In the design of previous water transport projects，the settlement and creep of the soft ground are considered，and the creep settlement of the rockfill itself is ignored. When the rockfill structures such as breakwaters，causeways，and backfills at the back of quayside piers cannot be effectively compacted and the rockfill structure is thick，its long-term creep settlement may affect the function of the structure. Based on a dike and breakwater project in Pakistan，we apply the feedback analysis method and laboratory test method to calculate the creep variable of rockfill，and compare and analyze the observation data of settlement and calculation results. The results show that the feedback analysis method has strong applicability to the calculation of creep settlement of rockfill in water transportation projects，and it is in good agreement with the actual observations. It can provide references for similar projects.