They should be able to tell you how many gpm the aquifier will support. The well is 125' deep, I wonder how many feet of head pressure (what's the static water level in the well casing).

My 3/4 well pump was rated at 27 gpm.

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).