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Skwala Nymph

Generally found in swift water, but is also known to hang around the edges of deeper pools due to its desire for cold water. 

Similarly to other stoneflies, the Skwala lives anywhere from 2-4 years in the water in its nymphal stage. 

When fishing a Skwala nymph it is very important to get your flies down right on the bottom.  This is partially due to the fish being down deep in the colder parts of the year but mostly has to do with the Skwala’s clinging nature.  They cling to the bottom of the river and only become accessible to the trout when brushed downstream by a surge of water.  So they never stray very far from the bottom.

Emergence:

Similarly to other stoneflies, the Skwala lives anywhere from 2-4 years in the water in its nymphal stage. 

When fishing a Skwala nymph it is very important to get your flies down right on the bottom.  This is partially due to the fish being down deep in the colder parts of the year but mostly has to do with the Skwala’s clinging nature.  They cling to the bottom of the river and only become accessible to the trout when brushed downstream by a surge of water.  So they never stray very far from the bottom.

Like other stoneflies the Skwala stonefly doesn’t swim up to the surface to emerge. When the water hits around 42 degrees this insect scurries across the rocky bottom and crawls out of the river onto some form of rocky shore, or overhanging foliage to emerge from its exoskeleton.

Since these stoneflies are terrible swimmers, right before emergence is a great time to fish banks and other edges with a Skwala nymph, since the fish will be stacked up anticipating a conveyer belt of clumsy stonefly nymphs tumbling down their way. So make sure to cast at the bank before walking straight into the water!

Fishing Tactics:

One of the best known fisheries for the Skwala stonefly is the Yuba River in between Parks Bar and Englebright Reservoir. This section of water is known for its hard fighting, healthy rainbows and this is one of the few times of year where even the big fish will be looking up for their next meal.  Another colder option for amazing Skwala fishing would be the Truckee river, where I would mostly focus on fishing the nymph stage with the occasional switch to a Skwala dry. Many of California’s mountain streams like the Truckee and Feather have Skwala Stones.

Our Favorite Skwala Nymph Patterns