Jackass Ginger Pool

Jackass Ginger Pool, Oahu

Jackass Ginger Pool is a small, charming-looking 10-foot (3 m) waterfall in the Honolulu neighborhood of Nu'uanu. It has a swimming hole around eight feet (2.4 m) in depth, but depth, rocks and stream flow can change, so jumping is not recommended. Even Hawaiian royalty used to sit on ti leaves around this pool and swim here.

The waterfall is accessible via the Judd Memorial Trail. The hike, which travels along the Nu'uanu Stream, is quite short - only about a half mile (800 m) from the trailhead to the falls. The trailhead begins on Nu'uanu Pali Road just south of the Nu'uanu Reservoir. Scenery on this hike includes Cook pines, eucalyptus, swamp mahogany, guava and bamboo. Wear shoes with good traction because the trail can be muddy, especially after rainfall, and bring insect repellent.

CAUTION:
As with all freshwater streams and waterfalls in Hawaii, Leptospirosis bacteria may be present in the water. Do not drink the water and keep water out of open wounds (including small scratches) and eyes.

Key Features

Small waterfall pool along Nu'uanu Stream

Reached from the Judd Trail area in Nu'uanu Valley

Short streamside route with forest scenery

Trail conditions can include mud, rocks, roots and slippery footing

Avoid the area during or after heavy rain

Pool depth, rocks and stream flow can change after storms

Jumping is risky and not recommended

Leptospirosis bacteria may be present in freshwater streams and pools

Keep stream water away from cuts, eyes and mouth

Pack out trash and help protect the stream area

Frequently Asked Questions

Where is Jackass Ginger Pool located?

Jackass Ginger Pool is in Nu'uanu Valley on Oahu, along Nu'uanu Stream near the Judd Trail area.

How do people reach Jackass Ginger Pool?

Most people start near Judd Trail off Nu'uanu Pali Drive and follow a short streamside route toward the waterfall pool.

Can you swim at Jackass Ginger Pool?

Some people enter the pool when conditions are calm, but depth, rocks, logs and stream flow can change. Avoid the water after rain or when it looks high, murky or fast.

Is jumping safe at Jackass Ginger Pool?

Jumping is risky because underwater hazards and depth can change after storms. Do not rely on old descriptions, ropes or social media photos for safety.

Is there a freshwater health risk?

Yes. Leptospirosis bacteria may be present in Hawaii streams and waterfall pools. Do not drink the water, and keep it out of open cuts, eyes and mouth.