River networks comprise spatially-structured food webs across headwaters, mainstems, and floodplains that provide diverse foraging opportunities for mobile consumers. These so-called foodscapes are theorized to promote the productivity and stability of aquatic consumers, such as stream fishes, but such theory is rarely incorporated into watershed management. Here, we develop a spatially-explicit food web simulation model to predict salmon and trout responses to restoration alternatives in the Meadow Creek watershed in northeastern Oregon, USA. The model tracks consumer-resource biomass dynamics over time in different reaches of the river network that are linked by spatial flows of basal resources, invertebrates, and fish. We parameterized the model with in-stream and riparian vegetation conditions collated from previous studies, and simulated patterns of periphyton, invertebrate, and fish abundance across the watershed. This spatially-explicit model gives insight into the potential for effects of local restoration actions to carry-over into different parts of the watershed, which can feed into the adaptive management process. This model is a step towards greater understanding of how watershed management influences foraging patterns and growth potential critical to supporting mobile consumers in river foodscapes.