Geologists investigating this week's magnitude 6.2 Eketahuna quake are asking people to report any new landslides on private property, to help their research.
Already GNS Science has had reports of 37 landslides between Fielding and Masterton and geologists are keen to hear about others.
"We are looking at the distribution of landslides to see how it matches with the ground-shaking produced by the earthquake," geologist Mauri McSaveney said.
Records from seismic instruments showed that the strongest ground-shaking was to the west of the epicentre near Eketahuna, he said.
Councils had already supplied information on roadside landslides and now the geologists were focusing on others.
