2017-04-08

AE4848 "S 1164 RESET" 1997

I found near the entrance to the airport in Independence, Ca. as described and in good condition.  The mark is described as being "set in the top of a concrete post projecting 0.5 foot above the ground", but I didn't find the mark immediately as I expected.  Over time, topsoil had moved in and covered everything.  Thankfully, close calls to the fence and witness post showed me where to look.  After kicking the dirt around for a few minutes, the mark was exposed.  I covered it back up before I left.

The published altitude of the mark is 3903.7, but my GPSr initially showed and elevation of 4000+ feet.  There was good satellite coverage, but the thick tree cover probably caused some problems.  After a few minutes, the GPSr was able to settle down and show an elevation of 3900'. 
_____________________________________
Published Details for Benchmark: AE4848
N 36° 48.583 W 118° 12.267 (NAD 83)
Altitude: 3903.7

Coordinates may not be exact. Altitude is RESET and location is SCALED.

Location: In INYO county, CA (View Original Datasheet)
Designation: S 1164 RESET
Marker Type: vertical control disk
Setting: set into the top of a round concrete monument
Stability: May hold, but of type commonly subject to surface motion.

Documented History (by the NGS)
01/01/1997 by CADT (MONUMENTED)
DESCRIBED BY CALTRANS 1997 (KR) 0.4 MILE (0.6 KM) NORTHWEST FROM INDEPENDENCE, 0.45 MILE (0.72 KM) NORTHWEST ALONG US HIGHWAYS 395 AND 6 FROM THE COUNTY COURTHOUSE AT INDEPENDENCE. AT THE MAIN ENTRANCE TO THE INDEPENDENCE AIRPORT, IN A EAST-WEST ROW OF TREES, 111.5 FEET (34.0 M) EAST OF THE CENTERLINE OF THE HIGHWAY, 73.0 FEET (22.3 M) SOUTH-SOUTHEAST OF THE CENTER OF THE ENTRANCE OF THE AIRPORT, 85.0 FEET (25.9 M) EAST OF POWER POLE NO. XP4-102 WITH A GUY WIRE, 1.6 FEET (0.5 M) NORTH-NORTHEAST OF A FENCE, 1.6 FEET (0.5 M) SOUTH-SOUTHEAST OF A WITNESS POST, SET IN THE TOP OF A CONCRETE POST PROJECTING 0.5 FOOT (15.2 CM) ABOVE THE GROUND. N 88 DEGREES W 74.7 FEET (22.8 M) TO TOP OF FIRE HYDRANT, S 66 DEGREES W 111.5 FEET (34.0 M) TO POWER POLE NO. XP4-102 WITH GUY WIRE, N 56 DEGREES E 66.7 FEET (20.3 M) TO POWER POLE NO. M26380V WITH GUY WIRE.

AE4848 "S 1164 RESET" 1997 - Benchmark detail.
AE4848 "S 1164 RESET" 1997 - Benchmark and GPSr.
AE4848 "S 1164 RESET" 1997 - Benchmark setting and witness post.  The mark was found under 3 inches of topsoil.
AE4848 "S 1164 RESET" 1997 - Benchmark location setting and witness post.  The mark was found under 3 inches of topsoil.  View southeasterly.
AE4848 "S 1164 RESET" 1997 - Benchmark location setting and witness post.  The mark was found under 3 inches of topsoil.  View southwesterly.
AE4848 "S 1164 RESET" 1997 - Benchmark and GPSr.  View northeasterly toward the Independence Airport.
AE4848 "S 1164 RESET" 1997 - Benchmark coordinates and settled elevation.

2015-05-02

Wall Street Journal Article: "Forget Geocaching, Bench-Mark Hunting Is the New Nerdy Hobby"

Enthusiasts search for geodetic survey disks wherever they may be: cities, country roads, a man’s front yard.

By ERICA E. PHILLIPS
Updated May 2, 2015 12:36 a.m. ET
Please click HERE for a link to the full article at Wall Street Journal.



SPRINGVILLE, N.Y.—On an overcast spring morning in this Buffalo suburb, Robert Macomber, armed with a shovel, a hand-held GPS device and a photocopied topographic map, set off into a wooded area near the local country club’s 14th hole in search of quarry that might elude a less determined hunter.

