US CO Colorado (07. Shoshone Power Plant, Exit 123 (I-70) to Grizzly Creek, Exit 121 07. Shoshone Power Plant, Exit 123 (I-70) to Grizzly Creek, Exit 121 (I-70) High 4000 cfs IV Cornelis Booysen 55 n/a Raft Commercial Cold Water High Water Flush Drowning Does not Apply 2023-07-07