This feature class represents contoured data of geologic features or other parameters such as geochemical data. Contoured surfaces may be displaced by faults or other features. Topology rules for contours do not allow intersections, but exceptions will occur with vertical gradients.
| Field Name | Field Alias | Length (text fields) |
Field Type | Field Value | Default | Allow Nulls? | Attributes / Examples | Description / Notes |
|---|---|---|---|---|---|---|---|---|
| FGDC_code | " | 16 | String | CVD variable | [null] | TRUE | 30.3.12 | FGDC geologic symbol reference number. |
| CntLnClass | ContourLineClass | 50 | String | variable | unspecified | FALSE | unspecified, Structure, Water table, Potentiometric surface, etc | Feature or property being contoured. |
| Confidence | " | 16 | String | CVD fixed | [null] | TRUE | unspecified, certain, probable, uncertain | Confidence regarding the existence/identification and position of this feature. |
| CntValue | ContourValue | Single | variable | 0 | TRUE | 7000, 7100, 7200. etc. | Numeric parameter value for contour | |
| ValueUnits | " | 8 | String | CVD fixed LengthUnits |
[null] | TRUE | [null] meters, feet, etc. see: LengthUnits |
units of contoured data |
| IndexCont | IndexContour | Short Integer | boolean | 0 (FALSE) | FALSE | TRUE=1, FALSE=0 | Used to specify heavy contour line weights -- every even 100 feet for example. | |
| Closed | " | Short Integer | boolean | 0 (FALSE) | FALSE | TRUE=1, FALSE=0 | Used to indicate a closed contour that should be hatchured. | |
| CntLnType | ContourLineType | 50 | String | variable | [null] | TRUE | unspecified, Dakota Sandstone, shallow aquifer, deep aquifer, etc. | Contour line type of the specifed class. |
| CntLnSub | ContourLineSubtype | 50 | String | variable | [null] | TRUE | unspecified, Historic data, Mixed data, etc. | Contour line sub-type of the specified type. |
| CntDatum | ContourDatum | 8 | String | CVD variable | [null] | TRUE | see: VertDatum | Datum of contoured data. |
| DsplyScale | DisplayScale | Long Integer | CVD fixed | 24000 | TRUE | see: DisplayScale | Denominator of display scale: display feature at scales larger than number specified (=< denominator). Zero indicates data that should never be displayed. | |
| SourceID | " | 128 | String | variable | [null] | TRUE | "Smith, 1999a" | Feature level metadata (who mapped this) |
| Comments | " | 255 | String | variable | [null] | TRUE | Comments about this particular feature. |