About two dozen different emergency-response agencies were called out to the site.
The Sweeny Fire and Rescue Department first gave word of its request to help firefighters in Damon, Texas, just before 3:30 p.m.
In a Facebook post, Sweeny Fire listed several other departments in the county, including firefighters from West Columbia, Needville, and Brazoria.
Sweeny Fire has also updated the post with significant updates, including word of the fire jumping County Road 18 but staying east of Highway 36 at 4:24 p.m.
In addition, fire officials said they have "apparatus" positioned to protect structures along County Road 15, which is north of the burn area.
By 5 p.m., Sweeny Fire said the head of the fire was stopped, by which point the Lake Jackson and Richwood volunteer fire departments were also called upon to help.
In an update just after 9 p.m., Sweeny Fire said its firefighters were heading back home after the fire was mostly contained.