Elevation-Derived Hydrography READ Rules: Lake/Pond
A standing body of water surrounded by land (Figure 54 and Figure 55).
Delineation
The limit of Lake/pond where Stream/river enters, or leaves is determined by the conformation of the land.
The limit of Lake/pond is the position of the visible edge of the waterbody (date of lidar collection).
Representation Rules
Delineate features as points, lines, or polygons based on their area or length along different axes (Table 27).
| Kind of feature object | Area | Shortest Axis | Longest Axis |
| 0-dimensional (point) | -- | -- | -- |
| 1-dimensional (line) | -- | -- | -- |
| 2-dimensional (polygon) | greater than 0 | -- | -- |
Special Conditions
None.
Data Extraction
Capture Conditions
For Elevation-Derived Hydrography feature collection, if Lake/pond is greater than or equal to 0.25 acres (1,000 square meters),
then capture.
Attribute Information
FClass 1—Hydrography feature defined within the collection criteria of the elevation-derived hydrography specifications.
FCode 39000—Lake/pond (a standing body of surrounded by land).
EClass 11— Polygon created using a hydroflattening breakline.
OR
FClass 1—Hydrography feature defined within the collection criteria of the elevation-derived hydrography specifications.
FCode 39000— Lake/pond (a standing body of water surrounded by land).
EClass 12— Polygon created from edited hydroflattening breakline on flattened elevation surface.
OR
FClass 1—Hydrography feature defined within the collection criteria of the elevation-derived hydrography specifications.
FCode 39000— Lake/pond (a standing body of water surrounded by land).
EClass 13— Polygon created for non-flattened waterbody features in the DEM.
Source Interpretation Guidelines
Do not capture dry lakes as Lake/pond (see Playa feature type, Appendix 1).
The minimum size for islands within Lake/pond is 0.12 acres (approximately 500 square meters).
For examples of islands and intermittently submerged islands that may be apparent on the elevation surface, see “Additional Elevation-Derived Hydrography Treatments and Elevation Specific Features” section.