The 62-year-old telecommunications specialist had driven nearly 200 miles from his Canfield, Ohio, home for this expedition. Neither a steep climb nor the surging creek below—high from the snow melt—was going to keep him from his purpose: locating a 3-inch-wide metal disk, pegged to an old bridge abutment and stamped: “U.S. COAST & GEODETIC SURVEY BENCH MARK.”

Before the day was done, he had measured, searched and dug for similar disks outside a Buick dealership, near an old railroad bed, in a friendly man’s front yard and at various spots along a two-lane country road. Of 14 bench marks he aimed to find, he located 11.

“Some guys go hunting, some guys go fishing, some guys play golf,” Mr. Macomber said. “I look for bench marks.”

The disks he found that day are part of a nationwide network of nearly 1 million similarly marked points whose information such as latitude, longitude and elevation are maintained in a government database. Data on these points is used for a variety of surveying and engineering purposes including drawing maps and laying roads or sewer lines. The bench marks—many well over 100 years old—were placed by surveyors atop high peaks, along important roadways, on the sides of public buildings, and everywhere in between.

Bench marks “are kind of like a skeleton or basic framework” for designing the nation’s infrastructure, said Malcolm Archer-Shee, a programmer who works with the National Geodetic Survey’s Integrated Database. The NGS is a part of the National Oceanic and Atmospheric Administration, which is responsible for earth science research, from tracking the weather to monitoring the environmental health of the coasts.

A few years ago, Mr. Archer-Shee wrote a computer program showing hobbyists and professional surveyors where they can find bench marks. The program pulls coordinates and a description of the surroundings from the national database into Google Earth. But much information in the database he used was outdated and the measurements—recorded before the advent of GPS in many cases—were off.

Now, thanks to the work of volunteer hobbyists like Mr. Macomber, the national database is far more up-to-date. Upon locating, or “recovering,” a bench mark, these admittedly nerdy hunters meticulously record the GPS coordinates, the mark’s current condition and the measured distances from nearby points of interest. They then file a report and digital photographs to NGS—known as “recovery notes.”

According to Mr. Archer-Shee, about 80% of the recovery information in the national database is now crowdsourced in this manner.

An avid bench-mark hunter in his own right, he also contributes reports in his spare time. “It’s like a treasure hunt,” Mr. Archer-Shee said. “When you can find one that somebody hasn’t found in 50 years, it’s kind of an ego-boosting experience.”

Many in the small community of bench-mark hunters happened upon the hobby via their interest in geocaching—a sort of high-tech scavenger hunt where players hide an object and list its geographic coordinates on the website geocaching.com. The site now includes a dedicated page for beginning bench-mark hunters.

Jennifer Galas recorded coordinates and photographed a bench mark in Acadia National Park in Maine.
PHOTO:JENNIFER GALAS
Jennifer Galas, who met her husband through geocaching, said several years ago she saw a post on the site linking to the NGS database.

Since then, the Pennsylvania couple has focused their hunting efforts on bench marks. Together, they have located about 1,000. They even seek them out when they’re on vacation.

“When we go away, we don’t necessarily like to look at touristy things,” Ms. Galas said. “We like to find interesting little spots that people don’t know about.”

Kerry Brady and his wife have taken “at least six vacations where bench marks were either the primary or secondary reason for the vacation,” the Beaverton, Ore., man said. And they’ve been successful—encountering more than 500 marks across 23 states.

Mr. Brady says their destinations, among them Eastern Oregon and Northern Nevada, are “not where normal people would go on vacation.” But the couple gets a thrill out of their avocation.

In an online message board frequented by bench-mark hunters, Mr. Brady said he jokes with other users about “filming ‘the happy dance’—where you finally find one you’ve been looking for forever.”

Ken Wachter of San Diego distinguishes that kind of hunting from what he calls “urban bench-marking” or, as he puts it: “the easy ones on the sides of buildings.” Venturing into rural areas with a shovel and a metal detector, he said, is the real deal.

“It involves hiking,” he said. “I’ve dug for bench marks that were a foot and a half buried. That was real exciting.”

