Photo Interpretation Key - Southwest Florida Water Management ...

7.3 CLASSIFICATION CODE: 7400
Level I: Barren Land
Level II: Disturbed
Minimum delineation area: 5 acres (1 acre if found within irrigated agriculture)
Disturbed lands are those areas which have been changed due primarily to human
activities other than mining. In Florida, these areas may be rather extensive and often
appear outside of urban areas.
Note that there are many similarities between 7400 and 1900. It can be very difficult to
determine which code to use in many situations. Typically, the best way to determine
the accurate code will be to observe the surrounding land cover. Typically areas of
disturbed land around new housing developments, construction areas, in urban areas, or
near the urban fringe should be coded 1900. Disturbed land that you cannot determine
the future use and there is no noticeable improvement evident should be determined
7400.
RECOGNITION FEATURES:
Represents a variety of situations where soil and/or substrate has been altered or
removed by human activity.
Characteristically white signatures or white signature with mottling of
regenerating vegetation.
Ground looks scraped and worked, usually angular or geometric boundaries.
May be evidence of old machinery, but abandoned, or no evidence of cause.
Examples include: Barrow areas, spoil areas.
Page 160 of 173 Photo Interpretation Key for Land Use Classification Jan. 15, 2010