John R. Sweet Co. 8562 JACKSON RIVER ROAD MUSTOE, VA 24468-2150 USA

Last Update: 30 October 2011

Topographic Mapping Services

We provide overlays for USGS topographic maps and orthophoto maps to show various types of geographic infomation, anywhere in Virginia or West Virginia.

• Outline of the drainage basin of a small stream, including calculation of its area.
• Line map of a road, trail, or stream, including calculation of its length and gradient or elevation gain / loss.
• Profile of a stream or road, showing graphically the above features.
• Line-of-sight profile from point A to point B, showing the relative height of intervening topography.
• Property boundaries, provided one corner can be located on the topographic or orthophoto map and the metes and bounds are available from a deed description or a survey — we do not do land surveying. We can locate points on the ground to the accuracy of a handheld GPS receiver, generally within about 30 feet, and transfer this data to a map.

The drainage basin of East Back Creek above 2800 ft elevation, Highland County, VA.
The area is 980 acres = 1.53 sq mi. This information is useful for estimating
flood flows if one wants to install a bridge or culvert, for example.



Profile across the East Back Creek valley from Lantz Mountain at left [3697 ft]
to Back Creek Mountain at right [3936 ft]. The distance is 1.74 miles.
This shows the relative steepness of the two mountains.
The maximum grade is 54% on Lantz Mtn and 46% on Back Creek Mtn.



What is that peak I see in the distance?
Line-of-sight profile from an overlook on Warm Springs Mountain [3275 ft]
to Paddy Knob [4489 ft], a distance of 14.3 miles.
We are looking slightly west of true north, a bearing of 352°.
The intermediate high point is Back Creek Mtn [3692 ft], 8.4 miles away.
The Jackson River valley is five miles distant and Back Creek about 11 miles.



Boundaries of a tract of land shown on an orthophoto map. One corner was located
accurately, then the survey lines were plotted using the metes and bounds
in the deed description, adjusted slightly to permit closure of the loop.
The perimeter is 3367 feet and encloses 7.15 acres.

Please contact us if we can help you with mapping issues of any sort.

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