Lake depth chart
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1,009-acre reservoir near Mexia. The lake tops out around 18 ft. The depth chart comes from Texas Water Development Board 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.
Traced from the shoreline, Lake Mexia runs 972 acres with 24 miles of edge, broken up by 2 islands. That shoreline is heavily fingered (development index 5.5) — bays, points and pockets everywhere, which multiplies the fishable edge. End to end it runs roughly 3 mi, about 2.3 mi across. The water lies in Limestone County. For a second option, Fort Parker Lake lies 5 mi southeast.
Spring puts largemouth bass in skinny water — 2 to 10 ft is the zone. As the season builds they drop to 5 to 18 ft, wintering in 5 to 18 ft. Spring largemouth bass concentrate at Shallow bay flat, a prime-rated weed flat around 2 ft. Warm-month bites cluster around early morning and the evening. A texas-rigged 10" worm or a deep-diving crankbait covers the summer program.
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 | 2 to 10 ft | dawn & dusk | Shallow bay flat (2 ft) | Spinnerbait, Chatterbait |
| Summer | 5 to 18 ft chart-limited; documented 8 to 20 ft | dawn & dusk | Shallow bay flat (2 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Main-lake point (2 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 5 to 18 ft chart-limited; documented 15 to 35 ft | midday | Deep basin (13 ft) | Blade bait, Jigging spoon |
Come spring, look for white bass tight to the bank in 2 to 12 ft. They move out to 5 to 18 ft in summer and finish the year down in 5 to 18 ft. If you only fish one area, make it Navasota River inflow: an inflow / creek mouth around 3 ft that scores prime in spring. Best bite is early morning and the evening. A slab spoon or a small topwater (schooling fish) is the honest summer answer here.
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 | 2 to 12 ft | dawn & dusk | Navasota River inflow (3 ft) | Curly-tail jig (white), Small lipless crank |
| Summer | 5 to 18 ft chart-limited; documented 8 to 25 ft | dawn & dusk | Deep basin (13 ft) | Slab spoon, Small topwater (schooling fish) |
| Fall | 4 to 18 ft chart-limited; documented 6 to 25 ft | dawn & dusk | Main-lake point (2 ft) | Jigging spoon, Blade bait |
| Winter | 5 to 18 ft chart-limited; documented 15 to 40 ft | midday | Deep basin (13 ft) | Jigging spoon (deep), Blade bait |
In spring, crappie run shallow here, mostly 2 to 8 ft. Summer pushes them deeper, 5 to 18 ft, and winter fish settle into 5 to 18 ft. Deep basin is the standout, a deep basin at roughly 13 ft, rated prime for winter crappie. Time it for early morning and the evening. You won't need more than a jig trolled/spider-rigged or a small crankbait (trolled) most summer days.
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 | 2 to 8 ft | midday & dawn | Shallow bay flat (2 ft) | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 5 to 18 ft chart-limited; documented 10 to 25 ft | dawn & dusk | Deep basin (13 ft) | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 5 to 18 ft chart-limited; documented 8 to 20 ft | dawn | Deep basin (13 ft) | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 5 to 18 ft chart-limited; documented 15 to 35 ft | midday | Deep basin (13 ft) | Tungsten jig + soft plastic, Tiny jigging spoon |
Spring puts channel catfish in skinny water — 3 to 12 ft is the zone. As the season builds they drop to 5 to 18 ft, wintering in 5 to 18 ft. Spring channel catfish concentrate at Navasota River inflow, a prime-rated inflow / creek mouth around 3 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 | 3 to 12 ft | dusk | Navasota River inflow (3 ft) | |
| Summer | 5 to 18 ft chart-limited; documented 8 to 25 ft | night & dusk | Deep basin (13 ft) | |
| Fall | 5 to 18 ft chart-limited; documented 10 to 30 ft | dusk | Deep basin (13 ft) | |
| Winter | 5 to 18 ft chart-limited; documented 20 to 40 ft | midday | Deep basin (13 ft) |
When the water first warms, blue catfish slide up into 4 to 18 ft. There's no big seasonal slide here — summer means 5 to 18 ft, winter 5 to 18 ft. Start at Deep basin. It's a deep basin holding about 13 ft of water and rates prime come winter. The feeding windows run 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 | 4 to 18 ft chart-limited; documented 5 to 25 ft | dusk | Navasota River inflow (3 ft) | |
| Summer | 5 to 18 ft chart-limited; documented 10 to 40 ft | dawn & dusk | Deep basin (13 ft) | |
| Fall | 5 to 18 ft chart-limited; documented 15 to 45 ft | dusk | Deep basin (13 ft) | |
| Winter | 5 to 18 ft chart-limited; documented 20 to 50 ft | midday | Deep basin (13 ft) |
Lake Mexia carries 7 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 13 ft down.
| Date | Species | Count | Size |
|---|---|---|---|
| 2025* | Largemouth Bass (fingerling) | 25,405 | — |
| 2025* | Largemouth Bass (fry) | 224,560 | — |
* 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 Mexia specifically, so confirm the current rules before you fish.
Check the official Texas fishing regulations →
Lake Mexia is about 18 ft (5 m) deep at its deepest point. The depth chart comes from Texas Water Development Board bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Anglers target largemouth bass, white bass, crappie, channel catfish, blue catfish on Lake Mexia.
Shallow bay flat is the top-rated area: a weed flat in about 2 ft of water that rates prime for largemouth bass in spring. The interactive chart above rates every spot for each 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 Mexia was most recently stocked 2025 with 25,405 largemouth bass (fingerling). The full stocking history is listed above.
Fishing on Lake Mexia 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.
Fort Parker Lake 5 mi · Tradinghouse Creek Reservoir 22 mi · Navarro Mills Lake 22 mi · Lake Limestone 23 mi · Lake Halbert 30 mi · Richland-Chambers Reservoir 32 mi · Lake Waco 39 mi · Aquilla Lake 40 mi · Bardwell Lake 44 mi · Lake Waxahachie 49 mi · Cedar Creek Reservoir 53 mi · Lake Whitney 53 mi
See how Lake Mexia stacks up: best largemouth bass lakes in Texas · best white bass lakes in Texas · best crappie lakes in Texas · best channel catfish lakes in Texas
Browse all Texas fishing maps. See every water on DepthScout. Depth data: Texas Water Development Board, Hydrographic surveys. 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.