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Rating depth structure for largemouth bass.
Shared by DepthScout anglers. Exact spots stay private, always.
77-acre reservoir near Orocovis. A small central-mountain reservoir near Orocovis, a popular local largemouth-bass and sunfish water that also holds tilapia and catfish. The lake tops out around 71 ft. The depth chart comes from U.S. Geological Survey bathymetric survey data, so the contours are survey-derived rather than computer-modeled. What follows comes from the same scoring engine that paints the spots above.
Lago de Matrullas maps at 59 acres behind 2.3 miles of shoreline. A middling shoreline index (2.1) gives it some bays to work without being a maze. About 38% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Tip to tip the water measures near 0.8 mi with a 0.3-mi widest point. It sits in Orocovis County. Its nearest charted neighbour, Lago Toa Vaca, is 7 mi to the south.
Spring largemouth bass on Lago de Matrullas hold shallow, usually 2 to 10 ft. They move out to 8 to 20 ft in summer and finish the year down in 15 to 35 ft. Put Shallow bay flat first on the milk run — a weed flat near 6 ft that grades prime for spring. The feeding windows run early morning and the evening. The summer box starts with a texas-rigged 10" worm or a deep-diving crankbait.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Shallow bay flat (6 ft) | Spinnerbait, Chatterbait |
| Summer | 8 to 20 ft | dawn & dusk | Back-bay flat (8 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Secondary point (9 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 15 to 35 ft | midday | Break off the point (36 ft) | Blade bait, Jigging spoon |
Early season tilapia use the shallows, holding in 1 to 6 ft. Summer is a 2 to 10 ft game here, winter a 5 to 18 ft one. The chart's best answer is Shallow bay flat — weed flat, 6 ft, prime for spring. Best bite is midday and early morning. Tie on a micro-jig near weed edges and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 6 ft | midday & dusk | Shallow bay flat (6 ft) | Tiny jig + bread-ball tip, Small worm under float |
| Summer | 2 to 10 ft | midday & dawn | Shallow bay flat (6 ft) | Micro-jig near weed edges |
| Fall | 3 to 12 ft | midday | Shallow bay flat (6 ft) | Small jig tipped with worm |
| Winter | 5 to 18 ft | midday | Shallow bay flat (6 ft) | Slow micro-jig, warm outflows |
Spring channel catfish on Lago de Matrullas hold shallow, usually 3 to 12 ft. They move out to 8 to 25 ft in summer and finish the year down in 20 to 40 ft. Put Break off the point first on the milk run — a drop-off near 36 ft that grades good for winter. The feeding windows run after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Shallow bay flat (6 ft) | |
| Summer | 8 to 25 ft | night & dusk | open water | |
| Fall | 10 to 30 ft | dusk | Break off the point (36 ft) | |
| Winter | 20 to 40 ft | midday | Break off the point (36 ft) |
Early season bluegill use the shallows, holding in 1 to 6 ft. Expect a summer slide to 4 to 15 ft, then a winter hold in 10 to 25 ft. Put Shallow bay flat first on the milk run — a weed flat near 6 ft that grades prime for spring. In summer the feeding windows fall in 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 | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 6 ft | midday & dusk | Shallow bay flat (6 ft) | 1/32 oz jig + micro plastic, Tiny popper (evenings) |
| Summer | 4 to 15 ft | dawn & dusk | Shallow bay flat (6 ft) | Small sponge spider (fly), Micro tube jig |
| Fall | 6 to 18 ft | midday | Shallow bay flat (6 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 10 to 25 ft | midday | Back-bay flat (8 ft) | Tiny spoon |
The chart marks 6 structure features on Lago de Matrullas; the deepest is Deep basin at about 70 ft.
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 de Matrullas specifically, so confirm the current rules before you fish.
Check the official Puerto Rico fishing regulations →
Lago de Matrullas is about 71 ft (22 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, tilapia, channel catfish, bluegill on Lago de Matrullas.
Shallow bay flat is the top-rated area: a weed flat in about 6 ft of water that rates prime for largemouth bass in spring. 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 de Matrullas 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 Toa Vaca 7 mi · Lago Guayabal 8 mi · Lago Cerrillos 10 mi · Lago Caonillas 12 mi · Lago Dos Bocas 14 mi · Lago La Plata 18 mi · Caleta de Cabullones 18 mi · Bahía de Ponce 19 mi · Bahía de Rincón 20 mi · Bahía Tallaboa 23 mi · Bahía de Guayanilla 24 mi · Bahía de Jobos 25 mi
See how Lago de Matrullas stacks up: best largemouth bass lakes in Puerto Rico · best tilapia lakes in Puerto Rico · best bluegill lakes in Puerto Rico · best channel catfish 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.