Their passion for this obscure endeavor connects them with the nation’s history, many of the hobbyists say. Presidents George Washington, Thomas Jefferson and Abraham Lincoln were surveyors, after all. In the survey’s earliest days, objects like bottles or stone jugs were buried to mark critical spots. Finding those types of bench marks, enthusiasts say, is like finding the “Holy Grail.”

The NGS’s former Chief Geodetic Surveyor, Dave Doyle, has watched the popularity of bench-mark hunting grow in recent years as people “from literally all walks of life” started using GPS devices and sharing their stories online. Mr. Doyle offers expertise to this community, answering questions in the forum and via email.

“This is a fairly esoteric science,” he said. “So every time you find somebody who says, ‘I know what that is,’ you get this big smile and you just want to hug them.”

Mr. Doyle still goes out hunting, too. Recently, he recovered a series of marks in North Carolina that had been set in 1838. “After a while, it just kind of gets in your blood,” he said.

Still, not everyone shares the excitement. Mr. Macomber’s wife, Debora, says when her husband found out about bench marks, “he just became smitten with it, he absolutely went nuts.” In roughly 10 years of hunting, he has sent in more than 6,000 recovery reports. He even looked for a few during their honeymoon in Key West.

He has recruited family members to go out hunting with him over the years, but rarely gets them to go twice, his wife said. “It’s fun for him,” she said, “but it’s not so much fun for everyone else.”

2015-01-25

HS3503 - "M 832"

I took a chance on this mark and didn't expect to find it, or anything really.  This part of Livermore is busy and active, and the City has kept up with the modernization of the central part of their community.  I was quite surprised to come around the corner of the block near the approximate location of the coordinates and see an old corrugated metal building - as described in 1958.

As I looked around, I couldn't find any of the ties described in the original goto description.  I was a bit disoriented as the description called for the mark to be 200 feet northwest First Street.  The coordinates led me to the intersection of First Street and Old First Street, which are very much perpendicular to each other.  To make things more confusing - to me anyway - was the description that the mark was with 37 feet from a railroad rail.  There were no tracks immediately nearby, let alone, right next to the building.

Buildings get moved, street alignments change, but railroads rarely move.  However, as can be seen as Benchmark PID HS3511, they do occasionally. at least the tracks do.  It looked to me as if the entire set of tracks through this part of town had been shifted northerly, but I had no way of knowing how far, if at all.  I don't know if they were, but things sure made it look like they were.  (I know some of the locals would know for sure, but I did ask anyone.)

Since I was there, I focused my finding efforts on the building found at the coordinate location.  My search resulted with nothing found.  After I returned home, and was able to study the maps of the area, my suspicions that this is the wrong building were strengthened, and that building is, in my opinion, not the correct one.

The mark is described as being 200 northwest of the northwest curb of First Street, and 37 feet southeast of the southeast rail of the tracks.  That would mean that the mark, and building, is between the Street and the tracks, at a point where they are approximately 237 feet apart.  Looking at the maps, I could determine where First Street was - where a portion of Old First Street and (New) First Street are in the same alignment.  That alignment is skew to the tracks, and there is only one place where the tracks and the Street are about 237 feet apart (assuming the tracks haven't been relocated).

A return visit two weeks later (on 7 February 2015) found an old service station, now being used as a recycling collection center, at the new calculated location for the mark.  The building was not of the type or vintage that would have ever been covered in corrugated metal.  Also, there were no buildings within 50-60 feet of the tracks in any direction, as far as I could see, let alone, the recycle center building.

I believe this mark has been destroyed.  I'm unable to find any evidence of either its destruction or existence, but there is no evidence of it alongside or adjacent to the tracks.


Published details for Benchmark: HS3503
N 37° 41.017
W 121° 45.917 (NAD 83)
Altitude: 494.4
Coordinates may not be exact. Altitude is VERTCON and location is SCALED.

Location: In ALAMEDA county, CA View Original Datasheet
Designation: M 832
Marker Type: bench mark disk
Setting: massive structures
Stability: Probably hold position/elevation well.

