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Details for Benchmark: GR1863

N 36° 00.999 W 114° 44.283 (NAD 83)

Altitude: 1234.8

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

Location:
In CLARK county, NV View Original Datasheet
Designation:
A
Marker Type:
triangulation station disk
Setting:
setting not listed - see description
Stability:
Mark of questionable or unknown stability.

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While doing our roadtrip, I didn't think of the benchmarks. I found at least a cache a day, but about benchmarking I was just remembered as soon as I walked this dam. They are everywhere. So when I saw them I took z photo, and now I try to log them.

[Photos:]
photoA

Since I was traveling from California to Utah alone today, I decided to add a number of hours to the trip and visit the dam. I enjoyed it and I was able to find a few geocaches and benchmarks along the way.

Duplicate BM. I found this one while walking the dam and could have sworn I had a photo of this. But when I got home, I couldn't find my photo. I know for certain that I found this one.

Touring the bridge and dam today and then using www.findbenchmarks.com to find a ton of marks on the dam. I wish I could have had a few more and I would have pulled off a really easy 25 BM day! Oh well.

This appears to be a duplicate of GR0581. I found it in okay shape. The A is starting to fade pretty good, but you can still barely see it and the description is good for its location. See my photos in my GR0581 Log.

Found while visiting Hoover Dam.

On of the few benchmarks which we found during our holiday, this one at the impressive Hoover Dam. It's really hard to recognize which benchmark it is. Greetings from Germany, Dresden, Sushisun

[Photos:]
photoBenchmark Hoover Dam

Found while doing some geocaching while on a road trip/camping vacation with my family. On the sidewalk as you cross the dam.

found it while on vacation.

It took quite a while to identify exactly which benchmark I found, but this is it!
I guess I missed all the others ...

[Photos:]
photoThe mark
photoEye level surrounds

Visting Hoover with LincolnsAunt and Dirkster.
Graded many of the nearby bench marks

Found as described

[Photos:]
photo

Found while visiting the site.

[Photos:]
photoBM at site

My only benchmark this trip - thanks from Australia ??

I was in Vegas for a long weekend and spent the morning at Hoover Dam, grabbing the new virtual and searching for benchmarks, before heading to the airport for my redeye home. I was here five years ago and noticed they are all over the place, so why not log them. Spotted this one in good shape.

Found

With Jeepers-GasFree

Joyful Noise and I were on Vacation from Michigan (Brrr. and double Brrr). We took a break from finding geocaches to find some benchmarks instead.

We came for the Dam Tour, but found a bunch of Benchmarks too. Easy to find, hard to figure out which is which.

[Photos:]
photoClose-up View of GR1863
photoStep-Back view of Gr1863

Saw on walkway.

Mit Stage_Worm diesen Benchmark gesucht und gefunden.....

Auch diesen Benchmark konnten wir gleich finden !!

Also found this one on my walk on the dam.

OMG! Seems as the whole Hoover Dam is covered with Benchmarks. I found quite a lot, but not sure if I found all of them. Many of them are located just within a couple of feet.

What a great surprise while visiting Hoover Dam.

[Photos:]
photo

Found in good condition

[Photos:]
photoGR1863

Found this during our ET-Highway USA Geocaching Adventure Road Trip when we visited the Hoover Dam

Found it during our western migration to California from Florida.

Found at 12:52 with we4fullers (my brother-in-law's family). I'm down here from the Seattle area for a couple of weeks causing havoc for them.

[Photos:]
photo
photo

Great day at Hoover Dam geocaching and getting some BM's with my brother in law down from Seattle (2nd1of3) and family.

[Photos:]
photoA
photoA

Found while on vacation just stumbled upon this

[Photos:]
photo
photo

Found this Benchmark while our road trip on this awesome monument. It must be been like hell to build this all year long.

[Photos:]
photogr1863

Found on the Dam Tour

Found the disk while walking around the dam

[Photos:]
photo

Found this while walking the dam.

Walked the entire length of the dam both sides and photographed all the benchmarks we could find. All we found were in good shape.

Saw this benchmark while visiting the Hoover Dam.

[Photos:]
photo

Found while visiting Hoover Dam today.

[Photos:]
photoHoover Dam triangulation benchmark

Love all the markers along the Hoover Dam.

Found walking on Hoover Dam

[Photos:]
photoGR 1863 A

Found while visiting the Hoover Dam with fun-gi and Savvy*cacher.

[Photos:]
photoGR1863

Its funny to see all the visitors just walking past these benchmarks, but when I stop, bend down and take a close up picture then walk away. other people then scoot over and take a picture too..

Found whilst crossing Hoover Dam with the family.

[Photos:]
photoDSC_0322

Found this one and many others while visitng the Hoover Dam and do some geocaching in this area.

Found this while visiting the Hoover Dam with family. This seems to be a duplicate.

