A depraved Nebraska man has been jailed for having sex with his biological daughter — even marrying her when cops were on the case, according to reports.

Travis Fieldgrove, 40, was tracked down by daughter Samantha Kershner, 21, after pleading with her mom to tell her who her real dad was, according to the Omaha World-Herald.

Kershner was allegedly motivated to get intimate over “a jealous competition with her half-sister regarding who could have sex with their father,” according to the paper, which cited a court affidavit.

The father-daughter relationship had turned sexual by September last year, and the pair married on Oct. 1 at the Adams County Courthouse in Hastings, according to the affidavit.

DNA results showed a 99.999% probability that Fieldgrove was her dad, the affidavit said.

“Evidence leading up to the arrest suggests that Fieldgrove and (the daughter) were aware of the biological relationship before being intimate, and further indicates that they quickly married one another after being notified of the investigation,” the Grand Island Police Department said at the time of their arrests.

Fieldgrove, of St. Paul, Nebraska, initially was charged with committing incest, a felony, but under a plea deal, pleaded no contest to an attempt charge, according to the report.

He was jailed for two years, with Hall County District Judge Mark Young giving credit for 121 days already served.

He also was ordered to serve a year’s post-release supervision with no contact with his daughter.

Defense attorney Jeff Loeffler told the World-Herald that Fieldgrove is embarrassed by the offense and claimed his client suffers from a brain injury and is not a “high-functioning” person.