The Bare Earth DTM was developed from LAS points and breaklines collected from a LiDAR flight flown in the Fall of 2011, as part of the Fond Du Lac County 2011 WROC project. The DTM is used to develop a TIN (Triangulated Irregular Network). 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.
The 2011 two-foot contours were developed as a derivative product for use in general surface modeling and depiction. 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
A triangulated irregular network (TIN) model was created from the Bare Earth LAS and breaklines. The TIN was processed to create two-foot contours.
Internal feature number.
ESRI
1802 Pankratz Street