Name: DEM_3M_I
Display Field:
Type: Raster Layer
Geometry Type: null
Description: This data set represents a digital elevation model (DEM) of the land surface of Iowa, in the UTM projection, Zone 15, NAD83 horizontal datum, with elevation in centimeters NAVD 88 vertical datum. The DEM has a horizontal resolution of 3 meters and was aggregated from one meter resolution elevation data from the state of Iowa's LiDAR program. The aggregation process uses a 3x3 pixel moving average window, which helps to smooth out noise in the one meter data, but also softens sharp edges of landscape features such as ditches and ridges, which may be undesirable for some purposes. The DEM was then Integerizied to shrink the size of the file, so final units are in centimeters. Water features sometimes have a triangular appearance due to lack of lidar returns over water and should be ignored.
Copyright Text: Iowa Department of Natural Resources
Default Visibility: true
MaxRecordCount: 0
Supported Query Formats: JSON, geoJSON, PBF
Min Scale: 250000
Max Scale: 0
Supports Advanced Queries: false
Supports Statistics: false
Has Labels: false
Can Modify Layer: false
Can Scale Symbols: true
Use Standardized Queries: true
Supports Datum Transformation: true
Extent:
XMin: 201956.73227618542
YMin: 4470498
XMax: 746000.7322761854
YMax: 4838709
Spatial Reference: 26915
(26915)
Drawing Info:
Advanced Query Capabilities:
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Supports OrderBy: false
Supports Distinct: false
Supports Pagination: false
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: false
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false
HasZ: false
HasM: false
Has Attachments: false
HTML Popup Type: esriServerHTMLPopupTypeNone
Type ID Field: null
Fields:
None
Supported Operations:
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