HoCo2ft_Contours
vector digital data
The lidar base .img and .las data was provided to Howard County in 2019 by USGS. Data were flown, aquired, assesed for accuracy by FUGRO USA Land Inc. in Dec 2018. Contours were produced using the .img digital surface model provided to Howard County by USGS in which breaklines were enforced from ground lidar data and processed using Global Mapper Contour Tools with minimal simplication in order to provide the least allowable simplicity of contour line and highest detail of terrain over the entire County. Self closing contours of less than 20 ft were removed. Further quality control, edits to remove intersecting contours, dissolve any overlap, and edge matching were performed using ArcGIS Pro, and ArcGIS desktop with the Data Reviewer Extension. The Contour data has Major Index Contour and Minor Contour Interval attribution as well as elevation of each contour line. The Contour data was subjected to quality control review by KCI Technologies using Data Reviewer and manual review by Howard County Survey Team. All LiDAR and base data were provided with appropriate metadata, aquisition, accuracy reports by FUGRO for generation of 2 ft contours. All detailed accuracy reports regarding the base data can be reviewed by request.
This 2ft topographic contour data was developed for Howard County Department of Planning by KCI Technologies Inc. in January of 2021.
-77.190723
-76.682905
39.377682
39.096761
None
elevation
contours
Planimetric
2 foot contours
2018
None
Copying, modifying, distributing, and performing analysis on the data, even for commercial purposes, is allowable. KCI makes no warranties about the data, and disclaims liability for all uses of the data, to the fullest extent permitted by applicable law.
KCI Technologies, Inc.
Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9270
Vector
String
124160
NAD 1983 2011 StatePlane Maryland FIPS 1900 Ft US
38.3
39.45
-77.0
37.66666666666666
1312333.333333333
0.0
coordinate pair
0.0003280833333333333
0.0003280833333333333
foot_us
D NAD 1983 2011
GRS 1980
6378137.0
298.257222101
HoCo2ft_Contours
OBJECTID
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
Esri
Coordinates defining the features.
NAME
LAYER
Elevation
ORIG_FID
SHAPE_Length
Length of feature in internal units.
Esri
Positive real numbers that are automatically generated.
20210215
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
local time