Rainfall around the main divide overnight will cause the North Canterbury Alpine Rivers to be higher than usual today (Tuesday). Expect flows to reach approximately Mean Annual Flood flowrates. Contractors and recreationalist users of the riverbed should remain aware of a changing situation and expect that the gravel portion bed will be underwater. No out of river flooding is anticpated at this stage.
To monitor river flows, go to;
https://ecan.govt.nz/data/riverflow/
(Message posted 0610, 17/9/19)