The development of a townsite was registered on April 19, 1914 along the future site of the Canadian Pacific Railway branch line between Leader, Saskatchewan and Empress, Alberta. With the railway came a flood of settlers to the area, most of whom were Germans. By the time World War I began the growth of the new community of Estuary swelled from a few hardy pioneers to a booming 800 citizens.
From 1914 to 1954 Estuary had some 163 businesses, including its own power plant, a weekly newspaper, a theater, six blacksmith shops, 10 livery barns, six rooming houses, six hardware stores, 10 cafes/restaurants, 13 service stations, 23 grocery stores including a department store, and seven grain elevators.
Throughout Estuary's short history there have been many mysterious fires, two of which were devastating to the town. One in 1917 destroyed 18 properties and another in 1928. Several other minor fires which were just as mysterious were set. Because of Estuary's serious decline after the end of World War I it was believed that the fires were deliberately set in order to collect insurance.
In 1919 the town was hit hardest when the Canadian Pacific Railway decided to go ahead with plans to build a branch line from Leader to the new town of Burstall, causing a reduction of grain coming into town. Feeling betrayed by the railway company many residents picked up and left never to come back, taking everything with them including their homes and businesses.
The 1930s brought another blow to the once prosperous village, starting with the restructuring of the community's village status to a hamlet in 1930. By 1951 the fuel dealership shut its doors, soon after in 1966 the community's last store was closed. The railway station was bought and moved away in 1970. The last remaining businesses, the three remaining grain elevators, were closed and demolished in 1982.
