South River field hockey Coach Katie Corcoran has stepped down after 13 seasons with the Seahawks, including the last eight as their head coach.

Corcoran, who led her team to the Maryland 4A championship in her first season as head coach in 2005 and in her final season this past November, wants to spend more time with her seven-year-old daughter and four-year-old son, and will coach her daughter’s youth team this fall instead.

“I took a long time to think about it, but I have two young kids and I feel like I miss a lot in the fall,” Corcoran said. “We’ve accomplished so much, and this last season in particular was amazing, and I thought it was time to put my family first.”

Corcoran was a varsity assistant for teams that won state titles in 2000 and 2004, and after winning a state championship in her first year as head coach in 2005, Corcoran led the Seahawks back to the state final in 2006.

South River lost in the Maryland 4A East region tournament to archrival Severna Park in each of the next five seasons, including four times in the region title game, before beating the Falcons in overtime in the region final this past season season en route to its fourth state crown.

The Seahawks finished 17-1-1, and were ranked No. 1 in The Post’s postseason Top 10.

“After each season I’ve considered it,” Corcoran said. “It just seemed like this is the right time.”

Corcoran will be replaced by Megan Atkinson, who was an assistant on Corcoran’s staff for Corcoran’s entire tenure as head coach.

The Seahawks will lose 12 seniors from last year’s team, including first-team All-Mets Taylor Bresnahan and Abbey Lawrence, but should remain a favorite under Atkinson in always-competitive Anne Arundel County.

“She’s incredible,” Corcoran said. “I think it will be an easy transition for the girls. I think it will be another amazing year for them and they won’t skip a beat.”