The River Calder is generally taken to mean “hard water” i.e. a bouldery stream, very apt for this mobile river which has its headwaters in the high grounds of the Monadhlaiths before joining the Spey at Newtonmore. The high energy River Calder. The Calder is capable of supporting good fish densities, but only if conditions are benign. The river bed mobilises readily in high flows, redds tend to be washed out in these conditions. Our monitoring in the Calder had identified that is was a part of the catchment where juvenile stocks currently appeared to be well below what had…

Source: Spey Fishery Board – River Calder stocking monitoring