The line was duplicated in December 1910 and, in July 1921, Reservoir became the terminus for suburban electric trains.

In 1924, an eighth-metre-long turntable was provided at the station, to turn the AEC railmotor which operated between Reservoir and Whittlesea, making two trips a day.

[6] In December 1929, electric train services were extended from Reservoir to Thomastown and, in 1940, the turntable was abolished.

[5] In 1963, manually operated boom barriers replaced hand-operated gates at the former High Street level crossing, which was at the down end of the station.

[11][12] On 29 December 1980, Harris backing trailer 533BT, which was in a consist operating the 23:15 down service to Epping, was damaged by fire as it arrived at the station.

[14] Two months earlier, the double line block system between Bell and Reservoir had been abolished.

[17][18] In September 2018, preliminary designs were released, showing that the grade separation would be achieved by elevating the railway, with a new station to be built at the existing location.