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Details for Benchmark: AE6473

N 40° 05.292 W 105° 11.412 (NAD 83)

Altitude: 5155

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

Location:
In BOULDER county, CO View Original Datasheet
Designation:
C119 MP49.50
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:
May hold, but of type commonly subject to surface motion.

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Part of a multi. Easy find.

Found while geocaching.

The benchmark looks fine. Found while geocaching.

found while doing a muti near by

Got it! 1st benchmark! Quick drive-by. Didn't catch the official geocache, will do later. Thx!

Woohoo a benchmark and a smiley.

Found this as part of a multi caching day. It's always nice to get a twofer! Cache and benchmark. Yea!

Nice! Nice and cold out that is! Found it quickly...odd place for a benchmark but I'll take it!

Found the benchmark while finding the associated cache.

found. lots of room to park on the side of 52.

My first benchmark logged

Quick find right at the Coordinates.

I found it while geocaching.

[Photos:]
photoThe Benchmark

Found this today as part of TwoC's Benchcaching cache.

Thanks

found this and a cache.

Found while geocaching!!:)

Found while geocaching.

[Photos:]
photoAE6473

Love finding benchmarks! Part of NY Nomads. Chickenelbows

All good with the mark. Sturdy, readable. Captain Jon Iroquois Sail and Power Squadron, Rochester, NY

Found this while geocaching.

Marker in good shape

Last April when I looked for this Benchmark the first time it was covered by about 2 feet of weeds and I did not find it. Today I walked up and there is was clearly visible.

FOund with cache and animjason

Found with geocache with sissadies

made a quick stop at lunch!

Found with nearby geocache.

Benchmark in good shape

[Photos:]
photoAE6473

Still in good shape and I found it while geocaching.

[Photos:]
photoAugust 01, 2014

Found this - my first benchmark!

Found in good shape while geocaching nearby.

[Photos:]
photobenchmark

Found it when the area.

Found in good shape--

[Photos:]
photoAE6473. C119 M49.50

Found with Memfis Mafia and Mud Dancer while doing the nearby cache.

Found with team kaiketsu and Memfis Mafia while doing nearby geocache.

Found quickly after finding the nearby geocache. I love benchmarks and geocaches when they are this close.

[center]
[b]Memfis Mafia[/b]
"Get out and Play"
1 (818) 8ME-MFIS
Visit our family blog at [url=http://memfismafia.wordpress.com]MemfisMafia.com[/url].
You can also find us on [url=https://www.facebook.com/MemfisMafia]Facebook[/url], [url=https://twitter.com/Memfis_Mafia]twitter[/url], [url=https://www.youtube.com/channel/UC3DfarWahnD9MLN5VE3u6qg]youtube[/url], and [url=http://instagram.com/memfismafia]Instagram[/url].

[/center]

Benchmark in good shape and visible.

found this mark on our trip to co for a month.

I was able to find the benchmark after moving a little dirt.

Found with nearby geocache.

Found with nearby cache.

Haven't logged benchcaches before and didn't think I'd bother, but now I see that there's an advantage to having logged some--at least one multi requiring a certain number of benchcaching finds. So, since I found this one along with the associated cache on July 2 (actually found it before the traditional cache), I'm logging it to get credit. Now I'll have to start logging more of these when I find them.

found this benchmark. I forget about these.

Cool

Never knew about these until a multi cache! Fun to find!

got the second half tftc

Was in the area geocaching and found this great benchmark.

[Photos:]
photoDCIM2[N4008819W10519021T3EAAAF7BH0628C6]

I saw this while geocaching.

First Benchmark find in CO.
Very good condition

Hey, our first benchmark.
Thanks and greetings from Germany, junimond

Thanks. No problem.

We always enjoy finding a benchmark.
Thanks!

Found this along with -TwoC's- Benchmarking Multi Cache

Found while geocaching.

Found while geocaching.

I was scanning the grass around the witness post when I suddenly realized that my right foot was on a rather roundish rock. Doh!

Logged the cache, too.

Found the cache first, then came over and located the benchmark. Coordinates spot on for both of them.

Found the BM, not the cache.

quick find, thanks!

Quick find.

Had to kick the dirt off it, but did find it!