Documented History (by the NGS)
01/01/1947 by CGS (MONUMENTED)

01/01/1958 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 AT LIVERMORE. AT LIVERMORE, IN R2E T3S S9, ALONG THE SOUTHERN PACIFIC COMPANY RAILROAD, 200 FEET NORTHEAST OF THE NORTHEAST CURB OF EAST FIRST STREET, 37 FEET SOUTHEAST OF THE SOUTHEAST RAIL OF THE MAIN TRACK, 30 FEET SOUTHEAST OF THE SOUTHEAST END OF A WOODEN BOX CULVERT UNDER THE RAILROAD, AT THE WEST CORNER OF A LARGE CORRUGATED METAL BUILDING (FORMERLY THE CENTRAL CALIFORNIA POULTRY COMPANY), SET VERTICALLY IN THE NORTHWEST CONCRETE FACE OF THE FOUNDATION, 6 FEET NORTHEAST OF THE WEST CORNER OF THE FOUNDATION, AND ABOUT 0.2 FOOT ABOVE THE GROUND.

01/01/1974 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 RECOVERED IN GOOD CONDITION.

Found details for Benchmark: HS3503
Searched for it 08:30, 25 January 2015. The benchmark was not located but may remain in place. Most of the described ties to the benchmark have been removed however, the corrugated metal building remains in place. At this point it is unknown if the westerly corner of the corrugated building is the original westerly corner of the corrugated metal building, or if a portion of it has been removed. The area has been groomed with gravel, and the corrugated metal siding comes all the way to the ground. No concrete foundation can be seen, however it may still exist and the mark may still be intact.

No new coordinates were taken.

HS3503 "M 832" - Benchmark setting: "corrugated metal building".  View west across Old First Street.
HS3503 "M 832" - Benchmark setting: "corrugated metal building".  View southerly at the northerly corner of the building.
HS3503 "M 832" - Benchmark setting: "corrugated metal building".  View southeasterly at the northwest face of the building.
HS3503 "M 832" - Benchmark setting: view behind the gate.  The metal siding touches the ground; no concrete foundation is exposed.
HS3503 "M 832" - The benchmark is described as being 200 feet northwest of the north curb of First Street and 37 feet southeast of the southeast rail.  The coordinate location, and the metal sided building near the location, are southeast of First Street.  It's not the correct building.
HS3503 "M 832" - The benchmark is described as being 200 feet northwest of the north curb of First Street and 37 feet southeast of the southeast rail.  This is the only place where the northwest line of First Street and the southeast rail are approximately 237 feet apart.  There is no building, or wooden box culvert under the railroad, in the area matching those described in the benchmark datasheet.  (Map View)
HS3503 "M 832" - The benchmark is described as being 200 feet northwest of the north curb of First Street and 37 feet southeast of the southeast rail.  This is the only place where the northwest line of First Street and the southeast rail are approximately 237 feet apart.  There is no building, or wooden box culvert under the railroad, in the area matching those described in the benchmark datasheet.  (Aerial View)

2014-12-24

GT1509 - D 363 Revisited

This benchmark was first originally visited on January 2, 2004.

I drove by this location a few weeks (months) ago and noticed that things had changed.  The biggest change, although not the most immediately obvious, was that the fence had been replaced.  Along with its replacement was the removal of the view-obstructing, wood slating, as it was now easy to see the airport and runway.

I was able to stop to get some pictures today and was surprised to find GT1509 - which had been outside of the fence - now inside the fence.  At least a portion of it.  I can only assume that the mark was moved/damaged/destroyed by the fence construction crew.  I'm unsure as to why they did though.  As far as I can tell, the fence alignment didn't change, the mark was not in the way of the alignment, and the mark's concrete setting was flush with the ground.  It shouldn't have been in the way of the fence crew, and truthfully, it may not have been them.  Regardless of who, the result is the same.  This mark has been severely damaged, possibly destroyed.

The mark itself is still intact in its concrete setting, although the setting has been uprooted and the top 15 inches or so have been broken off.  The mark and the top portion of the setting is and now resting inside the airport fence along with some other small pieces of concrete which most likely were for the Rotary International sign referenced in the original description, and seen in the pictures from my first visit 11 years ago.
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Published details for Benchmark: GT1509
N 36° 44.117 W 119° 49.433 (NAD 83)
Altitude: 278.4
Coordinates may not be exact. Altitude is VERTCON and location is SCALED.

