Attribute/Attribute Value
Each feature requires domain codes to be entered into the attribute table for the feature class (Elevation-Derived Hydrography Feature type description, associated geometry, and use classification table in the Elevation-Derived Hydrography Data Acquisition Specifications 2023 revision A2). See “Field Definitions and Domain Values for Attributes” section for more information on Elevation-Derived Hydrography code definitions.
Delineation
The limit of artificial path is the connection between the inflow and outflow points of an in-line polygon, the line through a head or terminal open waterbody that connects to the inflow (for terminal), or the outflow point (for head).
Representation Rules
When delineating a feature, it must be created with the appropriate geometry, either point, line, or polygon, which is determined by the size of the feature or the length along different axes of the feature (table 1).
Special conditions: none.
Table 1. Artificial Path representation rules.
Kind of feature object |
Area |
Shortest Axis |
Longest Axis |
0-dimensional (point) |
- |
- |
- |
1-dimensional (line) |
- |
greater than 0 |
- |
2-dimensional (polygon) |
- |
- |
- |
Data Extraction
Capture Conditions
Artificial paths shall be placed in all polygons except isolated lake/ponds, and isolated basins (lake/ponds, and basins not connected to the stream network). Artificial paths shall represent the shortest path from the inflow to the outflow without crossing through banks or islands.
Attribute Information
FClass 1— Hydrography feature defined within the collection criteria of the elevation-derived hydrography specifications.
FCode 55800—Artificial path (abstraction to facilitate hydrologic modeling through open waterbodies).
EClass 2— Linear hydrographic features that follow the elevation surface.
Source Interpretation Guidelines
None.