Trout Unlimited - Washington Water Project's (TU-WWP) Icicle Creek Boulder Field Passage Design Project completed preliminary designs for fish passage at the boulder field in Icicle Creek and assessed upstream falls above the major barrier in the boulder field. Icicle Creek is the major fish-bearing tributary to the Wenatchee River, in WRIA 45. This project built on TU-WWP's recent work of assessing the potential for fish distribution in the 23 miles above the boulder field. The design focused on habitat connectivity for bull trout and steelhead. This phase focused on various design alternatives and narrowed the design to one specific design for final refinement as the project moves to construction.