Little Groundhog Reservoir   Be the first to submit input for Little Groundhog Reservoir. If you have info on Little Groundhog Reservoir, Malheur County, Oregon please submit it here to improve this web site.          These outdoors activities are available near Little Groundhog Reservoir.   Whitewater Near Little Groundhog Reservoir: Owyhee River, -blank-County, 5 miles away       Class III+(V+) - 65 miles long (Garat Crossing to Three Forks) Owyhee River, MalheurCounty, 6 miles away       Class III-IV(V) - 37 miles long (Three Forks to Rome) Owyhee River - North Fork, OwyheeCounty, 7 miles away       Class III-IV - 18 miles long (Off Mud Flat Road to Three Forks)