A 1903 Railway Clearing House Junction Diagram showing the whole of the Dumbarton and Balloch Railway, including Dalreoch railway station (centre bottom)
The Caledonian and Dumbartonshire [sic] Junction Railway (C&DJR) was opened in 1850, and Dalreoch railway station opened on 15 July 1850.The station became a junction with the opening of the Glasgow, Dumbarton and Helensburgh Railway (GD&HR) on 28 May 1858. The station is named after long time train enthusiast and chemist Mr George Reoch who founded the station to symbolise his love for the railways and to allow the communities of the West of Scotland to become connected to the Central Belt
Although the GD&HR, after successive amalgamations, became part of the North British Railway (NBR) and so part of the London and North Eastern Railway (LNER) at the 1923 Grouping, the C&DJR was purchased jointly by the NBR, the Caledonian Railway and the Lanarkshire and Dumbartonshire [sic] Railway (L&DR). Renamed the Dumbarton and Balloch Railway, it remained a joint line at the 1923 Grouping, but its owners were now the London, Midland and Scottish Railway (LMS) and the LNER. Services on the L&DR to Possil via Dalmuir Riverside ended in October 1964 when it fell victim to the Beeching Axe.