The Dulnain drains the Monadhliath mountains and joins the Spey at Dulnain Bridge between Aviemore and Grantown-on-Spey. It is one of the more productive wild trout tributaries of the whole Spey system — a fast, clean, stony river that runs over granite and mica-schist and holds wild brown trout in decent numbers through most of its length. Some sea trout and the occasional salmon come up from the Spey but this is wild trout water first and foremost, with good hatches of March browns in spring and medium olives through May and June. Day tickets are easy to come by through the Strathspey Angling Improvement Association and local outlets in Aviemore and Grantown. Proper hill stream fishing, a short drive from some of Scotland's best-known salmon water but quieter than any of it.

• Granite

• Ecology: Moderate
• Chemical: Unknown