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, so it is also great for jumping into. In fact, it even has a rope tied to a tree above the falls for exactly that purpose. 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. Remember to wear proper footwear, as the trail can be muddy, especially right after rainfall, and keep insect repellent handy as well.

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

Nu'uanu Valley setting: Small waterfall pool along Nu'uanu Stream

Judd Trail access: Reached by a short side route from the Judd Trail area

Close to Honolulu: Forested stream setting not far from town

Small waterfall: Scenic cascade drops into a natural pool

Stream crossings: Trail conditions can include mud, rocks and slippery footing

Rain caution: Avoid the area during or after heavy rain

Swimming caution: Pool depth, rocks and flow can change after storms

No jump guarantee: Do not rely on ropes, old descriptions or social media photos for safety

Freshwater warning: Leptospirosis bacteria may be present in streams and pools

Protect open wounds: Keep stream water away from cuts, eyes and mouth

Pack out trash: Help protect the Nu'uanu stream corridor

Short hike planning: Good shoes, water and insect repellent are useful

Frequently Asked Questions

Where is Jackass Ginger Pool located?

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

How do visitors reach Jackass Ginger Pool?

Visitors usually start from the Judd Trail area off Nu'uanu Pali Drive and follow a short streamside route toward the waterfall pool.

Can visitors swim at Jackass Ginger Pool?

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

Is it safe to jump into 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. As with all Hawaii streams and waterfall pools, leptospirosis bacteria may be present. Do not drink the water, and keep it out of open cuts, eyes and mouth.