2002-09-02

HR0917 - G 703 RESET

County: FRESNO
State: CALIFORNIA

PUBLISHED DATA
Lat: 37° 03.950
Long: 119° 29.600
Alt: 1910.8
Designation: G 703 RESET
Marker Type: bench mark disk
Setting: light structures
Stability: Mark of questionable or unknown stability.

FOUND DATA
Lat: 37° 03.963
Long: 119° 29.649
Alt: NA

Found it at 19:00, 02 September 2002. Found it as described and in good condition. Original coordinates (NAD83) off by about 250 feet when in WGS84 mode. WGS84 coordinates found by 4 minute occupation with 6 strong satellites and 1 WAAS satellite.

Benchmark detail.


Benchmark detail.


The benchmark setting under the guard rail.


The view southerly down Auberry Road. The cap is under the guardrail just past the second post.

GU1699 - V 237 RESET

County: FRESNO
State: CALIFORNIA

PUBLISHED DATA
Lat: 36° 14.783
Long: 120° 18.917
Alt: 954.6
Designation: V 237 RESET
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.

FOUND DATA
Lat: 36° 14.802
Long: 120° 18.931
Alt: NA

Found it as described and in good condition. Original coordinates (NAD83) off by about 134 feet when in WGS84 mode. WGS84 coordinates found by 4 minute occupation with 6 strong satellites and 1 intermitent WAAS satellite.

Benchmark detail.


The benchmark and the GPSr.


The view northerly up State Route 33.


The view southeasterly toward the intersection of State Routes 33 & 198. The old school can be seen in the distance.

GU1761 - R 984

County: FRESNO
State: CALIFORNIA

PUBLISHED DATA
Lat: 36° 18.067
Long: 120° 18.133
Alt: 790.9
Designation: R 984
Marker Type: bench mark disk
Setting: in rock outcrop
Stability: Most reliable and expected to hold position/elevation well.

FOUND DATA
Lat: NA
Long: NA
Alt: NA

Found this one on private property. I believe the property is owned by an oil company and they probably would not have cared if I crossed the fence to look at the brass cap, but I didn't want to press my luck. I was obviously unable to take a new WGS84 reading on the cap. The location of the posts matched the history description.

The witness & guard posts.


The witness & guard posts relative to the road.

GU1758 - Y 662

County: FRESNO
State: CALIFORNIA

PUBLISHED DATA
Lat: 36° 17.783
Long: 120° 18.117
Alt: 763.2
Designation: Y 662
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.

FOUND DATA
Lat: 36° 17.760
Long: 120° 18.125
Alt: NA

Found it as described and in good condition, with the exception that the 'Y662' designation has been ground off. Enough history descriptions were available to verify it. Recent survey work in the area made location easy. Orange paint and flagged lath pointed right to it. About 180 feet north of the brass cap, a section corner monument known as a Scott McKay Monument can be seen. Scott McKay was the county surveyor at the first quarter of the 20th century and this is a good example of the type of monument he typically set. Original coordinates (NAD83) off by about 145 feet when in WGS84 mode. WGS84 coordinates found by 13.5 minute occupation with 4 strong satellites, 2 weak satellites and 1 WAAS satellite.

The designation was ground off but there were enough historic ties to verify the monument.


The mark and the GPSr.


The view southwesterly down State Route 33, aka The Coalinga/Mendota Highway.


The view westerly across State Route 33, aka The Coalinga/Mendota Highway.


Scott McKay Monument. Scott McKay was the elected Fresno County Surveyor in the early 1900's. This is one of the monuments he set as a section corner.


A Junior Benchmark Hunter at work.