Nestled along the shores of Frederick Sound in Southeast Alaska, Portage Bay is a beautiful and well-protected anchorage offering excellent shelter, stunning scenery, and abundant wildlife. Surrounded by forested mountains and fed by several streams, the bay provides a peaceful stop for cruisers exploring the waters between Petersburg and Tracy Arm. The anchorage is known for its quiet setting, reliable holding, and opportunities to experience Alaska's wilderness at its finest.
Portage Bay is a scenic and well-protected anchorage located along the northern shore of Frederick Sound in Southeast Alaska. Surrounded by steep, forested mountains and fed by glacial streams, the bay offers visiting boaters a quintessential Alaska wilderness experience. The anchorage is favored by cruisers seeking shelter, solitude, and easy access to some of the region's most spectacular wildlife viewing.
The bay serves as an excellent stopping point for vessels transiting between Petersburg, Tracy Arm, and the waters of Stephens Passage. Its protected waters provide a welcome refuge from the open reaches of Frederick Sound, while the surrounding landscape showcases the rugged beauty that defines Southeast Alaska.
Wildlife is abundant throughout the area. Humpback whales are commonly observed feeding in Frederick Sound near the bay's entrance, while harbor seals, sea lions, porpoises, river otters, and bald eagles are frequently encountered. During salmon runs, bears may be seen foraging along nearby shorelines and stream mouths.
Portage Bay also offers opportunities for kayaking, wildlife photography, beach exploration, and simply enjoying the quiet beauty of Alaska's coastal wilderness. The combination of reliable protection, stunning scenery, and exceptional wildlife makes it one of the more memorable anchorages in the Frederick Sound cruising grounds.
Boaters should remain alert for floating logs and debris, particularly after periods of heavy rainfall or spring runoff. As with many Southeast Alaska anchorages, tidal fluctuations can be significant, and care should be taken to account for changing depths and shoreline exposure at low water.
For many cruisers, Portage Bay represents the best of Southeast Alaska—safe anchorage, remarkable wildlife, and the feeling of being immersed in one of North America's last great coastal wilderness areas.
Approach notes, hazards to watch for, and what's available once you're tied up.
The approach to Portage Bay from Frederick Sound is generally straightforward in good visibility. Mariners should remain alert for whale activity, floating logs, and deadheads, which are common throughout Southeast Alaska and may be especially prevalent following periods of heavy rain.
As you enter the bay, depths decrease gradually, and vessels should stay within charted waters while approaching their chosen anchoring area. The inner bay provides the best protection and typically offers good holding in mud. Strong tidal currents are generally not a concern within the anchorage itself but may be encountered near stream mouths and constricted areas.
The preferred anchorage lies in the protected inner reaches of the bay where depths are suitable for most cruising vessels and holding is generally excellent in mud. The surrounding mountains help reduce swell, making Portage Bay a comfortable overnight stop even when Frederick Sound becomes choppy. It is a favored anchorage for cruisers seeking solitude, wildlife viewing, kayaking opportunities, and a secure refuge while transiting Southeast Alaska.
Wind protection summary and tide planning at a glance. Full per-direction and 7-day detail with Plus.
Live readings from the nearest OpenWeather station and WorldTides; refreshed every few minutes.
Source: OpenWeather One Call API + WorldTides.
A curated photo + map walkthrough showing approach, mooring options, and points of interest.
A guided walkthrough of Portage Bay with approach photos, depth notes, and points of interest — written by members who have been here recently.
Real first-hand reports and questions answered by members who have actually been here.
No reviews yet. Be the first.
Cruising-distance picks near this anchorage.
