Member - Roachie (SA) replied:

Mate, I did that trip (from Karumba, Normanton, Burketown, Hells Gate, Booraloola, Roper Bar, Mataranka) in March, back in 1999. We had no worries at all as far as wet roads go, but every season is potentially quite different.
Good luck mate
Roachie

RobEG replied:

Mate March can be a tossup depending on how late the wet lasts and how big. We go up to Limmen Bight around easter each year and while they only had 50mm in feb this year it was a breeze (but the barra were hard). In 2004 early easter left late March, and a good wet and we were held up at the Limmen River Crossing one night. Road direct from Cape Crawford gets very boggy and while it is a lot longer the trip thru Booraloola is sounder going but gets to be just a paddock track in places between Booraloola and where it comes back onto the main road. Locals mark washouts pretty well with rocks and hazard markers but really the wet will control everything. Can ring the rangers at Nathan River National Park or Steve and Patsy Barrett at the fishing camp for road info. Steve is usually the first into Katherine after the wet.