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Thank you for the comments. We have used Darcy's law to determine the flow for large shaft. I appreciate the informed responses.

The only information provided was that during the boring activity there was a minor seep at 25' below grade. They drilled 40' of rock but did not provide any data regarding groundwater flow from the rock. The boring log indicates they finished boring the same day. So I assume time of 8 hours...

Good Point on the volume vs radius. I will look at gpm to compare rate of uplift. OK Thank you

Question: If a 6" diameter soil boring 135' deep that is generally dry during excavation down to rock has water rise up to 35' below grade in 8 hours, how fast would the water rise up if a 4' diameter drilled shaft is installed at the same location? Would the rate of rise be the less, the same...