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Where can I find info on this benchmark?


Lacomo

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If you had a Latitude and Longitude we could search for it in the NGS database otherwise;

 

Here is what I could find searching by the stamping on the disk. Seems no ERA 1278 shows up in the NGS db but I assuming this is still in Missouri?

 

|Dist|PID...|H V|Vert_Source|Approx.|Approx..|Stab|Designation

|----|------|- -|-----------|-------|--------|----|-----------

|....|JD1570|. 2|88/ADJUSTED|N380330|W0933826|C...|ERA 1273

|....|HD0103|. 2|88/ADJUSTED|N373939|W0922151|C...|ERA 1287

|....|HD1075|2 .|29/SCALED..|N375430|W0922223|....|ERA 1445

|....|HD0044|2 2|88/ADJUSTED|N375238|W0922228|C...|ERA 1446

|....|HD1041|2 .|29/SCALED..|N375318|W0921456|C...|ERA 1450

|....|HD1040|2 .|29/SCALED..|N375319|W0921457|D...|ERA 1450 OFFSET

|....|HD0143|2 2|88/ADJUSTED|N374701|W0921610|C...|ERA 1452

|....|HD1086|2 3|29/LEVELING|N374507|W0921846|C...|ERA 1453

|....|HD0131|. 2|88/ADJUSTED|N374831|W0922115|C...|ERA 1455

|....|HD0137|. 2|88/ADJUSTED|N375053|W0922217|C...|ERA 1456

|....|HD0155|. 2|88/ADJUSTED|N374453|W0922139|C...|ERA 1457

|....|HD0086|. 2|88/ADJUSTED|N374601|W0922443|C...|ERA 1460

|....|HD1045|2 3|29/LEVELING|N373656|W0920424|C...|ERA 1468

|....|KD0121|. 2|88/ADJUSTED|N392937|W0923949|C...|ERA 2105 

 

The U.S. Geological Survey (USGS), an agency in the Dept. of the Interior has the responsibility for producing our national topographic maps. They completed the monumental task of complete national mapping of the 1:24,000 scale map series (about 55,000 maps) in the early 1990's. USGS would often set survey monuments to help "control" the map. Maps are produced from aeronautical photos mosaiced together. In order to provide accurate location, orientation, scale and elevation to a flat map of a curved surface, it is required to have numerous points that can be identified on the photographs for which the coordinates/elevations are well known. The marks set by USGS were a vital part of this operation. In the days when mapping surveys were conducted primarily by line-of-site methods, these marks helped save money by helping to ensure a network that cartographers could rely on for mapping update procedures. With the rapid developments in surveying and mapping technology, especially GPS, USGS sees little need to setting new marks or maintaining the old networks. Unfortunately the data for tens of thousands of these marks set by USGS were never submitted to NGS for inclusion in the National Spatial Reference System. Due to major reductions in staff and the changing nature of mapping requirements, it is highly unlikely that USGS will ever automate these data.

 

The Denver ESIC (at the address shown below) has information on USGS

geodetic control (bench marks and survey control) in the following areas:

 

Alaska, Arizona, Colorado, Idaho, Montana, Nevada, New Mexico, Texas, Utah,

Wyoming, California, Hawaii, Oregon, Washington, American Samoa, and the

Trust Territories; is available from:

 

Denver-ESIC

U.S. Geological Survey

Box 25286, Building 810

Denver Federal Center

Denver, CO 80225

 

Phone: 303-202-4200

Fax: 303-202-4188

E-mail: infoservices@usgs.gov

 

For all other U.S. areas, contact the Rolla ESIC:

 

Send them this photo of the disk and an approximate latitude and longitude to make it easy for them to search the reams of paper files. You should be able to get that with Google Earth. Don't forget to give them a mailing address to forward the info!

 

Rolla-ESIC

U.S. Geological Survey

1400 Independence Road, MS 231

Rolla, MO 65401-2602

 

Phone: 573-308-3500

Fax: 573-308-3615

E-mail: mcmcesic@usgs.gov

Edited by Z15
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I see it on the USGS map as a triangulation station, near Pease, Mo.

http://www.topozone.com/map.asp?lat=37.496...size=l&s=25

The coords are 37° 29' 47"N, 92° 37' 48"W (NAD83/WGS84)

 

Nice area. Used to fish the Gasconade River as a kid.

 

~ Mitch ~

 

Thar would be it Mitch. My nephew bought the house and old Store Building there at Pease Mill. It's on the Osage Fork of The Gasconade River. Thanks a lot...Bob

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Is this the location of the mark? Here's the same spot in Google Maps.

 

If so, it may be both a horizontal and vertical control point. There doesn't appear to be anything in the NGS database nearby, so your best bet, as described above, is to order the info from USGS. You can also log it on Waymarking if you'd like.

Edited by Holtie22
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lacomo - The USGS description for this mark states:

 

Pease, in SW1/4 SW 1/4 sec. 7, T. 32 N., R. 15 W., 7 ft S. and 4 ft E. from NE corner of concrete block store building, in concrete post; standard tablet stamped "1278 ERA 1935 1089"

 

The USGS determined position and elevation are:

NAD 27 N37-29-47.4, W92-37-47.7

Missouri Central Zone (U.S. Survey Feet) N = 606,495

E = 462,310

NGVD 29 elevation = 1089.557 ft.

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lacomo - The USGS description for this mark states:

 

Pease, in SW1/4 SW 1/4 sec. 7, T. 32 N., R. 15 W., 7 ft S. and 4 ft E. from NE corner of concrete block store building, in concrete post; standard tablet stamped "1278 ERA 1935 1089"

 

The USGS determined position and elevation are:

NAD 27 N37-29-47.4, W92-37-47.7

Missouri Central Zone (U.S. Survey Feet) N = 606,495

E = 462,310

NGVD 29 elevation = 1089.557 ft.

Thank you Sir, I appreciate it.

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