The book lists encounters by level. For 5e, divide the recommended 4e level by 2 (e.g., a 4e Level 5 encounter becomes a 5e Level 2-3 encounter). Use Kobold Fight Club or similar tools to rebalance.
Neverwinter was once a beacon of civilization known for its beauty and year-round warm harbor, kept ice-free by the magically heated Neverwinter River. However, the campaign begins in the aftermath of a "Chasm" that nearly destroyed the city, leaving it a fractured landscape of rebuilding districts and monster-infested ruins. neverwinter campaign setting pdf
Once you obtain a legal copy, the real work begins. Here is a quick conversion guide. The book lists encounters by level
And so, we search.