[Photos:]
photoHoover Dam - Triangulation Disc A

Found on the Dam Tour

We found this Benchmark during our Holiday in Nevada. Thx for showing.

[Photos:]
photoGR1863

Out grabbing as many Dam Benchmarks as I could find.

[Photos:]
photoA

Fun day out with the mother on our girls trip from Oregon to Vegas. Still in good shape!

Found while wandering around and over the Hoover Dam. Mark in good condition.

[Photos:]
photoGR1863

Found a few Benchmarks while wandering around at the Hoover Dam.

Found while exploring the dam with the magtfplanner crew . Another duplicate. This time with GR0581. Works for me .

[Photos:]
photoGR1863

Found it on Hoover Dam. This PID no longer exists in the NGS Database, so it must have been a duplicate with GR0581.

[Photos:]
photoGR1863 A, Hoover Dam NV side

On our excursion to the Hoover Dam, I was able to find this Triangulation Point by accident. Greetings from Switzerland!

[Photos:]
photoLocation
photoCloseup

Found this benchmark along with many others while walking across the Hoover Dam.

[Photos:]
photoA Closeup
photoA Area View

Found it while hiking and visiting Hoover Dam with the family.

I found this Benchmark at the Vistit from the Hover Dam

Hab Dich gesehen!!

[Photos:]
photoGR1863

Found while touring the dam today.

Found whilst visiting the U.S. together with Turako and Silas07.

Discovered while visiting the Hoover Dam while taking a break while working on the E.T. trail in December

There are so many benchmarks at Hoover Dam! Found it!

Found it today at 10:45a

[Photos:]
photoA

We had more fun looking for BM then pay attention to the tourist looking at the dam!

[Photos:]
photoWhat are they looking down at?
Another find why looking at the dam, well really looking for BM!

We found this benchmark while visiting the Hoover Dam with KFDCanada&GEDCanada as we headed towards Williams and a visit to the Grand Canyon. It was an amazing day and we thoroughly enjoyed seeing the Dam.

[Photos:]
photoGR1863

I had a hard time trying to figure out what Benchmarks I found because of all the wild logging and picture posting. I had a great time at Hoover Damn anyway and think that the 12 I found are correctly posted with the right pictures.

[Photos:]
photoGR1863

we found it on a very hot day .
Greeting from germany

[Photos:]
photo4f264a64-2475-4c1d-bd75-041fca52bbd0
photo20130513_145002

Found while doing some waymarking and geocaching at the Hoover Dam.

Got this one while visiting the dam. It's very worn, but able to figure it out pretty easily.

Found this on a trip to Hoover Dam. I was not looking for it, but there it was!

On our trip to the Hoover Dam we also saw this disc.

One of 6 BM triangulation station disks found today on the Hover Dam bridge in 106 degree heat.

[Photos:]
photoGR1863

While on a Dam Hike

Found while touring the dam. Designation is wearing off.

[Photos:]
photoGR1863
Designation - A
photoGR1863
Designation - A

Seen on the Hoover Dam.

[Photos:]
photoGR1863

Found this benchmark while visiting the Dam with friends.

What an amazing spectacle! This was our first major stop while visiting Vegas.

Found it in good condition.

[Photos:]
photoGR1863 Stamped A / 1935
Benchmark

found as described

Spotted while visiting the Hoover.

[red]Another find on our way to Vegas. Visiting from Alabama![/red]

While visiting Vegas I took the trip to Hoover Dam. I was a little pressed for time and made it a quick visit.
Snapped a shot of this one on my visit.

[Photos:]
photoA GR1863

On vacation with the family and picking up a few BMs as we walk the dam.

[Photos:]
photoClose up Gr1863 A 1935

One of many benchmarks that I found while visiting the Hoover Dam today.

[Photos:]
photoA

Interesting Location

Found while walking Hoover Dam.

[Photos:]
photoA

While visiting Hoover Damm

Found it while on Damm

Found it with friends from Pennsylvania.

Saw it at the dam.

One of many benchmarks at Hoover Dam. Great place to hunt for BM's.

[Photos:]
photoA

a very impressive construction - found the benchmark while visiting the hoover dam and on our powercachingtour through california, nevada and arizona - best regards from austria - kiwilex

Found on the way to LV
THX GRAC

Our first benchmark and we couldn't have started in a better location. This structure is amazing.

[Photos:]
photoIMG_3969

I can not say it enough......The dam is beautiful but it doesnt hold a candle to the bridge that is above it now....this place is amazing !

This was found on a nice day while looking at the new bridge

[Photos:]
photo100_0223

Enjoyed finding this one while touring the Dam on way to Zion.

On way to Grand Canyon West via Hoover Dam

Found during tour of dam.

Dam benchmark

Was headed to St. George from Phoenix and stopped at the dam!
NICE!

Found while visiting the dam with Varg.

Found this one while visiting the dam.

Found While Visiting Dam

Found as described.

