The EBRFLOW program has been developed for determining the detailed coolant flow distribution in the Experimental Breeder Reactor-II (EBR-II) primary system. Pertinent results obtained from the code include a determination of the changes in core pressure drop and flow distribution with core loading changes and a comparison of the measured and EBRFLOW-predicted flow rates through an instrumented subassembly for EBR-II runs 42 through 48E.