I was never quite sure what an alluvial fan was until I visited one. The last remaining alluvial fan around Riding Mountain National Park is located off Hwy #5. The site is well signed right from the highway. Specific directions to alluvial fan: it is off Hwy #5 between Ochre River and junction of Hwys #5 & 10, turn south on Road 104W (there is a sign in the ditch along Hwy #5 that says Alluvial fan with an arrow, also watch for small signs at mile roads for their numbers), drive 4.8 km (3 miles) to Road 137N, turn east for 1.6 km (1 mile), turn south on Road 103W for 1.6 km (1 mile), east on Road 136N for .8 km. Watch for large sign at Crawford Creek. Follow the boardwalk to viewing deck. Now I know what an alluvial fan is and you can too. I made a short video about my visit.