LAS VEGAS (AP) — Drilling a third Las Vegas drinking water supply line to the Lake Mead reservoir has hit another snag, this time in a connector tunnel.
The Las Vegas Review-Journal reports that Southern Nevada Water Authority officials are blaming unpredictable geology for unexpected amounts of water seeping into the area where the half-mile-long tunnel is being drilled 480 feet underground,
The authority board on Thursday added almost $5 million to the tunnel cost, and pushed back the target completion date about seven months, to January.
But they say it shouldn’t further delay completion of the overall $800 million project, which is already running about 20 months behind schedule.
Las Vegas depends on the Colorado River reservoir for about 90 percent of its drinking water supply.