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Rating depth structure for largemouth bass.
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666-acre reservoir near Utuado. A deep karst-country reservoir on the Río Caonillas near Utuado, and a classic largemouth-and-peacock-bass water studied by DRNA fisheries biologists. The lake tops out around 131 ft. The depth chart comes from U.S. Geological Survey bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Here is how the season plays out for each species, straight from the data behind the map.
Drawn out, this is 521 acres of water rimmed by 10.6 miles of bank. An index of 3.3 puts the bank firmly in maze territory: point after pocket after cove, every one a casting target. About 8% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Tip to tip the water measures near 2.1 mi with a 1.2-mi widest point. You'll find it in Utuado County. The nearest mapped water is Lago Dos Bocas, 4 mi to the north.
Start shallow in spring: largemouth bass sit in 2 to 10 ft that time of year. Warm water sends them out to 8 to 20 ft; cold water stacks them in 15 to 35 ft. Top water on the chart: Break off the point, a drop-off in the 15 ft range, prime in winter. Fish it in early morning and the evening and you'll meet the bite. Throw a texas-rigged 10" worm or a deep-diving crankbait until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Shallow bay flat (3 ft) | Spinnerbait, Chatterbait |
| Summer | 8 to 20 ft | dawn & dusk | Break off the point (15 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Secondary point (19 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 15 to 35 ft | midday | Break off the point (15 ft) | Blade bait, Jigging spoon |
The spring pattern is a shallow one: peacock bass (tucunaré) in 2 to 12 ft. As the season builds they drop to 3 to 15 ft, wintering in 6 to 22 ft. Top water on the chart: Break off the point, a drop-off in the 15 ft range, prime in winter. Time it for midday and early morning. Summer baits: a topwater (walking bait) or a jerkbait gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 12 ft | midday & dawn | Shallow bay flat (3 ft) | Topwater prop bait, Jerkbait (fire tiger) |
| Summer | 3 to 15 ft | midday & dawn | Break off the point (15 ft) | Topwater (walking bait), Jerkbait |
| Fall | 3 to 15 ft | midday & dawn | Break off the point (15 ft) | Jerkbait, Swimbait |
| Winter | 6 to 22 ft | midday | Break off the point (15 ft) | Slow jerkbait, Jig |
The spring pattern is a shallow one: tilapia in 1 to 6 ft. Midsummer fish sit out in 2 to 10 ft before dropping to 5 to 18 ft for winter. The spot to know is Shallow bay flat, a feeding flat in about 3 ft of water that rates prime for tilapia in spring. Plan around midday and early morning in the warm months. Summer baits: a micro-jig near weed edges gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 6 ft | midday & dusk | Shallow bay flat (3 ft) | Tiny jig + bread-ball tip, Small worm under float |
| Summer | 2 to 10 ft | midday & dawn | Shallow bay flat (3 ft) | Micro-jig near weed edges |
| Fall | 3 to 12 ft | midday | Shallow bay flat (3 ft) | Small jig tipped with worm |
| Winter | 5 to 18 ft | midday | Break off the point (15 ft) | Slow micro-jig, warm outflows |
Start shallow in spring: channel catfish sit in 3 to 12 ft that time of year. Warm water sends them out to 8 to 25 ft; cold water stacks them in 20 to 40 ft. Top water on the chart: Old creek channel, a creek channel in the 29 ft range, prime in fall. Fish it in after dark and the evening and you'll meet the bite.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Shallow bay flat (3 ft) | |
| Summer | 8 to 25 ft | night & dusk | Old creek channel (29 ft) | |
| Fall | 10 to 30 ft | dusk | Old creek channel (29 ft) | |
| Winter | 20 to 40 ft | midday | Old creek channel (29 ft) |
Spring puts bluegill in skinny water — 1 to 6 ft is the zone. Warm water sends them out to 4 to 15 ft; cold water stacks them in 10 to 25 ft. Shallow bay flat is the standout, a feeding flat at roughly 3 ft, rated prime for spring bluegill. Plan around early morning and the evening in the warm months. A small sponge spider (fly) or a micro tube jig covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 6 ft | midday & dusk | Shallow bay flat (3 ft) | 1/32 oz jig + micro plastic, Tiny popper (evenings) |
| Summer | 4 to 15 ft | dawn & dusk | Back-bay flat (9 ft) | Small sponge spider (fly), Micro tube jig |
| Fall | 6 to 18 ft | midday | Break off the point (15 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 10 to 25 ft | midday | Break off the point (15 ft) | Tiny spoon |
8 pieces of structure are mapped here — Deep basin, around 129 ft, is the deepest of them.
Season dates, license requirements, and size and bag limits for Puerto Rico waters are set by the Puerto Rico DRNA — and special regulations can apply to Lago Caonillas specifically, so confirm the current rules before you fish.
Check the official Puerto Rico fishing regulations →
Lago Caonillas is about 131 ft (40 m) deep at its deepest point. The depth chart comes from U.S. Geological Survey bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Anglers target largemouth bass, peacock bass (tucunaré), tilapia, channel catfish, bluegill on Lago Caonillas.
Break off the point is the top-rated area: a drop-off in about 15 ft of water that rates prime for largemouth bass in winter. The map above holds the full rated-spot list for every species and season.
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.
Fishing on Lago Caonillas is regulated by the Puerto Rico DRNA. Check the official Puerto Rico regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Lago Dos Bocas 4 mi · Lago de Matrullas 12 mi · Lago Cerrillos 13 mi · Lago Guayabal 15 mi · Lago Toa Vaca 16 mi · Lago Lucchetti 18 mi · Lago Guajataca 19 mi · Bahía de Ponce 20 mi · Bahía de Guayanilla 20 mi · Bahía Tallaboa 20 mi · Caleta de Cabullones 21 mi · Bahía de Ballena 25 mi
See how Lago Caonillas stacks up: best largemouth bass lakes in Puerto Rico · best peacock bass (tucunaré) lakes in Puerto Rico · best tilapia lakes in Puerto Rico · best bluegill lakes in Puerto Rico
Browse all Puerto Rico fishing maps or see every water on DepthScout. Bathymetry credit: U.S. Geological Survey. How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.