Sign inSign up free Sign inSign up free Sign inSign up freeLake depth chart
Today's read
Recent public catches load as you reach this section.
1,680-acre reservoir near Laredo. South Texas border lake in Casa Blanca International State Park. The lake tops out around 36 ft. The contours come from a model of the real basin shape and its known max depth. Read them as probabilities, not soundings, and keep them out of navigation decisions. Species by species, here's what the data says the year looks like.
The drawn outline gives you 13.8 miles of bank to pick apart, broken up by an island. The 3.5 development index tells the story — a convoluted bank whose fishable edge far outruns the acreage. About 78% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. Figure 3.1 mi of water from one end to the other, 0.9 mi at the beam. The water lies in Webb County. The nearest mapped water is Falcon International Reservoir, 59 mi to the south.
The spring pattern is a shallow one: largemouth bass in 2 to 10 ft. As the season builds they drop to 8 to 20 ft, wintering in 15 to 35 ft. Top water on the chart: Shallow bay flat, a weed flat in the 4 ft range, prime in spring. Time it for early morning and the evening. Summer baits: a texas-rigged 10" worm or a deep-diving crankbait gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Shallow bay flat (4 ft) | Spinnerbait, Chatterbait |
| Summer | 8 to 20 ft | dawn & dusk | Break off the point (16 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Main-lake point (9 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 15 to 35 ft | midday | Break off the point (16 ft) | Blade bait, Jigging spoon |
Start shallow in spring: white bass & hybrids sit in 3 to 15 ft that time of year. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 11 to 36 ft. The spot to know is Creek inflow, an inflow / creek mouth in about 4 ft of water that rates prime for white bass & hybrids in spring. Warm-month bites cluster around early morning and the evening. Throw a jigging spoon or a topwater (when schooling) until the fish tell you otherwise.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 15 ft | midday & dawn | Creek inflow (4 ft) | Rooster tail / inline spinner, Curly-tail jig (white/chartreuse) |
| Summer | 10 to 30 ft | dawn & dusk | Main-lake point (9 ft) | Jigging spoon, Topwater (when schooling) |
| Fall | 8 to 25 ft | midday & dawn | Main-lake point (9 ft) | Small blade bait, Jigging spoon |
| Winter | 11 to 36 ft chart-limited; documented 20 to 40 ft | midday | Deep basin (31 ft) | Jigging spoon, Blade bait (vertical) |
Start shallow in spring: crappie sit in 2 to 8 ft that time of year. Summer pushes them deeper, 10 to 25 ft, and winter fish settle into 15 to 35 ft. The spot to know is Old creek channel, a creek channel in about 18 ft of water that rates prime for crappie in fall. Warm-month bites cluster around early morning and the evening. Throw a jig trolled/spider-rigged or a small crankbait (trolled) until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (4 ft) | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 10 to 25 ft | dawn & dusk | Old creek channel (18 ft) | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 8 to 20 ft | dawn | Old creek channel (18 ft) | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 15 to 35 ft | midday | Deep basin (31 ft) | Tungsten jig + soft plastic, Tiny jigging spoon |
The spring pattern is a shallow one: channel catfish in 3 to 12 ft. As the season builds they drop to 8 to 25 ft, wintering in 11 to 36 ft. Top water on the chart: Creek inflow, an inflow / creek mouth in the 4 ft range, prime in spring. Time it for after dark and the evening.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Creek inflow (4 ft) | |
| Summer | 8 to 25 ft | night & dusk | Old creek channel (18 ft) | |
| Fall | 10 to 30 ft | dusk | Old creek channel (18 ft) | |
| Winter | 11 to 36 ft chart-limited; documented 20 to 40 ft | midday | Deep basin (31 ft) |
Early season blue catfish use the shallows, holding in 5 to 25 ft. Summer is a 9 to 36 ft game here, winter an 11 to 36 ft one. The chart's best answer is Old creek channel — creek channel, 18 ft, prime for spring. Best bite is early morning and the evening.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dusk | Old creek channel (18 ft) | |
| Summer | 9 to 36 ft chart-limited; documented 10 to 40 ft | dawn & dusk | Old creek channel (18 ft) | |
| Fall | 11 to 36 ft chart-limited; documented 15 to 45 ft | dusk | Old creek channel (18 ft) | |
| Winter | 11 to 36 ft chart-limited; documented 20 to 50 ft | midday | Deep basin (31 ft) |
Spring puts flathead catfish in skinny water — 5 to 20 ft is the zone. As the season builds they drop to 8 to 30 ft, wintering in 11 to 36 ft. Fall flathead catfish concentrate at Deep basin, a prime-rated deep basin around 31 ft. Warm-month bites cluster around after dark and the evening.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | night & dusk | Old creek channel (18 ft) | |
| Summer | 8 to 30 ft | night & dusk | Old creek channel (18 ft) | |
| Fall | 10 to 35 ft | night & dusk | Deep basin (31 ft) | |
| Winter | 11 to 36 ft chart-limited; documented 20 to 45 ft | midday | Deep basin (31 ft) |
Lake Casa Blanca also holds common carp (3 to 15 ft in summer), bluegill (4 to 15 ft in summer). Pick any of them on the map above for rated spots and bait picks.
10 pieces of structure are mapped here — Deep basin, around 31 ft, is the deepest of them.
| Date | Species | Count | Size |
|---|---|---|---|
| 2026* | Channel Catfish (fingerling) | 358 | — |
| 2026* | Lone Star Bass (fingerling) | 37,024 | — |
| 2025* | Channel Catfish (fingerling) | 501 | — |
| 2025* | Lone Star Bass (fingerling) | 40,064 | — |
| 2024* | Channel Catfish (fingerling) | 603 | — |
| 2024* | Bluegill Sunfish (fingerling) | 110,683 | — |
| 2024* | Lone Star Bass (fingerling) | 36,779 | — |
* Approximate date (agency reports month or season only). Source: TPWD stocking history, retrieved 2026-09-23.
Season dates, license requirements, and size and bag limits for Texas waters are set by the Texas Parks & Wildlife — and special regulations can apply to Lake Casa Blanca specifically, so confirm the current rules before you fish.
Check the official Texas fishing regulations →
Lake Casa Blanca is about 36 ft (11 m) deep 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.
Anglers target largemouth bass, white bass & hybrids, crappie, channel catfish, blue catfish, flathead catfish, common carp, bluegill on Lake Casa Blanca.
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. 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.
Yes — per TPWD stocking history records, Lake Casa Blanca was most recently stocked 2026 with 358 channel catfish (fingerling). The full stocking history is listed above.
Fishing on Lake Casa Blanca is regulated by the Texas Parks & Wildlife. Check the official Texas regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Falcon International Reservoir 59 mi · Lake Findley 85 mi · Choke Canyon Reservoir 92 mi · Lake Corpus Christi 101 mi · Victor Braunig Lake 134 mi · Calaveras Lake 139 mi · Nueces River 140 mi · Frio River 143 mi · Redfish Bay 143 mi · Medina Lake 144 mi · Copano Bay 147 mi · Aransas Bay 152 mi
See how Lake Casa Blanca stacks up: best largemouth bass lakes in Texas · best crappie lakes in Texas · best bluegill lakes in Texas · best channel catfish lakes in Texas
Browse all Texas fishing maps. See every water on DepthScout. 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.