Demi Lleyton of Leeton aided Thunder with two tries, including one in the second half to give the home side the lead at Greenfield Park, with another coming from Jemma Davie of Wagga.

Lleyton was later awarded best on ground for her efforts in the 14-8 win.

The team consisted of four Border players with youngsters travelling to help fill the side.

Back-to-back winning coach Craig Blackhall said he saw plenty of improvement from his newly formed team.

"They love it, these are girls that want to play and tackle," Blackhall said.

"From yesterday to today there's been a huge difference, even with their technique and tackling, they've learned a lot.

"For some, this carnival is the only thing they get to do every year down in the Riverina.

"It's slowly getting bigger, so hopefully there's something their for them in the future."

Thunder's Open women's side weren't quite as lucky, bowing out in the semi-final to three-time carnival winners Yenda, 20-0.

It came after the Border outfit finished top of their pool on Saturday.

The side was led by co-coaches Mark Daly and Steve Ballard, who were both thrilled with the side's efforts.

"They'll learn from it and I know they'll only get better from here," Blackhall said.

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"Girls rugby league throughout NSW is just going to keep getting bigger and so will this carnival.

"It's been great for the local girls and great for teams that come down."

The Open Championship final was taken out by Yenda against Wagga Kangaroos, while the plate final was won by Riverina Sistas who defeated Murrumbidgee and the Bowl final secured by Wodonga Storm against Darlington Point Coleambally

Budgewoi claimed top honours in the under-14's competition, in what was the first time the category has been held in the carnival.