Flags

Flag definitions for lithology and hydrostratigraphy. You can access this list in R at any time through the flags dataset.

Many of these flags indicate potential problems in the original data record on GWELLS. However, if you believe that the record is correct, but that the flag is incorrect, please open an issue and let us know what the problem is (which flag is incorrect and why) and with which Well (well_tag_number).

from and to fields refer to lithology_from_ft_bgl/lithology_to_ft_bgl and lithology_from_m/lithology_to_m fields

The middle letters (e.g., int in flag_int_missing) reflect the kind of data being flagged.

• int refers to a specific lithologic depth interval
• lith refers to a well’s entire lithologic record
• cat refers to the lithology categorization
• pos refers to the specific position of a category
• yield refers to the yield extracted from a lithologic record
• depth refers to well depths

Flag	Description
flag_int_missing	Interval is missing lithologic record.
flag_int_overlap	Interval overlaps the next or previous interval.
flag_int_gap	Interval has a gap between it and the next or previous interval.
flag_int_note	This first depth interval has depth values both to and from 0 (or NA) which marks possible notes made before the lithology records.
flag_int_overrun	Second or later depth interval has depth values both to and from 0 (or `NA). This marks an interval as a possible overrun, where the notes from a previous record have overrun onto the next line.
flag_int_shortform	Second or later depth interval has a from of 0 (or NA) and a non-zero (and non-missing) to. Often (but not always), this indicates that the record was entered in short hand, by omitting from and only inputing the tos.
flag_int_bottom	Bottom interval with zero depth. Either because to is 0 (or NA) or because to == from.
fix_int_bottom	Indicates whether the flag_int_bottom problem has been fixed here by adding 1m to the to bottom layer as well as to the depth of the well.
flag_lith_overruns	Well with at least one overrunning interval (flag_int_overrun with missing depths).
flag_lith_nodepths	All lithologic intervals have depths of 0 (or NA) in both from and to.
flag_lith_intervals	At least one flag present on at least one interval in this record.
flag_lith_missing	There are no lithologic records for this well.
flag_cat_bedrock	Interval where Bedrock occurs with any other primary term.
flag_pos_bedrock	A non-bedrock category occurs below a bedrock category.
flag_cat_boulders	Interval where Boulders occur with any other primary term.
flag_cat_missing	No categories were extracted from the cleaned lithologic interval.
flag_yield_mismatch	Lithology where there are both depths and yields, but the number of yield measures do not match up with the number of depth measures (thus yield and depths are NA). This only applies to Hydrostratigraphy.
flag_yield_digits	Lithology with extra digits which were not converted to a yield or depth. This only applies to Hydrostratigraphy.
flag_depth_missing	Well is missing depth.
fix_depth_missing	Indicates whether a flag_depth_missing problem has been fixed here by setting Well depth to the depth of the final interval.
flag_depth_mismatch	Well depth is not equal to the depth of the final lithology interval.
flag_yield_zero	Well yield is zero, but should probablyl be missing (NA)
fix_yield_zero	Indicates whether a flag_yield_zero problem has been fixed by setting Well Yield of 0 to NA.