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To convert from PLSS to GPS, see Legal Land Converter
We did find data on Texas historical measurements from Spanish land grants at the History of Texas Public Lands. Stephen F. Austin's early surveying contracts required that he use the vara as a standard unit. The vara can be seen in many deeds as late as the mid to late 1900s. Early grants regularly included a league and a labor, so on old maps areas of 4428 acres and 177 acres are signs of grants made before Texas independence and for some time after, even up to distributions of land to Confederate veterans.
- vara : length = 33 1⁄3 inches. 1 yard = 1.08 vara.
- league : area = 5,000 varas squared. About 4,428.4 acres (1,792.11 ha).
- labor : area = 1 million square varas. About 177.1 acres (71.67 ha).
- league : area = 25 million square varas. About 4,428.4 acres (1,792.11 ha).
Wells and Leases
The UT Bureau of Economic Geology (BEG) has a database for samples from cores plus well logs. NPL regularly has specimens derived from these cores at depth. The BEG site does not normally provide GPS coordinates for samples. However, if you can find a well log for the appropriate well, they often do have GPS data. Barring that, once we have gone through everything we will accumulate a list and BEG will track these down.
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