Winnings at Baton Rouge’s three riverboat casinos dropped a combined 4.9 percent in March as gambling establishments across the state saw year-to-year drops in gaming revenue.

The three riverboats brought in nearly $24.9 million in March, a drop from the $26.2 million in winnings during March 2015, figures released Monday by Louisiana State Police show.

Hollywood Casino Baton Rouge had the biggest decrease in winnings, falling 9.1 percent from $6.7 million in March 2015 to $6.1 million. L’Auberge Baton Rouge, the biggest casino in the market, saw its winnings fall by 4.1 percent to nearly $13.4 million from $13.9 million. The Belle of Baton Rouge, the oldest casino in the market, was down 1.8 percent to $5.4 million from nearly $5.5 million.

Statewide, the 15 riverboats, four racetrack slots casinos and Harrah’s New Orleans brought in $214 million in March, a 9.7 percent decrease from March 2015’s $237.1 million.

The New Orleans casino market saw its winnings fall by 12.2 percent in March, the biggest drop in activity for any of the state’s gambling regions. The gambling establishments brought in more than $51.5 million during the month, compared with nearly $58.7 million in winnings during March 2015.

Revenue at Harrah’s dropped by 20.7 percent to nearly $24 million from $30.2 million. The casino has been hit hard by the New Orleans smoking ban, which forces gamblers to leave the slot machines and table games for a cigarette.

Lake Charles, the state’s largest casino market, saw its winnings drop by 11.8 percent. The three riverboats and slots at Delta Downs brought in $69 million, compared with $78.2 million the year before.

Shreveport-Bossier City was down 7.5 percent, with the six riverboat casinos and the slots at Harrah’s racetrack bringing in $60.9 million.

The Opelousas market, represented by the slots at Evangeline Downs, was down 5.4 percent to $7.7 million.

Follow Timothy Boone on Twitter, @TCB_TheAdvocate