[Photos:]
photoGR0581-GR1863

Found at the Hoover Dam. Landnavmaster

[Photos:]
photoHoover Dam Triangle A-3
Hoover Dam Triangle A-3

Found while touring the Dam with the family.

[Photos:]
photoGR1863

Found while visiting the dam.

[Photos:]
photoA1935-1

Another one at Hoover Dam.

[Photos:]
photoGR1863 marker

Found it today while looking for benchmarks on Hoover Dam.

[Photos:]
photoGR1863

We found this one while walking back over hoover dam after taking the tour. Dam and overall site are incredible!!!

[Photos:]
phototriangulation disk A

I have visited Hoover Dam many times, but it was before I knew about benchmarks and geocaching. I came here to get some pictures of the new bridge under construction. Wow! Finding a bunch of National Geodetic Survey markers on the dam was a bonus.

Found this benchmark touring Hoover Dam.

Found this benchmark while on an adventure with my dad.

Found this baby while walking the top of the dam.

One of many on the Hoover Dam

Found on a trip to the dam

[Photos:]
photoA w/ GPS

Usnig the coordinates this is the one that I say I found. I don't know about the other "A".

[Photos:]
photoIMG_0542

Found this and some other ^^

Easy find in the sidewalk along with many others.
It seems likely that GR0581 and GR1863 are the same marker.

[Photos:]
photoTriangulation Station A

Another easy one to find.

[Photos:]
photoA Detail View
photoA Overall View

Recovered as described.

[Photos:]
photoGR1863 on Hoover Dam

2nd BM find after taking the tour of the Dam.

Founda after tour of dam.

Went to Hoover Dam on a cold and windy Christmas day. Lots of people there even though the visitor center was closed.

It seems likely that GR0581 and GR1863 are the same marker.

[Photos:]
photoGR1863 or GR0581
photoGR1863 or GR0581 location

Yep, still there.
PASSINGWIND

Saw these as we walked across the dam. Thanx!

Just out doing some dam sightseeing.

Out with Fiddlefiend and found 18 benchmarks. I am sure we missed a bunch, too.

Inadvertently stumbled on 18 benchmarks while visiting from Illinois with Mandolinman. That'll teach us to wander off without our GPS.

Found this one more then enough times. We have been to the dam 5-6 times with family!

Found at the Dam

4th of 5 found today

[Photos:]
photoGR1863 w GPSr.jpg

Found this while on our Vagas vacation with Daddy D-tour. Spent the day at Hoover Dam and Boulder

Found this with oldest daughter Nightfox while on vacation in Las Vegas, took a road trip out Hoover Dam.

look, another one!

[Photos:]
photoA

Located.

Found amongst a treasure-trove of benchmarks in this area!

Mark found.

Found while on vacation!!

Found this while on vacation.

[Photos:]
photoVacation 2006 363.jpg

Found while taking a nice morning stroll around the area.

[Photos:]
photoA bm
photoA Location

Found in good condition.

[Photos:]
photoA

Was in Vegas with my boyfriend Doltishguy and found this one. Just now getting my own account set up to log it. See Doltishguy's entry.

My girlfriend and I were walking across the Hoover Dam and saw it. Didn't have my GPS because I wasn't in the benchmarking frame of mind......

[Photos:]
photoA 1935

Racoon, Froggie, Kids and I found this one while huntiong them out today

[Photos:]
photoBenchmark and some friends

Found during our honeymoon

[Photos:]
photoHooverdam

Found as described. This is also GR0581. See GR0581 for photos.

Found it!

got it

Fun to find now that we know what they look like!!

Recovered in good condition

Recovered in good condition

Spotted this guy while walking back from logging the hoover dam virtual. Tons of these disks in the area.

Found today with many others on the bridge. Almost mistook the 'A' for a '4'.

Found it in OK Condition

[Photos:]
photo1
1

Found with my mom while walking the dam.

Fun find, found while on the tour.

[Photos:]
photoDisk

Located as described. Mark is highly polished and the A is slight.

[Photos:]
photoMark
photoMark with GPS

One of a couple of BM's we found while out on vacation. Just forgot to get around to logging them.

Recovered in good condition while walking along the dam..

N 36° 01.001 W 114° 44.284

Located as described.

[Photos:]
photoTriang. BM

Great place to visit and a chance to find a few benchmarks.

Documented History (by the NGS)

01/01/1935 by BOR (MONUMENTED)
DESCRIBED BY US BUREAU OF RECLAMATION 1935 STATION IS A STANDARD USC AND GS STATION DISK MARKED A 1935 AND SET FLUSH WITH THE SIDEWALK. THE STATION IS LOCATED ON THE UPSTREAM SIDEWALK OF HOOVER DAM APPROXIMATELY 300 FEET TOWARDS ARIZONA FROM THE NEVADA END OF THE DAM.
01/01/1990 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1990 (MG) RECOVERED IN GOOD CONDITION.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in June 1998.
  • 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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