Location: In FRESNO county, CA View Original Datasheet
Designation: D 363
Marker Type: bench mark disk
Setting: set into the top of a round concrete monument
Stability: May hold, but of type commonly subject to surface motion.

Documented History (by the NGS)
01/01/1953 by CGS (MONUMENTED)

01/01/1969 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1969 AT FRESNO. AT FRESNO AIRPORT, AT THE NORTHWEST CORNER OF THE FIELD, ALONG STATE HIGHWAY 180, AT THE WEST CITY LIMITS, 0.1 MILE WEST OF THE T JUNCTION OF TEILMAN AVENUE, 0.05 MILE EAST OF THE INTERSECTION OF WEST AVENUE, 37 1/2 FEET SOUTH OF THE CENTER LINE OF THE HIGHWAY, 1.7 FEET NORTHWEST OF AN IRON POST SUPPORTING A ROTARY INTERNATIONAL SIGN, 4.5 FEET NORTH OF AN AIRPORT FENCE, 2.0 FEET EAST OF A WITNESS POST, ABOUT 1/2 FOOT HIGHER THAN THE HIGHWAY, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.2 FOOT ABOVE THE GROUND. NOTE-- THE AIRPORT IS NOW KNOWN AS CHANDLER MUNICIPAL AIRPORT.

01/01/1974 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 RECOVERED IN GOOD CONDITION.

01/01/1978 by NGS (POOR)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 MARK RECOVERED IN POOR CONDITION.

Found details for Benchmark: GT1509
This mark has been uprooted and the top 15 inches of the concrete post is now resting inside the airport fence. The referenced Rotary International sign is now gone. Smaller pieces of concrete lying nearby looked to by parts of the sign's foundation.

A portion of the airport fence looks as if it has recently been replaced. The old & new fencing materials can be seen in the photos. Damage to the mark most likely happened at that time.

No new coordinates were taken.

GT1509 "D363" - Benchmark detail.
GT1509 "D363" - Benchmark setting. The mark and its setting have been uprooted and are now resting inside the airport fence.  The other piece of concrete is most likely from the referenced Rotary International sign.
GT1509 "D363" - Benchmark setting. The mark and its setting have been uprooted and are now resting inside the airport fence.  The other piece of concrete is most likely from the referenced Rotary International sign.
GT1509 "D363" - Benchmark setting.  The mark and its setting have been uprooted and are now resting inside the airport fence.  I believe the smaller pieces of concrete to be the foundation of the referenced Rotary International sign, which is now missing.  New & old fencing can be seen.  View southerly toward the runway and tower.
GT1509 "D363" - Benchmark setting.  The mark and its setting have been uprooted and are now resting inside the airport fence.  The gas warning sign is not new, but not referenced previously.  The referenced Rotary International sign is gone.  New & old fencing can be seen.  View southerly toward the runway and tower.
GT1509 "D363" - Benchmark setting. The mark and its setting have been uprooted and are now resting inside the airport fence. View east along Whitesbridge Road (State Route 180).
GT1509 "D363" - Benchmark setting. The mark and its setting have been uprooted and are now resting inside the airport fence. View west along Whitesbridge Road (State Route 180).

2014-11-29

November 29, 2014 - Benchmarking in Caruthers, Ca

It's not often that I am able to dedicate some time solely to Benchmark Hunting.  Often, my hunts and finds are opportunistic endeavors, or they're planned around other daily events.  Today was different.  I found myself with an empty Saturday, with nothing scheduled on the calendar.  It's literally been months since I've had an open Saturday.  I still had my Honey-Do list, yard-work, etc., but there was nothing scheduled where I had to be somewhere for something, or someone.

I had some free time.

Caruthers. Ca. is a community not far from where I live.  It's a small town about 15 miles south of Fresno, has a population around 2,500 people, and it's known for its annual Caruthers District Fair, the largest free admission fair in the State of California.  I'd been wanting to search for the marks there for nearly a decade, and had never taken the time to do it.  That happened today.

