RTN expert Gavin Schrock provides everything you need to know about network-corrected real-time GNSS observations.
Click Here to begin the series,
or view the Article PDF's Here
Test Yourself
Got Answers?
Test your knowledge with NCEES-level questions. Start HERE
Meet the Authors
Check out our fine lineup of writers. Each an expert in his or her field.
A 310Kb PDF of this article as it appeared in the magazine—complete with images—is available by clicking HERE
Years ago, making the transition from strictly construction surveying to land surveying, I took employment with a tactless, rude and crusty old surveyor that really had a massive heart of gold. This fellow suffered from an affliction that I have unfortunately witnessed far too many times in our profession: optimistic procrastination. We all know how it goes. The client calls and the immediate response is "Sure, we can get started on Thursday." All along, the surveyor knows he is backed up two to three weeks, and it'll be at least a week before research can even be started. He just wants to secure the job.
There was a ritual in our company, and to this day I've never quite figured all of the many angles of the ethics involved. Once the poor, waiting client reached the ultimate level of frustration, I would be sent out solo to placate the individual. This I did by merely visiting the site and indiscriminately tying orange flagging on absolutely everything visible from the street, including dogs and cats should they not be alert. Strange the satisfaction of the client this simple act occasioned.
Now, let's leave the past and go back many more years to the past, past. In 1779 and 1780 the gentlemen Dr. Thomas Walker and Colonel Daniel Smith, both of Virginia, ran the division line between the then states of Virginia and North Carolina. North Carolina appointed Richard Henderson and William B. Smith to watch out for her interests. Henderson and Smith quit early on leaving Walker and the other Smith to complete the task. (For a little perspective, 1780 was the year Benedict Arnold deserted to the British at the time of our deep involvement in the American Revolution.)
The survey began in the mountains of what is now East Tennessee and proceeded west along the southern line of what is now Kentucky. Their original instructions were to cease surveying upon reaching the Tennessee (Tenasa) River. The land west of that river was recognized as sovereign of the Chickasaw Tribe.
Colonel Smith kept a fairly detailed journal over the course of the survey. On Thursday, March 23, 1780, he wrote how at 10 o'clock he was joyfully surprised to see the Tenasa River. After nearly eight months out, the terminus of this 36-degree, 30-minute line of latitude had finally been met. [Author Note: I will write more about this at a later date.] On the 24th, the party headed home. His entry for April 7 says "horses not all found. Received a letter from the Governor to go to the Falls of the Ohio [present day Louisville, KY] on a particular business . . ." The official report of the survey by Walker and Smith states "When we had returned homewards about 160 miles, we met with orders from his excellency, the Governor, to do another piece of service, which we suppose he has made you acquainted with." Thus, a mystery begins. What possibly could be so important a task as to detour the gentlemen from their return after so much time out suffering the hardships they had endured?
Part of the orders was to rendezvous with Colonel George Rogers Clark (Billy's older brother by 18 years) on the Ohio River. The next few weeks were spent recruiting a guard to go to the Falls, settling various accounts in conjunction with the State Line survey and more traveling by land and waterways. On April 23, Smith cut his foot, an injury he had to cope with for the remainder of the assignment. Arriving at the Falls on the 25th, they found they had missed Colonel Clark by 11 days; he had gone downstream to a new fort under construction on the Mississippi River.
Smith and the others accepted an offer to travel by flatboat with a Captain Killer or Killen. Raining and misting much of the time, the leisurely float was anything but enjoyable. Nursing his now infected foot, Smith writes "If paper was plenty I would attempt a description of our unfavorable situation with a Xantippe of a Landlady, something like Petruchio of Shakespear or Nabal for a Landlord their dirty children leaky boat, drunkennes &c. But I am by no means equal to the task." On May 3, they eventually found Clark at the old Fort Jefferson, a site on the Mississippi River about five miles south of the mouth of the Ohio River. While in this vicinity, over the next week Smith's entries tell of running lines to determine the width of the river and observing (for latitude) all day on May 10. On May 11, they determined they were 3 minutes and 19 seconds into Virginia (north of the 36-degree, 30-minute line). Then "from this point of the island, we ran east to the main land where I marked a buck eye elm and sugar tree, then south 3 miles, 265 poles; thence west 106 poles to the river, 96 of which we marked. New land is forming here, nothing to mark but cotton trees . . ." That night, they "lay in the wet without fire," beginning the journey home the next morning. Why mark the line from the Mississippi River east for 1500 feet, then load up the canoe and head home?
In a letter written 35 years later, the now General Smith finally shed some light on the mystery. Smith wrote to a Judge Humphreys: "On our arrival at the French Lick [present day Nashville] we received a letter from the Governor of Virginia, directing us, as the Spanish Governor Galvez was then conquering the Natchez country and the adjacent parts from the British, to go to the Falls of the Ohio to Colonel Clark and apply to him for a guard; descend the Ohio and Mississippi Rivers to the proper latitude and there make marks and give all the publicity to the claims of Virginia that far south. This duty we performed and then returned home."
