The station is adjacent to Reservoir Yard and Carhouse, with the Cleveland Circle terminus of the C branch just a block away.

The station was located on the north side of the tracks east of Brighton Street (later Chestnut Hill Avenue).

[9] The regular short-turn loop was closed in August 1980 as part of the closure of the old Reservoir Carhouse, which had been built in 1889 when the Beacon Street line opened.

A two-track spur with two side platforms of its own runs north of the main station and connects with the non-revenue tracks on Chestnut Hill Avenue.

This spur, built after the loop removal in 1980, is sometimes used to detrain passengers from cars short-turning at Reservoir so as not to block the main tracks.

A sidewalk ramp runs alongside the spur line, serving as an accessible route to the station platforms from the north.