The USC&GS set multiple marks around the area in the late '50s and early '60s.  As in most cases in the small Valley towns, many of the marks are still to be found in good condition.  The marks in Caruthers were found likewise.  Some were not found, some obviously destroyed due to development and urban growth, but many were found, right where the original survey crews set them.  Pictures and reports are below.

It was a good day for benchmark hunting.


GU1161 - H 363

This mark, and GU1162 along with it, are gone as far as I can tell.  The described airport is gone and there is nothing that even indicates there was an airport here.  A look at an aerial photo of the area shows where one may have been, but the surface feature that looks as it may have been a runway is now a ponding basin.

Published details for Benchmark: GU1161
N 36° 42.750
W 120° 01.983 (NAD 83)
Altitude: 223.3
Coordinates may not be exact. Altitude is VERTCON and location is SCALED.

Location: In FRESNO county, CA View Original Datasheet
Designation: H 363
Marker Type: bench mark disk
Setting: set into the top of a round concrete monument
Stability: May hold, but of type commonly subject to surface motion.


Documented History (by the NGS)

1/1/1953 by CGS (MONUMENTED)

1/1/1959 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1959 2.1 MI SE FROM KERMAN. 1.0 MILE EAST ALONG THE SOUTHERN PACIFIC RAILROAD FROM THE STATION AT KERMAN, THENCE 0.55 MILE SOUTH ALONG GOLDEN ROD AVENUE, THENCE 0.55 MILE EAST ALONG CHURCH AVENUE, AT BLAND AIRPORT, 31 1/2 FEET SOUTH OF THE CENTER LINE OF THE AVENUE, 2.0 FEET NORTH OF THE NORTHEAST CORNER OF THE WEST ONE OF TWO SMALL HANGARS, ABOUT 1/2 FOOT HIGHER THAN THE AVENUE, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.2 FOOT ABOVE THE GROUND.

Published details for Benchmark: GU1161
GU1161 was briefly searched for 12:10, 29 November 2014.

The mark was not located. The described airport no longer exists, nor do the hangers that are described. A building used for farm purposes, on the south side of Church Avenue may have been one of the hangers, however, the mark was not located near the northeast corner of that building.

No new coordinates were taken.

GU1162 - G363

Published details for Benchmark: GU1162
N 36° 42.750
W 120° 02.033 (NAD 83)
Altitude: 222.5
Coordinates may not be exact. Altitude is VERTCON and location is SCALED.

Location: In FRESNO county, CA View Original Datasheet
Designation: G 363
Marker Type: bench mark disk
Setting: set into the top of a round concrete monument
Stability: May hold, but of type commonly subject to surface motion.

Documented History (by the NGS)

1/1/1953 by CGS (MONUMENTED)


1/1/1959 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1959 2 MI SE FROM KERMAN. 1.0 MILE EAST ALONG THE SOUTHERN PACIFIC RAILROAD FROM THE STATION AT KERMAN, THENCE 0.55 MILE SOUTH ALONG GOLDEN ROD AVENUE, THENCE 0.5 MILE EAST ALONG CHURCH AVENUE, AT BLAND AIRPORT, 28 1/2 FEET SOUTH OF THE CENTER LINE OF THE AVENUE, 248.6 FEET WEST OF THE NORTHWEST CORNER OF THE WEST ONE OF TWO SMALL HANGARS, IN LINE WITH THE SOUTHWEST EDGE OF THE NORTHWEST-SOUTHEAST DIRT RUNWAY, 124.8 FEET NORTHEAST OF THE NORTHEAST CORNER OF A SMALL WHITE HOUSE, 75 1/2 FEET SOUTHEAST AND ACROSS THE AVENUE FROM A POWER POLE, 1.8 FEET SOUTH OF A WITNESS POST, ABOUT 1/2 FOOT HIGHER THAN THE AVENUE, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.1 FOOT ABOVE THE GROUND.

Found details for Benchmark: GU1162
GU1162 was searched for at 12:00, 29 November 2014.

The mark was not located. The described airport, house, and hangers no longer exist, although one of the farm buildings south of the road may have been one of the hangers.

No new coordinates were taken.

