2002-10-27

HR0492 - FRIANT

County: MADERA
State: CALIFORNIA

PUBLISHED DATA
Lat: 37° 00.081
Long: 119° 44.064
Alt: 513
Designation: FRIANT
Marker Type: triangulation station 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: 37° 00.082
Long: 119° 44.068
Alt: NA

Found it at 08:10, 27 October 2002. Found it as described and in good condition. It was found in a 12 square monument, 8 up. The witness post was in place. This benchmark (along with HR0493 found 66' south) is on private property. The photos and GPS occupation were taken from the fenceline, about 10' west.

Original coordinates (NAD83) off by about 20 feet when in WGS84 mode. WGS84 coordinates found by 6 minute occupation with 8 strong satellites and 1 WAAS satellite.

The mark and witness post.


The mark and witness post with the GPSr at the fence.


View northerly towards the chicken ranch.


View easterly. The top of Millerton Dam can be seen in the distance.


The mark and witness post in relation to the fence and the road.


The view southeasterly. HR0492 can be seen in relation to HR0493, about 70 feet south.

HR0493 - X 690

County: MADERA
State: CALIFORNIA

PUBLISHED DATA
Lat: 37° 00.071
Long: 119° 44.059
Alt: 512.1
Designation: X 690
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: 37° 00.071
Long: 119° 44.063
Alt: NA

Found it at 08:10, 27 October 2002. Found as described and in good condition, with the exception of the setting. It is described as being set in a round concrete monument. It was found in a 6 square monument, 12 up. The witness post was in place. This benchmark (along with HR0492 found 66' north) is on private property. The photos and GPS occupation were taken from the fenceline, about 10' west.

Original coordinates (NAD83) off by about 20 feet when in WGS84 mode. WGS84 coordinates found by 5 minute occupation with 8 strong satellites and 1 WAAS satellite.

The mark and witness post.


The mark and witness post with the GPS at the fence.


View northerly with the chicken farm in the distance.


View easterly. The mark and witness post in relation to the road. The top of Millerton Dam can be seen in the distance.


The view southeasterly. HR0493 can be seen in the distance about 70 feet south of HR0492.

HR0648 - A 691

MARK NOT FOUND

County: MADERA
State: CALIFORNIA

PUBLISHED DATA
Lat: 37° 00.633
Long: 119° 47.600
Alt: 459.6
Designation: A 691
Marker Type: bench mark disk
Setting: light structures
Stability: Mark of questionable or unknown stability.

FOUND DATA
Lat: NA
Long: NA
Alt: NA

This intersection has been rebuilt since the 1970's, and there is evidence that the box culvert has been bebuilt as well. There is no visible cap in the top of the box drain that exists on the southwest corner of the intersection, however, from a quick, ten-minute visit of the site, it cannot be determined if the cap still remains or not. It may be buried; most likely DESTROYED.

View northeast from the southwest corner. The existing concrete drainage box can be seen in the foreground. No cap exists on it.