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Fishing Alexander Reservoir: what the data says
50-acre reservoir near Kalāheo. The lake tops out around 35 ft. The contours are modeled from the water's real shoreline and maximum depth. Treat them as a rough guide, and never use them for navigation. What follows comes from the same scoring engine that paints the spots above.
Largemouth Bass fishing at Alexander Reservoir
Spring largemouth bass on Alexander Reservoir hold shallow, usually 2 to 10 ft. By summer they slide out to 8 to 20 ft, and by winter most fish are in 15 to 35 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 4 ft that scores prime in spring. Best bite is early morning and the evening. Summer baits: a texas-rigged 10" worm or a deep-diving crankbait gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Spinnerbait, Chatterbait |
| Summer | 8 to 20 ft | dawn & dusk | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Squarebill crankbait (shad), Spinnerbait |
| Winter | 15 to 35 ft | midday | Blade bait, Jigging spoon |
Peacock Bass (Tucunaré) fishing at Alexander Reservoir
In spring, peacock bass (tucunaré) run shallow here, mostly 2 to 12 ft. By summer they slide out to 3 to 15 ft, and by winter most fish are in 6 to 22 ft. The spot to know is Main-lake point, a point in about 9 ft of water that rates prime for peacock bass (tucunaré) in spring. In summer the feeding windows fall in midday and early morning.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 12 ft | midday & dawn | see map |
| Summer | 3 to 15 ft | midday & dawn | see map |
| Fall | 3 to 15 ft | midday & dawn | see map |
| Winter | 6 to 22 ft | midday | see map |
Channel Catfish fishing at Alexander Reservoir
Spring channel catfish on Alexander Reservoir hold shallow, usually 3 to 12 ft. By summer they slide out to 8 to 25 ft, and by winter most fish are in 11 to 35 ft. Deep basin is the standout, a deep basin at roughly 30 ft, rated prime for winter channel catfish. Best bite is after dark and the evening.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | dusk | |
| Summer | 8 to 25 ft | night & dusk | |
| Fall | 10 to 30 ft | dusk | |
| Winter | 11 to 35 ft | midday |
Bluegill fishing at Alexander Reservoir
In spring, bluegill run shallow here, mostly 1 to 6 ft. Summer pushes them deeper, 4 to 15 ft, and winter fish settle into 10 to 25 ft. Shallow bay flat is the standout, a weed flat at roughly 4 ft, rated prime for spring bluegill. Best bite is early morning and the evening. Tie on a small sponge spider (fly) or a micro tube jig and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 1 to 6 ft | midday & dusk | 1/32 oz jig + micro plastic, Tiny popper (evenings) |
| Summer | 4 to 15 ft | dawn & dusk | Small sponge spider (fly), Micro tube jig |
| Fall | 6 to 18 ft | midday | Micro jig + waxworm, Small spoon tipped |
| Winter | 10 to 25 ft | midday | Tungsten ice jig + plastic, Tiny spoon |
Tilapia fishing at Alexander Reservoir
In spring, tilapia run shallow here, mostly 1 to 6 ft. Summer pushes them deeper, 2 to 10 ft, and winter fish settle into 5 to 18 ft. Shallow bay flat is the standout, a weed flat at roughly 4 ft, rated prime for spring tilapia. Best bite is midday and early morning.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 1 to 6 ft | midday & dusk | see map |
| Summer | 2 to 10 ft | midday & dawn | see map |
| Fall | 3 to 12 ft | midday | see map |
| Winter | 5 to 18 ft | midday | see map |
Common Carp fishing at Alexander Reservoir
Spring common carp on Alexander Reservoir hold shallow, usually 2 to 10 ft. They move out to 3 to 15 ft in summer and finish the year down in 10 to 30 ft. The spot to know is Shallow bay flat, a weed flat in about 4 ft of water that rates prime for common carp in spring. Best bite is early morning and the evening.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | |
| Summer | 3 to 15 ft | dawn & dusk | |
| Fall | 5 to 18 ft | midday | |
| Winter | 10 to 30 ft | midday |
Notable structure
- Deep basin: deep basin, around 30 ft
- Break off the point: drop-off, around 16 ft
- Main-lake point: point, around 9 ft
- Secondary point: point, around 9 ft
- Shallow bay flat: weed flat, around 4 ft
- Back-bay flat: weed flat, around 4 ft
Common questions
How deep is Alexander Reservoir?
Alexander Reservoir is about 35 ft at its deepest point. The contours here are modeled from the water's real shape and maximum depth, so treat them as a rough guide.
What fish are in Alexander Reservoir?
Anglers target largemouth bass, peacock bass (tucunaré), tilapia, bluegill, channel catfish, common carp on Alexander Reservoir.
Where is the best fishing spot on Alexander Reservoir?
Shallow bay flat is the top-rated area: a weed flat in about 4 ft of water that rates prime for largemouth bass in spring. Open the map above to see every rated spot for each species and season.
When is the best time to fish Alexander Reservoir?
For largemouth bass, the summer bite is best in early morning and the evening. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Nearby waters
Ipuolono Reservoir · Aepo Reservoir · Mauka Reservoir · Aepoeha Reservoir · Waita Reservoir · Halenanahu Reservoir
See how Alexander Reservoir stacks up: best largemouth bass lakes in Hawaii · best peacock bass (tucunaré) lakes in Hawaii · best tilapia lakes in Hawaii · best bluegill lakes in Hawaii
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