Fernan Lake is a 300-acre body of water located northwest of Lake Coeur d'Alene, easily accessible from I-90's Sherman Street exit in Coeur d'Alene, Idaho. The lake's long, narrow shape and relatively protected waters make it particularly suitable for paddling, especially during spring months.

Two primary access points serve paddlers: Fernan Park at the west end offers a public boat launch and docks, including a special kayak entrance to the east. A second launch area for small boats and kayaks exists at the lake's east end. A $5 fee applies at the main boat ramp.

The lake's southern shoreline remains completely undeveloped due to steep terrain, with more than half of the northern shoreline bordering Idaho Panhandle National Forest. The east end features extensive lily pad flats, creating interesting paddling opportunities. Wildlife viewing is a highlight, with potential sightings of moose, bald eagles, and great blue herons.

Significant seasonal considerations affect paddling conditions. Spring (May-June) offers the best paddling experience, as the lake experiences severe blue-green algae blooms during summer months when water temperatures rise. The Fernan Lake Recreation and Conservation Association actively works to address these water quality challenges.

The lake shares a connection with Lake Coeur d'Alene via a short stream, though a private dam prevents paddle-through access between the two bodies of water. The north shore features a well-maintained paved forest service road with multiple pull-outs used by fishermen, making it easy to spot reference points while paddling.

For paddlers seeking permits and documentation, Idaho requires all non-motorized watercraft to display an Idaho Invasive Species Fund sticker. The lake's proximity to downtown Coeur d'Alene and diverse shoreline scenery make it a convenient destination for shorter paddling excursions, particularly during spring months before algae conditions develop.