The Breakline vectors were developed from the LiDAR points to define hard and soft breaklines, mostly hydrography, in the terrain surface, as part of the Fond Du Lac County 2011 lidar
The 2011 breaklines dataset contains the hydrographic breaklines necessary for terrain surface development. This dataset establishes the deviation parameters for the development of derivative terrain data. File formats include: ESRI shapefile and AutoCAD DWG format.
ground condition
To be determined by client.
160 S Macy St
The file parameters of all the data are correct.
Data is consistent throughout the dataset.
The bare earth point data covers all of the Fond Du Lac County, WI project area with no gaps or omissions.
All map products will meet ASPRS Class II accuracy standards. The horizontal and vertical coordinates shall be referenced to the County coordinate system (NAD83 in Feet) and NAVD88
Based on tests conducted by staff from Ayres Associates: Survey grade elevations were taken in the project area in five different types of cover. These elevations were compared with the LiDAR terrain elevation. RMSE results: Overall: 0.343
Breaklines for this project utilized a process called Lidargrammetry. Lidargrammetry involves manipulating the LiDAR data's intensity information to create a metrically sound stereo environment. From this generated "imagery" dependable breaklines can be photogrammetrically compiled. This capability allows for high-accuracy terrain data from LiDAR without supplemental imagery.
Internal feature number.
ESRI
1802 Pankratz Street