**2. Ecosystem services provision potentially influenced by water management**

At the start of the "Water for All" project, a workshop was run which compared the Lunan Water with the River Leven, another lowland catchment in eastern Scotland. Eight main elements of Ecosystem Services Provision that could be affected by water management in the two catchments were identified. These are summarised in **Table 1**. Of these, those marked as having a high potential for influence in the Lunan Water became the focus of attention for that catchment. A separate project [10] explored the potential of flushing for control of algal blooms in Loch Leven, on the River Leven, using the Lake algal model PROTECH [11].

The key risk factors considered for improved management were:



#### **Table 1.**

*Influences of hydraulic management on ecosystem service provision for two catchments in eastern Scotland. H = high, M = medium, L = low.*

A tilting weir, as a lateral structure on the common lade, could help divert these sediment/nutrient rich waters away from floodplain wetlands at key times;

• Risk of low flows. This could cause damage to ecological status of the river and economic impact to downstream irrigators. An in-line tilting weir at the lake outlet to the common lade could act as a penning structure to facilitate retention of water in early summer in the lakes, to provide water for abstraction and maintain low flows. This element of the analysis was considered in detail elsewhere [13].
