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.
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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.)
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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.

GT1329 "G1039 1959" - Benchmark detail.
GT1329 "G1039 1959" - Benchmark witness post.
GT1329 "G1039 1959" - Benchmark, witness post, and GPSr.

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.

GT1320 - R669

The described location for GT1320 is very close to GT1321.  They would probably be within 15-20 feet of each other if GT1320 was still there.  It's not.  The roads are wider than they used to be and the location described from the centerlines places GT1320 under the pavement, if it remains at all.  I doubt it.
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Published details for Benchmark: GT1320
N 36° 31.900
W 119° 50.700 (NAD 83)
Altitude: 240.9
Coordinates may not be exact. Altitude is VERTCON and location is SCALED.

Location: In FRESNO county, CA View Original Datasheet
Designation: R 669
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)
Unknown by CGS (MONUMENTED)

01/01/1959 by NGS (MARK NOT FOUND)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1959 1 MI SW FROM CARUTHERS. ALONG MARKS AVENUE, 20 FEET WEST OF THE CENTER LINE OF THE ROAD, IN THE SOUTHWEST CORNER OF THE INTERSECTION OF MARKS AND KAMM AVENUES AND 2 FEET SOUTH OF STATE HIGHWAY SIGN POST. SET IN THE TOP OF A CONCRETE POST. NOTE-- THE ROAD HAS BEEN WIDENED AT THE DESCRIBED LOCATION.

Found details for Benchmark: GT1320
The location for GT1320 was visited on 29 November 2014.

This mark is described as being in the same general location as benchmark PID GT1321. It was described as being destroyed in 1959 by the NGS.

This mark is believed to be destroyed. No new coordinates were taken.

GT1323 - R 1036

This one is gone.  The school has been substantially remodeled at this location.  The described swimming pool and dressing rooms are gone and the area is now primarily used for the high school stadium.
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Published details for Benchmark: GT1323
N 36° 32.283
W 119° 50.267 (NAD 83)
Altitude: 244.3
Coordinates may not be exact. Altitude is VERTCON and location is SCALED.

Location: In FRESNO county, CA View Original Datasheet
Designation: R 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 AT CARUTHERS. AT CARUTHERS, 0.35 MILE SOUTHWEST ALONG TAHOE STREET FROM THE POST OFFICE, AT THE CARUTHERS UNION HIGH SCHOOL SWIMMING POOL, SET VERTICALLY IN THE SOUTHEAST WALL OF A CONCRETE FOUNDATION AROUND THE POOL AND DRESSING ROOM BUILDING, 34 FEET NORTHWEST OF THE CENTER LINE OF THE STREET, 0.5 FOOT SOUTHWEST OF THE EAST CORNER OF THE FOUNDATION, AND ABOUT 1 1/2 FEET HIGHER THAN THE GROUND.

Found details for Benchmark: GT1323
GT1323 was searched for at 10:02, 29 November 2014.

This mark is believed to be destroyed. The described high school swimming pool, the wall surrounding the pool, and the changing room building have all been removed. The road has been substantially widened and no buildings are within 100 feet of the road. The location is still part of the Caruthers High School but is now occupied by the Caruthers High School Stadium.

No new coordinates were taken.

GT1322 - Q 669

I had no luck finding this one.  This is the main road through town and it looks as if it's been widened.  The mark is described as being 25 feet off the centerline of the road.  That would put it in the south-bound travel lane.
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Published details for Benchmark: GT1322
N 36° 32.267
W 119° 50.300 (NAD 83)
Altitude: 244.6
Coordinates may not be exact. Altitude is VERTCON and location is SCALED.

Location: In FRESNO county, CA View Original Datasheet
Designation: Q 669
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)
Unknown by CGS (MONUMENTED)

01/01/1959 by NGS (MARK NOT FOUND)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1959 AT CARUTHERS. ALONG ROAD TO RIVERDALE, 25 FEET NORTH OF THE CENTER LINE OF THE ROAD, 170 FEET NORTHWEST OF THE CARUTHERS GRADE SCHOOL, 150 FEET SOUTHWEST OF CARUTHERS HIGH SCHOOL AND 1 FOOT SOUTH THE HIGH SCHOOL GROUNDS FENCE. SET IN THE TOP OF A CONCRETE POST.

Found details for Benchmark: GT1322
GT1322 was searched for at 09:50, 29 November 2014.

This mark is believed to be destroyed. The road has been widened substantially and the described grade school and high school have both been removed. Both properties are still school grounds, however the location for the grade school is now used for baseball fields, and the location for the high school is now the Caruthers High School Stadium.

No new coordinates were taken.

