THE Top End is feeling a little safer after two 'monster' saltwater crocs were removed from waterways in the space of 24 hours late last month.
Parks and Wildlife Service rangers removed a 4.08-metre male from the Katherine River on April 24, and soon afterwards fished a 4.82m male out of Corroboree Billabong north of the Arnhem Highway in Mary River National Park.
Both crocodiles had previously been reported as problems.
The "very fat and dark-looking saltie" 4.08m croc was trapped 1 kilometre downstream of the Katherine River low level crossing.
Senior wildlife ranger John Burke said the saltie had been lurking around for some time.
"This might be the croc that the Binjari community had reported seeing earlier on," Mr Burke said.
"He looks pretty healthy and wasn't too far from a popular swimming hole."
A 4.82m male estuarine (saltwater) crocodile was removed from Corroboree Billabong after being reported to Parks and Wildlife rangers as a problem crocodile.
Mr Burke said that the Croc Management Team received two calls over the weekend about nuisance crocodiles at Corroboree Billabong, a popular fishing area located north of the Arnhem Highway in Mary River National Park.
The larger croc at Corroboree Billabong had caused concerns after it became "somewhat friendly" with boats near the boat ramp before someone reported the croc had attacked a boat.
Rangers surveyed the area, found the croc "displaying dominant behaviour", and staged a three-hour "struggle" to capture it.
Northern Territory Parks and Wildlife senior wildlife ranger Tom Nichols said both incidents served as a stern reminder to be croc-wise.
"This is another reminder to people to be extremely cautious about any waterways in the Top End, because estuarine crocodiles can move around throughout the year," he said.
A total 100 estuarine crocodiles have been removed from Top End waterways so far this year.
The Department of Natural Resources, Environment, The Arts and Sport (NRETAS) urged the public to remember croc danger was very real.