There is a large sign with various rules where the beach starts, but I cannot remember if it said anything about fires.
However, this site lists beach fires only allowed in approved fire pits:
http://www.calhouncotx.org/parks/agendas/11-12-2018 3 Example Beach Rules signage (002).pdf
ymmv
hth
travis
While staying there, we watched some people build a small fire right on the sand. Nobody said anything and they kept it small, so my guess is that it would be ok.
