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Details for Benchmark: KS1433

N 39° 03.676 W 120° 06.820 (NAD 83)

Altitude: 6230.1

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

Location:
In EL DORADO county, CA View Original Datasheet
Designation:
BEACON
Marker Type:
survey disk
Setting:
setting not listed - see description
Stability:

Reference Points

Must Read!

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Found it.

What a great day for caching even snag a benchmark wow

This was a really fun one, my first underwater station mark find. We came in on Jet skis but couldn't spot any of the marks while anchoring since we were North of the mark. We found the cache and then found RM1 easily on the beacon piling. We followed the direction of the arrow and waded out and found RM2 about 6 inches underwater. Then followed that arrow out and found the station mark. Then searched some more and found RM3 off to the South. All marks except RM1 were underwater today.

[Photos:]
photoKS1433
photoRM1
photoRM2
photoRM3
photoView from Station Mark towards Nav Marker
photoView from RM3 towards Station Mark

We were out kayaking on a nice April day, due to a short winter. As we passed by the lighthouse, H saw it in the water. We circled around to check it out. Totally unexpected find.

This is our first benchmark log! We seen hundreds of them in our travels, but just haven't logged any.

BEACON RM - 1 is at N39 03.673 W120 06.839.

I'm marking this as a find as are those below, but the mark that is ON the lighthouse pier is NOT the mark referenced, "BEACON".

The mark that is on the lighthouse pier is as described, "REFERENCE MARK NO. 1 IS A STANDARD CSLC BRASS DISK STAMPED BEACON RM - 1, 1979 SET IN THE TOP OF THE SOUTHEAST PIER OF THE SUGAR PINE POINT LIGHTHOUSE".

I know it's been said before but I thought I would also clarify.

Also, the first 'finder' found RM 2, as shown in his pic.

Couldn't get a pic of the disk as we swam in from about 100 feet out.

Found while locating cache at light house. Our first Benchmark! Now we want to find more!

Bezekira asked if this was a real benchmark, I looked at and figured it's "Beacon" designation from the CA Land Commission made that a big "no". She proved me wrong! It's on the SE pilon of the beacon. Next group out should get a photo of it!

Found this while searching for "The World's Highest Working Lighthouse" cache. It is the first reference mark described as "REFERENCE MARK NO. 1 IS A STANDARD CSLC BRASS DISK STAMPED BEACON RM - 1, 1979 SET IN THE TOP OF THE SOUTHEAST PIER OF THE SUGAR PINE POINT LIGHTHOUSE."

I can't beleive that no one has logged this yet!
We were doing the "World's Highest Lighthouse" cache and I was walking out to set up for a picture. Twenty feet in front of the cache I see the marker.
Don't people up here look for benchmarks?
Happy we found it!

Thefogheads

[Photos:]
photoKS1433 and Foghead

Documented History (by the NGS)

01/01/1979 by CASLC (MONUMENTED)
DESCRIBED BY CALIFORNIA STATE LANDS COMMISSION 1979 ON THE WESTERN SHORE OF LAKE TAHOE BETWEEN TAHOMA AND MEEKS BAY, IN THE EDWIN L. ZBERG NATURAL PRESERVE (SUGAR PINE POINT STATE PARK) AT THE SUGAR PINE POINT LIGHTHOUSE. TO REACH THE STATION FROM THE INTERSECTION OF PINE STREET AND RTE 89 (WEST LAKE BLVD) IN TAHOMA, PROCEED SOUTH ON RTE 89, 1.3 MILES TO A STATE PARK FOREST SERVICE ROAD ON THE LEFT IN SUGAR PINE POINT STATE PARK. TURN LEFT, (EAST), ONTO SAID ROAD AND WIND 0.3 MILES TO THE WATER TANK HOUSE AND GENERATING PLANT AND END OF TRUCK TRAVEL AT THE EHRMAN MANSION. PACK NORTHERLY ALONG THE EDWARD F. DOLDER NATURE TRAIL IN THE EDWIN L. ZBERG NATURAL PRESERVE 0.8 MILES TO THE SUGAR PINE POINT LIGHTHOUSE AND THE STATION SITE, A 30 MINUTE PACK. THE STATION IS MARKED BY A STANDARD CSLC BRASS DISK STAMPED CSLC BEACON, 1979 AND IS SET FLUSH IN THE HIGHEST PART OF A 5 FEET X 8 FEET X 3 FEET TALL GRANITE BOULDER. THE BOULDER TOP IS 2 FEET ABOVE THE WATER SURFACE THIS DATE (26 JULY 79) AND IS SUBJECT TO INUNDATION BY THE LAKE DURING SPRING AND EARLY SUMMER MONTHS. REFERENCE MARK NO. 1 IS A STANDARD CSLC BRASS DISK STAMPED BEACON RM - 1, 1979 SET IN THE TOP OF THE SOUTHEAST PIER OF THE SUGAR PINE POINT LIGHTHOUSE. REFERENCE MARK NO. 2 IS A STANDARD CSLC BRASS DISK STAMPED BEACON RM - 2, 1979 SET IN THE TOP OF A LARGE SUBSURFACE BOULDER, 1 FOOT ABOVE THE WATER SURFACE THIS DATE (26 JULY 1979). REFERENCE MARK NO. 3 IS A STANDARD CSLC BRASS DISK STAMPED BEACON RM - 3, 1979 SET IN THE TOP OF THE MOST WESTERLY AND THE LARGER OF TWO BOULDERS. THE SUBJECT BOULDER IS 5 FEET X 5 FEET AND STANDS 3 FEET ABOVE THE WATER SURFACE THIS DATE (26 JULY 1979). BOAT ACCESS IS POSSIBLE, HOWEVER EXTREME CARE MUST BE EXERCISED WHEN APPROACHING THE AREA DUE TO SHALLOW - ROCKY CONDITIONS.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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