Water Leak

Well, looks like there's a water pipe in the ground outside the house that's sprung a leak. Every time I run the water around here enough to set the well pump running, water comes gushing in through a crack in the basement wall. I mean gushing like a faucet that's been turned on. It keeps up till the water tank in the basement fills up and clicks off, then within a minute or so the water pouring in through the crack trails off and stops.

I'm using as little water as possible around the house. No dishwasher, no washing machine for the duration. Am afraid that by the time this one is resolved, the front yard will have to be dug up.