Sioux Narrows/Nestor Falls Tourism - Visit the official municipal website for the most current municipal information and more Ontario Towns - Sioux Narrows - Learn some history and get answers to many frequently asked questions about visiting Sioux Narrows. Copperfin Credit Union - in Sioux Narrows, visit this site to see the financial services offered. Weather - Visit this site to see the current weather and forecast for Sioux Narrows. Fishing ? - Try a Top of the Line Guide. Laughing Water Lodge - Relax at a Friendly, Comfortable, Clean housekeeping resort