wbf pls Posted May 20, 2007 Share Posted May 20, 2007 (edited) So I was looking for NGS monument JU0663 by the railroad in Bridgeport, NJ. The database description reads, "6.7 FEET NORTH OF THE NORTH RAIL, AT A SEMAPHORE, AND IN THE TOP OF THE SOUTHWEST CORNER OF THE CONCRETE BASE." I found this concrete base, raised about ten inches above the ground, about 24"x24" square. I approached it from its north side. On the side facing me somebody had spray painted "G 10." The southeast corner was also spray painted. The semaphore was gone. Oddly, there was no evidence that there was a disk there. Nor does it seem like there was enough space to have placed a disk there. I reached out over the concrete base with my camera and took a photograph to document the absence of a bench mark disk on the southeast corner of the base. Later that evening I downloaded the picture into my computer and what do I see? Beyond the edge is another concrete block flush with the ground with part of the disk visible over the edge of the raised concrete block. Edited May 20, 2007 by wbf pls Quote Link to comment
+Black Dog Trackers Posted May 20, 2007 Share Posted May 20, 2007 Wow! Well it's better seeing it in your own picture than months later in someone else's picture! Going back to take another picture? I guess it's possible that there's been some infill there and the semaphore was on a 2-step base with the bottom step now buried. Quote Link to comment
+Kewaneh & Shark Posted May 20, 2007 Share Posted May 20, 2007 Welcome to the forums WBF PLS. I've seen one similar to that, but I was lucky enough to find it and scratch my head while I was there. GT1581 was placed on the top of a curb on a bridge. Later on, the county decided that a curb was not enough to to keep cars out of the canal and placed a concrete barricade on top of the curb. They managed to cover part of GT1581, but they left enough uncovered that it can still be used. - Kewaneh Quote Link to comment
+shorbird Posted May 20, 2007 Share Posted May 20, 2007 You never know what you will find. Take a look at this one. Quote Link to comment
+A tapeworm Posted May 21, 2007 Share Posted May 21, 2007 ... the county decided that a curb was not enough to to keep cars out of the canal and placed a concrete barricade on top of the curb. They managed to cover part ... Lots of those in my area, including two a half mile apart: NF0458 and NF0440. NF0458 gets bonus points for Stupid Witness Post Tricks, too: Quote Link to comment
+Black Dog Trackers Posted May 21, 2007 Share Posted May 21, 2007 Stupid witness post tricks. ROFL Quote Link to comment
ArtMan Posted May 21, 2007 Share Posted May 21, 2007 It's a Witness Post! No, it's a Flood Gauge! For all I know, it's also a floor wax and a desert topping.... -ArtMan- Quote Link to comment
+Kewaneh & Shark Posted May 21, 2007 Share Posted May 21, 2007 It's a Witness Post! No, it's a Flood Gauge! For all I know, it's also a floor wax and a desert topping.... -ArtMan- But seriously.... this is the worst I've found: HS1188 was covered when they lifted the tracks over an existing bridge. High res pics can be seen HERE. - Kewaneh Quote Link to comment
andylphoto Posted May 22, 2007 Share Posted May 22, 2007 It's not just survey crews and highway departments and railroads that do stuff like this--apparently ALL professions will obscure survey markers! Consider RK0588. The photo is marginal as it was late in the evening, and I had forgotten my camera. I shot this one with my phone. The area had been logged, and they left a ten-inch tree was left right on top of this one. I could see enough of the disk to identify it. Quote Link to comment
Bill93 Posted May 22, 2007 Share Posted May 22, 2007 (edited) How much does the impact of a falling 10" tree change the elevation of a concrete post? But now I see that this is not an elevation benchmark. So if the tree hit square on the horizontal coordinates should still be good. Edited May 22, 2007 by Bill93 Quote Link to comment
AZcachemeister Posted May 23, 2007 Share Posted May 23, 2007 It's not just survey crews and highway departments and railroads that do stuff like this--apparently ALL professions will obscure survey markers! Consider RK0588. The photo is marginal as it was late in the evening, and I had forgotten my camera. I shot this one with my phone. The area had been logged, and they left a ten-inch tree was left right on top of this one. I could see enough of the disk to identify it. Apparently not everyone keeps a chainsaw in their recovery kit like me! Quote Link to comment
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