FJ,
You are correct. For Salmon, below the tank X-Ing... There are 5 lakes within 20 minutes of Yelm (Trout, Bass, Catfish, Perch, etc.). The Nisqually above the Tank X-Ing is good Trout water. See link to read about Steelhead on the Nisqually (Steelhead on the Nisqually thread) .