CARSON CITY, Nev. (AP) — Could tiny snails found in isolated, high desert springs along the Nevada-Utah line scuttle plans to pump billions of gallons of water to Las Vegas?

That’s the thrust of a lawsuit filed by an environmental group that claims four species of springsnails could perish if Southern Nevada Water Authority is allowed to build a massive pipeline and pump groundwater from rural areas to quench the thirst of Nevada’s gambling metropolis.