Statistics have been released from increased aquatic invasive species patrol efforts and the Minnesota Department of Natural Resources says that they are unacceptable.
So far this year, the AIS violation rate is 20%.
"The rate is unacceptable," said Maj. Phil Meier, DNR Enforcement Division operations manager. "The majority of violations could have been avoided if people had taken the time to change their routine when leaving lakes and rivers, and comply with AIS laws."
Through June 6, 193 criminal citations, 463 civil citations, 975 written warnings and 267 verbal warnings were issued.
Last year about 850 citations or warnings were issued to violators of Minnesota's AID laws.
That compares with 293 citations and warnings issued in 2010.
Extra patrols began on May 12 and will continue through the summer.
Under Minnesota law, it is illegal to transport invasive aquatic plants and animals, as well as water, from water bodies infested with zebra mussels and spiny waterfleas.
Violators could face fines up to $500 and some penalty amounts will double starting July 1.