Snowmobiles are allowed on designated trails only. Click here for a link to the snowmobile map. In GF, access to the trails is via designated drop-off sites only. Snowmobiles must be transported to the nearest drop-off site. You can report any unlawful snowmobile activity in your area, especially in the flood protection system and Greenway, by calling the Grand Forks Police Department at (701) 787-8000 or the East Grand Forks Police Department at (218) 773-1104.