I'm working with data from Travis Texas, so I'm assuming that it's feet.
But where would I find the actual information for a well_depth attribute field that would tell me that it's in feet or meters?
metadata look for *.xml files... if there is no description of the data you might be guessing or use surrogates...if the wells in that area are on average 100 ft and you are seeing depths of 30ish then the depths are probably in meters. In the absence of metadata and educated guesses, ask the source of the data
Retrieving data ...