Thomas Jefferson, the new Governor of Virginia, who had replaced Patrick Henry the summer of 1779, penned a letter to Smith and Walker on January 29, 1780. In it he said in part: "As we propose this Spring to take possession of and fortify some posts as near the mouth of Ohio as the ground will admit, it becomes very important for us to know the exact latitude thereabouts . . . You will first find the point at which our Line strikes the Mississippi or Ohio, and fix it by some lasting immoveable natural mark if there happen to be any on the spot, or if not, then by its course and distance from some such natural mark, noting such course as corrected from the errors of variation, and the distance reduced to horizontal measure." Jefferson closes with an offer no 18th century Virginian could refuse: "The disappointment will therefore be of the greatest moment should you decline the Service."
Sixteen years later as President, Jefferson issued much the same order to Andrew Ellicott to be carried out in the same vicinity of the confluence of the Ohio and Mississippi Rivers. This was to be accomplished by Ellicott en route to what is now Alabama. That expedition eventually ended with the survey of the International Boundary between Spain (Florida) and the United States (Georgia and Alabama).
...there make marks and give all the publicity... So, upon orders of Governor Jefferson, the honorable Smith was told to go out and in effect, tie orange flagging anywhere and everywhere any Spaniard floating up or down the Mississippi River could not help but see. One might still question the ethics of this act, but as illustrated, there at the least, is precedence.
Resources
Daniel Smith's journal and Walker and Smith's "Official Report to the Virginia House of Delegates" as found in the documentary Four Steps West, James W. Sames III, Versailles, KY, 1971.
Durham, Walter T. Daniel Smith: Frontier Statesman. Gallatin, TN, Sumner County Library Board, 1976.
Items in the photographs are from the author's personal collection.
C. Barton Crattie holds a BFA degree from Murray State University and is a licensed surveyor in Georgia and Tennessee. He currently serves on the Board of Directors for the Surveyors Historical Society.
A 310Kb PDF of this article as it appeared in the magazine—complete with images—is available by clicking HERE
Editorial: America the Beautiful
After a rough wagon ride up to Pikes Peak in 1893, it was the view from the top that inspired Katharine Lee Bates to write a poem that became known as "America the Beautiful." Later set to music by Samuel Ward, its images have become part of our national conscience. Few there are who cannot sing at least one stanza of the four. It's no secret to .... Read the Article
Brass Caps and Bandanas—Monumenting Anaktuvuk Pass
The Inupiaq are Eskimo people that live along the Arctic Ocean coast of Alaska's North Slope. In the last few hundred years a nomadic splinter group of the Inupiaq known as the Nunamiut moved inland away from the coast to follow the Caribou migrations and settled at Chandler Lake and the Killik River in the .... Read the Article
GIS Mapping—Campus Style
When Craig Moore switched from the academic side of Virginia Tech in October 2004 to become an engineer for site development in the campus' Facilities Department, he inherited a GIS that was not easily updated, and maintaining it was a problem. As a result, "it trailed off to nothing," he said. At that time the system focused on ... Read the Article
Alleviating Poverty in the Developing World—Leveraging Property Rights with Geospatial Technology
According to renowned economist Hernando de Soto, the inability of persons worldwide to gain formal recognition of their real property rights is a major stumbling block to alleviating poverty. This lack of formal legal recognition of property rights is ... Read the Article
A Dividing Line Brings Us Together
Oh, the lines. The shortest distance between two points? A line pulled to ring a bell? A colonial boundary between two long forgotten counties? Lines of dialog in a television documentary? The lines marked of legal secession from an illegally seceded state? Soup lines during the depression? A line connecting a hook to .... Read the Article
Conference Review: Leica HDS 2009—Simplifying the Complicated
When GPS technology first began to filter into survey work, it was necessarily complex, depending, as it did, on satellites, atomic clocks, relativistic equations, and the like. Surveyors took this in stride and accepted that working with such arcane magic would always require expensive equipment, lengthy training, and endless hours of .... Read the Article
FeedBack
Clarification Regarding 2009 Manual: I found the article "Why a Federal Surveying Manual is Relevant to the States," by Steve Hansen intriguing [Sept. 2009]. I interpret the author to mean that the new manual soon to be published (2009) is binding on all recovery, restoration, and retracements of the Public Land Survey regardless of the date of ... Read the Comments
Vantage Point: Going Out with a Sigh
The story I'm about to relate took place over the space of seven months, and the outcome ratcheted up so much emotion that it was impossible to write at its last turning point. On October 1, 2009, the backhoes revved up their engines at 8 A.M. sharp, the earliest time allowed for such noise in my township, and La Ronda began falling to ... Read the Article
Share this page with your favorite social networks!
A “Fixed” Fight: A peek inside one construction expert’s campaign to make fixed-price contracts and cost containment the industry’s new normal: Huge cost overruns and missed deadlines have long been the accepted norm for construction project operations. But as the economy struggles to fully recover, construction expert Barry LePatner stresses that these precepts can no longer define the nation’s most inefficient industry. He provides a proposal for hardwiring construction cost containment into future projects.
Reach our audience of Professional land surveyors and Geo-Technology professionals with your career ad. Feel free to contact us if you need additional information.