GT1330 - K 1039

GT1330 was found in bad shape.  It would be classified as damaged.  The mark and its setting look to be intact, but the setting is leaning, somewhere in the neighborhood of 30° out of plumb.  The setting is immediately against a relatively new power pole.  The setting was most likely upset when the pole was replaced.  The mark is no longer suitable for survey use.
___________________________________

Published details for Benchmark: GT1330
N 36° 33.483
W 119° 50.983 (NAD 83)
Altitude: 244
Coordinates may not be exact. Altitude is VERTCON and location is SCALED.

Location: In FRESNO county, CA View Original Datasheet
Designation: K 1039
Marker Type: bench mark disk
Setting: set into the top of a round concrete monument
Stability: May hold, but of type commonly subject to surface motion.


Documented History (by the NGS)
01/01/1959 by CGS (MONUMENTED)

DESCRIBED BY COAST AND GEODETIC SURVEY 1959 1.6 MI N FROM CARUTHERS. 0.1 MILE NORTHEAST ALONG TAHOE STREET FROM THE POST OFFICE AT CARUTHERS, THENCE 1.45 MILES NORTHWEST ALONG HENDERSON AVENUE, 0.35 MILE SOUTHEAST OF THE INTERSECTION OF NEBRASKA AVENUE, AT THE CROSSING OF A POWER LINE, 21 1/2 FEET NORTHEAST OF THE CENTER LINE OF THE AVENUE, 20 FEET NORTHWEST OF THE CENTER LINE OF A DRIVEWAY LEADING NORTHEAST TO A SMALL HOUSE, 1 FOOT SOUTHWEST OF A POWER POLE WITH A GUY WIRE, 1.7 FEET NORTHEAST OF A WITNESS POST, ABOUT LEVEL WITH THE AVENUE, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.3 FOOT ABOVE THE GROUND.


Published details for Benchmark: GT1330

N 36° 33.480 W 119° 51.017
GT1330 was found at 11:10, 29 November 2014.

The mark was found generally as described, but in poor condition. The mark setting is immediately adjacent to a power pole with wires going east, west, and southeast with one guy wire. The mark setting has been uprooted and is leaning. Elevation cannot be relied upon.

WGS84 coordinates found by 2 minute occupation with 8 strong satellites and 2 WAAS satellites.
GT1330 "K1039 1959" - Benchmark detail.
GT1330 "K1039 1959" - Benchmark and the GPSr.
GT1330 "K1039 1959" - Benchmark setting.  View northwesterly along Henderson Road.

GT1329 - G 1039

GT1329 was found in good condition and very stable.  About as good as it gets for being adjacent to farmland.  The nearby power pole and witness post help to protect this one.  Interestingly, another benchmark hunter found this mark in February 2010, but his pictures don't show the witness post. (View that image HERE.)
___________________________________

Published details for Benchmark: GT1329
N 36° 32.800
W 119° 50.250 (NAD 83)
Altitude: 243
Coordinates may not be exact. Altitude is VERTCON and location is SCALED.

Location: In FRESNO county, CA View Original Datasheet
Designation: G 1039
Marker Type: bench mark disk
Setting: set into the top of a round concrete monument
Stability: May hold, but of type commonly subject to surface motion.


Documented History (by the NGS)

01/01/1959 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1959 0.6 MI N FROM CARUTHERS. 0.1 MILE NORTHEAST ALONG TAHOE STREET FROM THE POST OFFICE AT CARUTHERS, THENCE 0.45 MILE NORTHWEST ALONG HENDERSON AVENUE, 104 FEET NORTHWEST OF THE CENTER OF THE INTERSECTION OF MOUNTAIN VIEW AVENUE, 23 FEET SOUTHWEST OF THE CENTER LINE OF HENDERSON AVENUE, 84 FEET NORTH OF THE CENTER LINE OF MOUNTAIN VIEW AVENUE, 4.2 FEET SOUTH OF A 4-BY 4-INCH WOODEN POST SUPPORTING A MILEAGE SIGN, 1 FOOT NORTHWEST OF A TELEPHONE POLE, 1.7 FEET SOUTHWEST OF A WITNESS POST, ABOUT LEVEL WITH THE AVENUE, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.3 FOOT ABOVE THE GROUND.


