| Clinton County, Ohio |
| Original Status: | 6 areas, 1 m. ENE, 1 1/2 m. NNW, and 3 1/4 m. NW of New Vienna (1190+ ft.) | |
| LiDAR Analysis Result: | 4 Potential Eliminations. |
Link to Trip Reports (cohp.org)
This area is located along Clark Road, north of State Route 350.
The original topo depicts a tiny 1090+ foot contour just west of Clark Road. The LiDAR DEM provides a maximum elevation for this area of 1189.4 feet. This value is comfortably below some of the other points in the county, so it does not appear to be a high point candidate.
 Aerial |
 Topo |
 LiDAR DEM |
This section of interest, located south of Levo Road and north of Leeka Road, contains four contours on the original topo of 1090+ feet.
The three small 1090+ foot contours, to the southeast of the larger contour, appear to be out of contention. The maximum elevations provided by the LiDAR DEM for these contours are as follows:
Eastern -- 1187.9 feet.
Southern -- 1191.7 feet.
Middle-ish -- 1191.3 feet.
The larger contour has significant rises above the 1190 foot level. However, a close look at the LiDAR DEM suggests that there are some data quality problems, resulting in small areas of spuriously high values inside of this area. The maximum elevation given by the DEM is 1200.2 feet, but this is likely too high. Examining the non-spurious contours, one can infer a maximum elevation for this area of around 1195 to 1196 feet -- perhaps as high as 1197 feet.
The absolute highest ground appears to be near the western corner of the forested area.
 Aerial |
 Topo |
 LiDAR DEM |
This area, while not in contention for the true high point, appears to raise above 1190 feet. Thus, it will be included in the analysis. This area is located along Bernard Road, just south of Leeka Road.
The original topo depicts a fairly large 1080+ foot contour in this area, while the LiDAR DEM data suggests that the area does exceed 1190 feet. A maximum elevation of 1192.9 feet is provided.
This value is still below some of the other points in the county. Also, the fact that the high contour is right on top of a house and its adjacent property might raise a question as to whether or not the ground was raised slightly. Either way, this point is not in contention, but is worth showing for completeness.
 Aerial |
 Topo |
 LiDAR DEM |
The final area is located along the Clinton/Highland County line, about two tenths of a mile north of State Route 28. Clinton County is northwest of the county line.
In this part of Ohio, roads, county lines, and property lines do not often run due north-south or east-west. This can make things a little bit confusing.
The original topo shows a 1190+ foot contour extending in from Highland County. The LiDAR DEM depicts a similar 1190+ foot contour, and shows that there is a clear rise right along the county line itself. The rise is not located in the field adjacent to State Route 28 -- it is across the fence line in the next field to the north. There is a farm road that leads north from State Route 28, and ends near the fence line. Heading west-northwest along the north edge of this fence line would lead to the highest ground.
The LiDAR DEM provides a maximum elevation of 1195.7 feet, but on the Highland County side. The highest elevation on the Clinton County side is 1195.6 feet. Thus, by definition, the point is a liner. What is also clear is that this area is extremely flat, and that a difference of 0.1 feet is essentially negligible as noise in the data.
To conclude -- it appears that only two of the original six contours are in contention for the status as the Clinton County high point. The larger of the middle areas should be visited, as should the far eastern area (the liner).
 Aerial |
 Topo |
 LiDAR DEM |
Link: Ohio LiDAR COHP Analysis main page.
Link: My COHP homepage.