GT1325 - P 669 RESET

GT1325 is the type of mark that is difficult to miss due to its setting.  Prominently set, knee-high in the middle of a building wall, it stands out to a surveyor.  It's doubtful that the general public, and possibly even the building owners, pay it much attention though.  The building has been painted, and the mark with it, but someone has scraped a bit of paint of the mark in an effort to correctly identify it.
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Published details for Benchmark: GT1325
N 36° 32.483
W 119° 50.017 (NAD 83)
Altitude: 247
Coordinates may not be exact. Altitude is VERTCON and location is SCALED.

Location: In FRESNO county, CA View Original Datasheet
Designation: P 669 RESET
Marker Type: bench mark disk
Setting: massive structures
Stability: Probably hold position/elevation well.

Documented History (by the NGS)
01/01/1962 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1962 AT CARUTHERS. AT CARUTHERS, ACROSS TAHOE STREET FROM THE POST OFFICE, AT THE INTERSECTION OF TAHOE AND OAK STREETS, SET VERTICALLY IN THE NORTHEAST BRICK WALL OF THE FIRST NATIONAL BANK BUILDING, 30.8 FEET SOUTHEAST OF THE NORTH CORNER OF THE BUILDING, 43 FEET SOUTHWEST OF THE CENTERLINE OF OAK STREET, AND 2.2 FEET ABOVE THE CONCRETE SIDEWALK.

Found details for Benchmark: GT1325
GT1325 was found at 09:40, 29 November 2014.

The mark was found as described and in good condition. The building is no longer a bank, but is now the Adventist Health Community Care Center. The mark had been painted over when the building was painted, but a portion of the paint had previously been scraped off of the mark so the stamped designation can be read.

WGS84 coordinates found by 2 minute occupation with 6 strong satellites and 1 WAAS satellite.

GT1325 "P669 RESET" - Benchmark detail.
GT1325 "P669 RESET" - Benchmark and GPSr.
GT1325 "P669 RESET" - Benchmark set in the building wall.

GT1327 - H1039

I wasn't particularly expecting to find GT1327 as it has a previous "no find" on it nearly 12 years earlier, but it was at a logical place in town to start my searching for the day.  I looked diligently, but could tell that the road had been widened substantially since the 1959 benchmark description.  It could still be there, under the pavement, but I seriously doubt it.
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Published details for Benchmark: GT1327
N 36° 32.550
W 119° 49.933 (NAD 83)
Altitude: 246.2
Coordinates may not be exact. Altitude is VERTCON and location is SCALED.

Location: In FRESNO county, CA View Original Datasheet
Designation: H 1039
Marker Type: rivet
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)

Unknown by CA-019 (MONUMENTED)


01/01/1959 by NGS (GOOD)

DESCRIBED BY NATIONAL GEODETIC SURVEY 1959 AT CARUTHERS. AT CARUTHERS, 0.1 MILE NORTHEAST ALONG TAHOE STREET FROM THE POST OFFICE, AT THE INTERSECTION OF HENDERSON AVENUE, 29 FEET SOUTHEAST OF THE CENTER LINE OF TAHOE STREET, 29 FEET NORTHEAST OF THE CENTER LINE OF HENDERSON AVENUE, 3 FEET NORTHEAST OF POWER POLE 6 SUPPORTING A STREET LIGHT, ABOUT LEVEL WITH THE AVENUE, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.2 FOOT ABOVE THE GROUND.

Found details for Benchmark: GT1327
GT1327 was searched for at 09:25, 29 November 2014.
The mark is believed to be destroyed. The intersection and both streets have been widened, and the described position for the mark is now under pavement. A bank building now resides on the corner.

No new coordinates were taken.

GT1327 "P669 RESET" - Benchmark location.  View easterly across the Tahoe Street & Henderson Road intersection.  The intersection has been widened substantially since the 1959 benchmark description.
GT1327 "P669 RESET" - Benchmark location.  View northwest up Henderson Road, across Tahoe Street.
GT1327 "P669 RESET" - Benchmark location.  View southwesterly along Tahoe Street, across Henderson Road.

2014-10-21

Property Corner - J.A. Ross, L.S.2229

This post is not about a benchmark, but about a surveyor, and a property corner.

J.A. Ross was a prominent surveyor in and around the Fresno County area for nearly 60 years during the 20th Century.  In August of 1914, it was announced that he had been appointed Chief Deputy Engineer for the City of Fresno.  He went on to have his own Civil Engineering & Surveying firm which closed in December of 1968.  Afterward, he continued to work as the City Engineer for the cities of Firebaugh & Mendota in west Fresno County.

As a surveyor he performed many boundary surveys, recorded many maps, and set many property corners.  I found one recently.

