The dumping of rubbish, illegal camping and accessing rivers are putting the community at further risk of Covid-19.
Hawke's Bay Regional Council says it is "disappointed" with those dumping rubbish near river access points, regional parks, and other open spaces during the nationwide lockdown.
HBRC team leader of open spaces Russell Engelke said those participating are putting council staff and the wider community at risk.
"Overall, Hawke's Bay locals have played to the rules and been great," he said.
"But in the past few weeks we've seen illegally dumped rubbish, trees cut down, people moving roadblocks to get access to rivers, illegal campers and dirt tracks being built.