My first benchmark in Boulder.

Found while caching in the area.
Good condition

Found the benchmark no problem, under plastic tarp, we exposed it a bit. Then a train came by and my boys were scared to death. We huddled closed until train and tears passed. Headed over to locate cache in a safer location, but did not find it. Little agent found another benchmark close to cache location. Atlas had to give up the search with promise of ice cream for bravery. Feel like bad geo mom...would not bring kids to this one if had to do it over. Eight year old loved it, five and under beware...thanks for the thrill...

quick find

It was a bit hidden by some plastic sheeting, but did find it!

Found this benchmark in conjunction with pursuing the multi-cache.

Benchmark is about an inch below the ground level, but perfectly visible. Took a photo. Thanks!

Covered with debris but its location is obvious. Bob

Spied it while caching.

Saw this one while logging the nearby geocache. Still in good shape!

Found while geocaching... still there.

Took me a minute to spot it, then realized that any idiot could spot this one from the air!

It's still there!

Found while caching.

Expected this one to be a little more stable. Looks to be in good condition.

Found while caching.

Stopped while geocaching.

found while geocaching. craftsman

Found while caching.

My first Benchmark find

Got it!

Found this witness post today on private property (40 05.293, 105 11.412). Also found 2 benchmark disks on the ground nearby: 40 05.296, 105 11.381 and 40 05.289, 105 11.373).

Found while placing a -TwoCs- Benchcaching cache nearby.

Found after work.

Given coords right on (6 feet +/- 10).

[Photos:]
photodes
looking NE
photodes
witness post
photodes
closeup

OK, we went back and Im positive I was standing on it last time. This time found it.
Metal disc in the dirt / weeds and like the previous person said its about 6 from the fence now. The fiberglass stake is just on the other side of the fence from it.
ibid.


original post:
Well, the weeds have grown up and I didnt find the actual BM. I did find a 3+' tall fiberglass marker indicating that it was a survey marker. that was on the SE side of the fence. I will have to go back and look some more.

[last edit: 6/17/2003 5:31:23 PM PST]

[last edit: 6/17/2003 5:31:41 PM PST]

N 40° 05.292 W 105° 11.415

Found benchmark, with one change to description. Now, only 6 inches Northwest of fence. All other descriptions match.

Documented History (by the NGS)

01/01/1993 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1993 (RSC) THE STATION IS LOCATED ABOUT 8 MI (12.9 KM) NORTHEAST OF BOULDER, 8 MI (12.9 KM) SOUTHWEST OF LONGMONT AND ACROSS THE ROAD FROM THE ENTRANCE TO THE IBM PLANT, IN THE SOUTHEAST 1/4 OF SECTION 35, T 2 N, R 70 W, AT STATE HIGHWAY 119 MILEPOST 49.50. OWNERSHIP--COLORADO DEPT. OF TRANSPORTATION RIGHT-OF-WAY TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 119 AND STATE HIGHWAY 52, NORTHEAST OF BOULDER, GO SOUTHEAST ON STATE HIGHWAY 52 FOR 0.05 MI (0.08 KM) TO THE STATION ON THE RIGHT THE STATION IS A STANDARD COLORADO DEPT. OF HIGHWAYS CONTROL DISK SET ON A SHALLOW DEPTH ROD FLUSH WITH THE GROUND. IT IS 51.2 M (168.0 FT) SOUTHWEST OF THE CENTER LINE OF STATE HIGHWAY 52, 50.8 M (166.7 FT) SOUTHEAST OF THE CENTER OF THE NORTHEAST BOUND LANE OF STATE HIGHWAY 119, 12.0 M (39.4 FT) SOUTHEAST OF THE CENTER OF THE RAILROAD TRACKS, 3.2 M (10.5 FT) WEST-NORTHWEST OF A RIGHT-OF-WAY FENCE, 0.5 M (1.6 FT) WEST-NORTHWEST OF A WITNESS POST, IN THE SOUTHEAST CORNER OF THE INTERSECTION AND ABOUT LEVEL WITH BOTH HIGHWAYS.

Control Text

  • The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in February 1998.
  • The orthometric height was determined by GPS observations and a high-resolution geoid model.
  • 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.

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