New images from the U.S. National Weather Service in Brownsville shows the lake level at Falcon State Park is so dry that water wasn’t trickling out of the gates at Falcon Dam.

The reservoir is the main source of water for the Rio Grande Valley.

Water levels at the lake are so low that they were 10 feet below the level needed to flow from the dam, according to the NWS.

“The Texas share of the reservoir fell below 10 percent of the conservation pool - levels not seen since the period from 1996-2002 - and potentially on their way to record lows later this month with little to no rain in the forecast for the tributaries that feed both Amistad and Falcon Reservoirs,” the department stated in a social media post.

The low water levels have caused several Valley cities to announce several restrictions to conserve water. The water restrictions can be viewed online

“In addition to the low levels, grasses were completely brown in most of Starr and southern Zapata County, indicating the worsening drought,” the release stated.

An island north of the dam was visible due to the low water levels.