Barrow ditch.

[AAllan at AOL.COM]

<< the only work we have not consulted is DARE.  >>

Better consult it! The DARE entries for "barrow ditch" and "barrow pit" are
far too long to copy here, but briefly "barrow ditch"="barrow pit" 1 = a
roadside drainage ditch, chiefly West, esp Rocky Mts. There is also "barrow
pit" 2 = a place from which material for construction has been excavated, and
which, esp in the Gulf States, often fills with water."
- Allan Metcalf