STATE HIGHWAY 18. TURN RIGHT AND GO NORTHEAST ON STATE HIGHWAY 18 FOR 5.7 MILES TO A GRAVEL ROAD ON THE LEFT AT THE TOP OF A LONG GRADE. TURN LEFT AND GO NORTHERLY ON THE GRAVEL ROAD FOR 1.9 MILES TO REFERENCE MARK 3 ON THE RIGHT. CONTINUE FOR 0.8 MILE TO A T-ROAD. TURN RIGHT AND GO EASTERLY FOR 0.5 MILE TO A REVERSE FORK LEFT. TURN SHARP LEFT AND GO WESTERLY FOR 0.7 MILE TO THE TOP OF THE MOUNTAIN AND THE STATION ON THE RIGHT. THE STATION MARK IS A STANDARD DISK STAMPED TIGER MTN 1973. IT IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT WHICH PROJECTS ABOUT 1 INCH. IT IS 24.7 FEET SOUTHEAST OF THE APPROXIMATE CENTER OF THE GRAVEL ROAD AND 4.4 FEET NORTH OF A WITNESS POST. THE UNDERGROUND MARK IS SET 36 INCHES BELOW THE GROUND SURFACE. REFERENCE MARK 1 IS A STANDARD DISK STAMPED TIGER MTN NO 1 1973. IT IS CEMENTED IN A DRILL HOLE IN THE CONCRETE BASE OF THE SOUTHEAST LEG OF A LOOKOUT TOWER WHICH HAS BEEN DESTROYED. IT IS 94.4 FEET NORTH-NORTHWEST OF A WITNESS POST WHICH IS LOCATED NEAR REFERENCE MARK 2, 58.9 FEET NORTH OF A WITNESS POST WHICH IS NEAR THE STATION AND 30.0 FEET NORTHWEST OF THE APPROXIMATE CENTER OF THE GRAVEL ROAD. REFERENCE MARK 2 IS A STANDARD DISK STAMPED TIGER MTN NO 2 1973. IT IS SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT WHICH PROJECTS ABOUT 6 INCHES. IT IS 67.3 FEET EAST OF A WITNESS POST, 63 FEET SOUTHEAST OF THE APPROXIMATE CENTER OF THE GRAVEL ROAD AND 5.5 FEET NORTH OF A WITNESS POST. REFERENCE MARK 3 IS A STANDARD DISK STAMPED TIGER MTN NO 3 1973. IT IS CEMENTED IN A DRILL HOLE IN A BOULDER WHICH IS ABOUT 2 FEET ABOVE THE SURFACE OF THE ROAD. IT IS 11.5 FEET EAST OF WITNESS POST. HEIGHT OF LIGHT ABOVE STATION MARK 22.1 METERS.
01/01/1973 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 RECOVERED IN GOOD CONDITION.
01/01/1974 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (RBM) THE STATION AND REFERENCE MARKS WERE RECOVERED IN GOOD CONDITION AS DESCRIBED. THE STATION HAS A GOOD VIEW TO THE WEST FROM A NORMAL INSTRUMENT SETUP. AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 5 MILES SE OF ISSAQUAH.
05/22/1989 by EVANS (GOOD)
RECOVERY NOTE BY DAVID EVANS + ASSOC 1989 RECOVERED IN GOOD CONDITION.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in December 1991.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
  • The X, Y, and Z were computed from the position and the ellipsoidal ht.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The ellipsoidal height was determined by GPS observations and is referenced to NAD 83.
  • The geoid height was determined by GEOID99.