Small-scale hydropower production is a comparatively small power resource, but it is valuable as it is CO2-free, renewable, and flexible.~However, small-scale hydropower owners in Sweden often operate their plants empirically and without coordinating with other plant owners of the same river system, possibly resulting in suboptimal water usage.~This paper investigates two different hydropower planning strategies for small-scale hydro in a realistic case study from historical hydrological data. Two scheduling models are formulated and compared; a coordinated scheduling model assumes centralised information sharing to calculate optimal planning results, and a successive, greedy planning process, where each power plant determines its operational schedule individually and passively, depending on the water discharged from the upstream plants.