A dam at a private lake in north Arlington appears close to failing, city officials said Thursday.
“It appears failure of the spillway may be imminent,” the city said in a statement. “While no flooding of residential structures is anticipated, Mayor Jeff Williams issued a proclamation Wednesday so that City staff may act to protect the safety of citizens and reduce damage to property and public infrastructure.”
Star-Telegram media partner WFAA had video showing water streaming over the spillway.
Arlington spokeswoman Susan Schrock said the dam was in the “early stages” of a collapse due to erosion. She said water was escaping through the soil and “spilling” over the side.
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Any mitigation is the responsibility of the private property owner of the lake. Firefighters were monitoring the situation.
If the dam fails, culverts downstream along Northwest Green Oaks Boulevard are likely to become clogged with sediment and debris, which could cause some roadways to flood, the city said. No homes are threatened around the lake or downstream.
The 3.5-acre lake has about a half-mile of shoreline and its depth is believed to be between 1 and 5 feet.
Crews would block the roads and clear debris if necessary.
Here’s raw video of the dam from WFAA: