A plummeting frost line has made as many as 20 percent of fire hydrants inoperable, prompting the Haines fire department to consider new response procedures.

Meanwhile, municipal water customers are advised to set aside some jugs of water for possible interruptions of service, and the Haines Borough has told some Skyline Estates residents to leave taps running to avoid freezing in lines that pass through rocky soil at higher elevations.

Prolonged cold and a dearth…