Found details for Benchmark: GT1329

N 36° 32.843 W 119° 50.281
GT1329 was found at 10:50, 29 November 2014.

The mark was found generally as described and in good condition. The described call distances to the center lines of the roads are adequate, although the ties in the immediate vicinity of the mark have changed.

The mark is now 4 feet northwest of a new telephone pole, 1 foot northwest of an old metal witness post, and the 4x4 post holding a mileage sign has been moved about 150 feet north west of the mark.

WGS84 coordinates found by 3 minute occupation with 7 strong satellites and 2 WAAS satellites.

Benchmark detail.
Benchmark witness post.
Benchmark, witness post, and GPSr.
Benchmark setting.  View southeasterly along Henderson Road toward Mountain View Avenue.
Benchmark setting.  View southeasterly along Henderson Road toward Mountain View Avenue.
Benchmark setting.  View easterly across Henderson Road.
Benchmark setting.  View northwesterly along Henderson Road.
Benchmark coordinates.

GT1321 - S 1036

Found GT1321 in great condition.  At least, it seemed to be in great condition.  It was stable, and in the correct general location, however, the witness post was loose; the result of farming activities, or an automobile accident.  That's not much of an issue for the mark, however.  It looked as of the adjacent power pole had possibly been relocated, though, as it was relatively new.  That was of interest to me.  The described pole was 2 feet southeast of the mark; the new one 1.5 feet east.  These measurements were from the mark to the center line of the pole.  The side of the pole was only inches from the side of the concrete monument setting.  The augers used to set power poles in the ground could easily dislodge a benchmark setting.  While GT1321 looked to be in great condition, its vertical position may have been compromised.  It would take some high precision survey equipment - higher precision than the hand held GPSr I had with me - to correctly determine if the mark was, in fact, stable.

As a benchmark hunter, I'm calling it a find.  As a surveyor, I'd be cautious.
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Published details for Benchmark: GT1321
N 36° 31.900
W 119° 50.700 (NAD 83)
Altitude: 240.1
Coordinates may not be exact. Altitude is VERTCON and location is SCALED. (more info)

Location: In FRESNO county, CA View Original Datasheet
Designation: S 1036
Marker Type: bench mark disk
Setting: set into the top of a round concrete monument
Stability: May hold, but of type commonly subject to surface motion.

Documented History (by the NGS)
01/01/1959 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1959 1 MI SW FROM CARUTHERS. 0.55 MILE SOUTHWEST ALONG TAHOE STREET FROM THE POST OFFICE AT CARUTHERS, THENCE 0.25 MILE WEST ALONG CLEMENCEAU AVENUE, THENCE 0.25 MILE SOUTH ALONG MARKS AVENUE, 38 FEET SOUTHWEST OF THE CENTER OF THE INTERSECTION OF KAMM AVENUE, 27 FEET WEST OF THE CENTER LINE OF MARKS AVENUE, 26 FEET SOUTH OF THE CENTER LINE OF KAMM AVENUE, 2 FEET NORTHWEST OF POWER POLE 4126, 1.1 FEET SOUTHEAST OF A POST SUPPORTING A STOP SIGN, 2.3 FEET SOUTHWEST OF A WITNESS POST, ABOUT LEVEL WITH THE AVENUES, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.2 FOOT ABOVE THE GROUND.

Found details for Benchmark: GT1321
N 36° 31.955 W 119° 50.725
GT1321 was found at 10:15, 29 November 2014.

The mark was found generally as described and in good condition. Distances to the center lines of the roads are adequate, however the power pole described has been replaced, and the stop sign and witness post have been moved.

The mark was found to be 1 foot southeast of a of a wooden witness post painted white labeled "CO BM"; 9 feet southeast of a street sign with a stop sign; and 1.5 feet westerly of a relatively new power pole with overhead lines going in four cardinal directions.

WGS84 coordinates found by 4 minute occupation with 8 strong satellites and 2 WAAS satellites.
GT1321 "S1036 1959" - Benchmark detail.
GT1321 "S1036 1959" - Benchmark and GPSr.
GT1321 "S1036 1959" - Benchmark, witness post, and GPSr.