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Details for Benchmark: DC0894

N 32° 43.283 W 117° 10.317 (NAD 83)

Altitude: 20.24

Coordinates may not be exact. Altitude is READJUSTED and location is SCALED. (more info)

Location:
In SAN DIEGO county, CA View Original Datasheet
Designation:
H 1
Marker Type:
survey disk
Setting:
massive structures with deep foundations
Stability:
Most reliable and expected to hold position/elevation well.

Must Read!

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I was geocaching in the area and thought there may be a benchmark on this building. I enjoy locating benchmarks and have never seen a building with this many. I located all 15 benchmarks on this building. It's interesting that there is not an H4, but I don't see any history of one. All were in good condition, with some having paint covering part of the mark.

[Photos:]
photoH1 - Closeup
photoH1 - Area View
photoBenchmark Locations
photoSan Diego City & County Administration

During our trip to the US I found out more about benchmarks. I tried to find as many as possible which turned out to be tricky.
This benchmark was in perfect condition.

Tipapignola and I circled the entire building and could spot most of the benchmarks, including this one.

Not many people around so I had time for search for the Benchmark.

[Photos:]
photo

Finally got back over here (with FlagMan) to find BMs missed when the building was under construction. Disk appears to be in fair-to-good condition.

[Photos:]
photoDC0894

Finding benchmarks here is like shooting fish in a barrel. My guess is this building was the epicenter of a lot of mapping in the area.

[Photos:]
photoDC0894_H1

Just like Hoover Dam, this place is a benchmark wonderland!! No coords needed, all were easy to spot. I grabbed 15 marks in a ten minute walk around. Most in very good shape.

[Photos:]
photoH 1

In town from Denton, Texas, visiting family. Took the kids to the new park here and went a little crazy discovering and photographing all of the benchmarks surrounding the county building!

[Photos:]
photoDC0894 ~H1

Found: Good. Construction will make it difficult to get to all of the BM's, but there is access to this one and a few others. I will just have to go back to log the rest after construction is completed. Being a Government job, I'm guessing that I and other Benchmarkers should not hold our breaths.

Seeking benchmarks after jury duty. Construction at both the north and south ends of the building prevented me from logging several more. Found this one in fair condition.

[Photos:]
photoDC0894 (H1)

Came here today along with fisnjack and dillweed with the express purpose of finding the benchmarks on this building. Due to construction areas being closed off to the public, we were only able to discover 7 of them. This was one.

[Photos:]
photoH1

Found along with Dillweed and Ragfoot. Hard with all the construction going on.

I found it on a nice Sunday morning while out with friends.

[Photos:]
photoIMG_1196

Decided to walk around town after jury duty, I had loooked up nearby BM's while waiting.
Good to get out and get some exercise on this beautiful day.

I needed to kill time before my flight and what better way than benchmarks... This is a beautiful building - saw 2 weddings, a Sailor and a Marine!!! I love San Diego and hope to get back soon..

Located as described

[Photos:]
photoDC0894 / H1 / 1938
Another one above basement windows

8th of 15 found on this building.

[Photos:]
photoBM DC0894

Found with my girls, we did a quick run around the building, we missed several... we'll just have to come back.

D!

[Photos:]
photoH 1

On my trip to San Diego I did the first steps in Benchmarking! Found this one easily!

[Photos:]
photoH1

Found as described in good condition.

[Photos:]
photoMark

Still there!

[Photos:]
photoPic of the Disk
Couldn't get much closer...Pic taken 10-25-09

Yup, right where it should be.

N 32° 43.291 W 117° 10.291

Found this entire set while benchmarking with sdstickman. If H4 exists, it is underneath ramp east of stairway entrance to the south side of the building. Nice easy starter set for newbies. Alternative designation for set: COUNTYMOUNTIE01 thru COUNTYMOUNTIE16.

[Photos:]
photoDC0894, San Diego, CA

This one was clear to see, but I think I may have attracted the eye of a curious security guard!

Found it.

[Photos:]
photoH 1

Got this on on the Way to Doing the Star of India cache

Looks like the paint has been cleaned off, easy to see but behind some bushes.

Located 1000.

Benchmark has been painted over, making it unreadable. It is however in the location described.

Close enough from the orginal description to find it.

Documented History (by the NGS)

01/01/1938 by USGS (MONUMENTED)
01/01/1955 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1955 AT SAN DIEGO. AT SAN DIEGO, AT THE CIVIC CENTER, SET VERTICALLY IN THE NORTH CONCRETE FACE OF THE SOUTHEAST WING, DIRECTLY OVER A BASEMENT WINDOW, 24.0 FEET WEST OF THE NORTHEAST CORNER OF THE SOUTHEAST WING, 1.1 FEET ABOVE THE WINDOW OPENING, AND ABOUT 3 FEET HIGHER THAN THE SIDEWALK.
01/01/1967 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1967 RECOVERED IN GOOD CONDITION.
01/01/1978 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 RECOVERED IN GOOD CONDITION.
01/01/1987 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 RECOVERED IN GOOD CONDITION.
01/01/1988 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1988 (JBC) RECOVERED IN GOOD CONDITION.
01/01/1989 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1989 (GG) RECOVERED IN GOOD CONDITION.
12/06/1997 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1997 RECOVERED IN GOOD CONDITION.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in February 1993. * This is a READJUSTED BENCH MARK height. Code F indicates a distribution rate greater than 8.0 mm/km. The height was derived from older observations constrained to new heights in a crustal motion area. The height is approximate in relation to other heights in its vicinity.
  • The geoid height was determined by GEOID99.
  • The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (G = 980.6199 gals.).
  • The modeled gravity was interpolated from observed gravity values.

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