Updated at 5:30 p.m. Thursday: Revised to include update on dam's condition from a city spokeswoman.

Prestonwood Lake Dam in Arlington remains in the early stages of failure due to erosion, city officials said Thursday, a day after Mayor Jeff Williams issued an emergency proclamation in anticipation of possible flooding.

"Conditions have not changed," Arlington city spokeswoman Susan Schrock said, noting that water spilling out through soil around the dam had prompted city staff to monitor the situation.

1 / 3A pair of Arlington firefighters monitor Prestonwood Lake dam in northwest Arlington which was compromised by recent rains, Thursday, November 1, 2018. The City of Arlington has declared an emergency in anticipation of possible flooding downstream from the dam. The City has said, "It appears failure of the spillway may be imminent." Green Oaks Blvd, a six-lane divided street, and the Village Creek Waste Water Treatment Plant are in the drainage path less than a half-mile from the dam. (Tom Fox/The Dallas Morning News)(Tom Fox / Staff Photographer) 2 / 3The Prestonwood Lake dam in northwest Arlington has been compromised by the recent rains, Thursday, November 1, 2018. The City of Arlington has declared an emergency in anticipation of possible flooding downstream from the dam. The City has said, "It appears failure of the spillway may be imminent." Green Oaks Blvd, a six-lane divided street and the Village Creek Waste Water Treatment Plant are in the path less than a half-mile from the dam. (Tom Fox/The Dallas Morning News)(Tom Fox / Staff Photographer) 3 / 3The Prestonwood Lake dam in northwest Arlington has been compromised by the recent rains, Thursday, November 1, 2018. The City of Arlington has declared an emergency in anticipation of possible flooding downstream from the dam. The City has said, "It appears failure of the spillway may be imminent." Green Oaks Blvd, a six-lane divided street and the Village Creek Waste Water Treatment Plant are in the path less than a half-mile from the dam. (Tom Fox/The Dallas Morning News)(Tom Fox / Staff Photographer)

The dam, north of Lamar Boulevard and south of Northwest Green Oaks Boulevard in the city's northern area, is part of a private lake system.

Schrock emphasized that the public is in no danger. Instead, she said, the city is more concerned that downstream culverts at Northwest Green Oaks may be too clogged with sediment and debris to handle any runoff, which in turn could cause roadway flooding.

"In that case, there's potential for water to reach the boulevard," she said.

Heavy rains fell throughout Dallas-Fort Worth on Wednesday, and discovery of the dam's erosion prompted officials to post a notice on the city's website.

"It appears failure of the spillway may be imminent," it read.