At a house in Clovis, Ca., there is a wooden fence post at the corner of two chain link fences.
A wood post at the corner of two chain link fences.
Closer inspection showed something to be stuck in the top of the wood post.
Something stuck in the top of the wood post.
A nail and tag had been set in the top of the wood post to monument the property corner.  The tag was stamped L.S.2229.
J.A.Ross tag set on top of the wood post.
J.A.Ross tag detail.
The property owner told me that his father had removed a wood fence and installed the chain link fence in the early 1970s.  He never knew why his father hadn't removed the wooden fence post.  The post was there for more than just the fence, it was there as a property corner.

Considering J.A. Ross closed his private surveying business in 1968, this nail and tag would have been set sometime prior to that, meaning that it's nearly 50 years old.  Considering how exposed to the public and the elements this post is, and the tag on top of it are, it is in remarkably good condition.

A great find.

2014-08-09

Blaze Benchmark

The family & I visited the Fresno Flats Historic Village and Park in Oakhurst Ca.  We were given a personal tour by the resident docent who showed us the blacksmith shop, the print shop, various barns and homes, and other local artifacts.  One of the items on display on the outside of one of the buildings was a United Stated Geological Survey benchmark set in 1920.  The mark was set in a blaze in a tree, which closed over time.  When the tree fell (or was removed), the remnants of the benchmark were salvaged and put on display.

Oak Tree Blaze Benchmark - Elevation carving.
Oak Tree Blaze Benchmark description.
Oak Tree Blaze Benchmark description with the blaze (left) and reverse (right).

2014-01-26

Local Benchmark Lists

There are many local agencies in my area (and around the world actually) which have published lists and databases of their local benchmark loops.  However, the term "published" means different things to different agencies and jurisdictions.  It is often defined by the scope of the benchmark system, and the budget that the agency has to maintain their database, regardless of how complex it may be.  As such, some agencies publish their benchmark database online with an interactive GIS.  Other agencies may only keep a handwritten list and "publishing" said list is an act involving a Xerox machine.  Most agencies are somewhere in between.

For example, the City of Fresno has a searchable, online database, that lists the benchmarks by street.  It is not GIS based, but it's easy to use and plenty functional for those who use it.  The County of Fresno, on the other hand, maintains its database using an internal Access DataBase file.  It is not published online, but they will give copies of the most current database file to those who ask.  Most smaller communities just keep short lists and send them out to those who request them.

I've recently added some of the benchmark lists I have, and routinely use, to this blog in the form of a page titled "BMark Lists".  Look for the tab above, or click HERE.

2014-01-04

GU1005 - "G1040 1959"

I wasn't completely prepared to find this mark when I did.  It was late in the day, and I'd spent most of it burning a tank of fuel on a motorcycle ride.  I'd been through this intersection before, although it's not a usual route.  For some reason, I'd never seen this mark even though it is promently placed on the canal headwall, as many are throughout this part of the Valley.  I found my GPSr with dead batteries so I wasn't able to take a new set of coordinates. - KN
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Published details for Benchmark: GU1005
N 36° 36.217
W 120° 02.600 (NAD 83)
Altitude: 200.8
Coordinates may not be exact. Altitude is VERTCON and location is SCALED.

Location: In FRESNO county, CA View Original Datasheet
Designation: G 1040
Marker Type: bench mark disk
Setting: light structures
Stability: Mark of questionable or unknown stability.

Documented History (by the NGS)
1/1/1959 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1959 7.9 MI W FROM RAISIN CITY. 7.9 MILES WEST ALONG MANNING AVENUE FROM THE T JUNCTION OF ORMUS AVENUE AT RAISIN CITY, 8.15 MILES EAST OF SAN JOAQUIN, AT THE INTERSECTION OF MC MULLIN GRADE, AT THE CROSSING OF AN IRRIGATION CANAL, IN TOP OF THE EAST END OF THE NORTHEAST CONCRETE HEAD WALL OF A 72-INCH ASKEW CONCRETE PIPE CULVERT UNDER THE AVENUE, 30 FEET NORTH OF THE CENTER LINE OF THE AVENUE, 142 FEET NORTHWEST OF THE CENTER LINE OF MC MULLIN GRADE, AND ABOUT 1/2 FOOT HIGHER THAN THE AVENUE.

Found details for Benchmark: GU1005
Found at 16:30, 04 Jan. 2014 as described and in good condition. Published description is adequate. New coordinates were not taken.

GU1005 "G1040 1959" - Benchmark detail.
GU1005 "G1040 1959" - Benchmark set in a canal headwall.
GU1005 "G1040 1959" - Benchmark set in a canal headwall.  View north.