LADY BIRD LAKE Big Bass Guide

Reach 10 · Blunn Creek to Festival Beach

4.3–5.0 mi below Tom MillerDeepest ≈ 33 ftWidth ~585 ftAccess: Holiday Inn ramp
Reach 10 depth map: Blunn Creek to Festival Beach, with I-35

Blunn Creek to Festival Beach, through the three I-35 bridges and past Harpers Branch. Depths from my grid of TWDB 2008 points analysis.

The bottom analysis

Cover and forage

Through the seasons inference

Season Giant play
Winter / pre-spawn The best winter water on the lake. Football jig into the 33-ft hole at 10C; jig on the deepest I-35 piers
Spawn Harpers Branch and Blunn Creek mouths; pre-spawn females stage on the 10D drop
Summer I-35 shade all day: jig or 10-in worm on the pier bases at dawn and until 10 pm
Fall Glide or swimbait across the Harpers Branch delta as shad move in

How to fish it for a giant

The Approach

  • 10C first. Sit in about 25 ft and work a jig from the creek delta down to the 28- and 33-ft water; a slow glide over the delta lip in low light analysis.
  • I-35. Hold upstream of the deepest span and work each pier base; the deck keeps it shaded all day analysis.
  • Line. 20–25 lb fluorocarbon around piers (Wired2Fish).

Access, hazards and rules

I-35 construction

Expect barges, booms and temporary work platforms around I-35. Obey closures and keep clear of work crews unverified.

Reach 10 Spots: Blunn Creek to Festival Beach (I-35, Holiday Inn ramp)

5 spots: 10A, 10B, 10C, 10D, 10E. Close-up maps from the 2008 survey; scores from the giant ranking.

10A · I-35 piling rows (main and frontage bridges)

Bridge piling rowTarget 30.25069, -97.73592Boat 30.25084, -97.73626
87/100Giant rank
#4 of 51
Deep water5Cover5Forage4Low pressure3Data4Best: Winter and pre-spawn · Post-spawn and summer
Spot 10A micro-map and depth profile

The bridge line is the OSM road or rail centerline. Pier markers are inferred from NBI span counts by assuming equal spans centered on the channel, except at the railroad bridge, where TWDB's footing outlines are used. Orange dashes show where a downstream eddy line should form during a release inference. Contours: 5-ft, at 19 soundings per acre within 250 ft.

Measure Value
Bridge (NBI 2025) main lanes 9 spans, 1,052 ft, longest 130 ft, built 1954; two frontage bridges (1982). Being rebuilt
Water width along the deck 492 ft (2008 TWDB shoreline) analysis
Deepest water under the deck 30.4 ft, 318 ft from the south end analysis
Deep-water access deepest within 300 ft: 31 ft analysis
Data support 19 soundings per acre; nearest sounding 139 ft from the crossing center

Why a giant would use it. Three parallel I-35 bridges with the deepest piling water in the lake: about 30 ft under the main span. Shade lines move across the water all day, and the piers break the slow river current. Score factors: cover = three I-35 bridges, deep piers; forage = shad in shade; pressure = construction zone, few anglers. inference

Wind and current. Weak current; fish the down-current side of each pier when Tom Miller releases. The bridges shelter the water underneath from most winds. Long SE and NW fetch along the reach. inference

Sun and shade today (Oct 12). Shade under the deck at all hours. analysis

Boat position and cast lanes. Hold upstream of the deepest span (yellow triangle) and cast down-current to the eddy behind each pier (magenta arrows) inference.

Big-bass plan by season (★ = this spot is a seasonal pick) inference

Hazard · Construction zone I-35 is being rebuilt; expect barges, booms and closures unverified.

10B · Holiday Inn ramp drop (north bank)

Ramp / steep bankTarget 30.25273, -97.73784Boat 30.25248, -97.73810
57/100Giant rank
#36 of 51
Deep water2Cover3Forage3Low pressure3Data4Best: any season (not a seasonal pick)
Spot 10B micro-map and depth profile

Orange line: break top. Blue dot: base of the break. Black dots: 2008 TWDB soundings. Shoreline squares: bank type (see the Bank-Type Map chapter). Contour interval: 5 ft, at 20 soundings per acre within 250 ft.

Measure Value
Depth at the bank 0.5 ft (first wet grid cell, 2 ft from the OSM shoreline) analysis
Break top 0.9 ft, 2 ft from the bank analysis
Base of the break 16.3 ft, 82 ft from the bank analysis
Slope steepest 2.9 ft per 10 ft; average 1.9 ft per 10 ft across the break analysis
Bank type wood (confidence: low-medium)
Deep-water access 20-ft water 183 ft away; 25-ft water 340 ft away; deepest within 300 ft: 23 ft analysis
Data support fair (nearest sounding 22 ft from the break)

Why a giant would use it. The Holiday Inn ramp sits on a wooded north bank that slopes to about 16 ft 80 ft out, with 25-ft water within 340 ft. Score factors: cover = ramp, wooded bank; forage = sunfish; pressure = small ramp. inference

Wind and current. Best wind: from the SW (blowing onto this bank) analysis. SW wind blows onto it. Slight current. inference

Sun and shade today (Oct 12). This is the NE bank of the reach. With 40-ft trees, a shade band of 25 ft or more falls on the water at: 8:05 am. analysis

Boat position and cast lanes. Hold over about 18 ft, roughly 128 ft off the bank (yellow triangle). Fan three casts to the break top (magenta arrows), then turn and work parallel to the break along the dashed lane inference.

Big-bass plan by season (★ = this spot is a seasonal pick) inference

10C · Harpers Branch mouth into the 33-ft hole

Creek mouth / channel holeTarget 30.24955, -97.73506Boat 30.24968, -97.73483
90/100Giant rank
#2 of 51
Deep water5Cover3Forage5Low pressure4Data5Best: Winter and pre-spawn · Fall
Spot 10C micro-map and depth profile

Orange line: break top. Blue dot: base of the break. Black dots: 2008 TWDB soundings. Shoreline squares: bank type (see the Bank-Type Map chapter). Contour interval: 2 ft, at 28 soundings per acre within 250 ft.

Measure Value
Depth at the bank 4.5 ft (first wet grid cell, 0 ft from the OSM shoreline) analysis
Break top 5.9 ft, 0 ft from the bank analysis
Base of the break 13.5 ft, 42 ft from the bank analysis
Slope steepest 2.8 ft per 10 ft; average 1.8 ft per 10 ft across the break analysis
Bank type natural (confidence: low)
Deep-water access 20-ft water 45 ft away; 25-ft water 60 ft away; deepest within 300 ft: 33 ft analysis
Data support good (a 2008 sounding lies within 15 ft of the break)

Why a giant would use it. Harpers Branch enters right next to the deepest bridge water: the transect falls from about 6 ft at the bank to 28 ft about 140 ft out and 33 ft about 260 ft out. A creek mouth, a hole, and pilings within 300 ft of each other. Score factors: cover = creek mouth on a 33-ft hole; forage = creek inflow next to deep water; pressure = little bank access. inference

Wind and current. Best wind: from the NE (blowing onto this bank) analysis. NE wind blows onto it (rare). The I-35 decks block much of the NW wind. Harpers Branch only runs after rain. inference

Sun and shade today (Oct 12). This is the SW bank of the reach. With 40-ft trees, a shade band of 25 ft or more falls on the water at: 1:00 pm, 2:00 pm, 3:00 pm, 4:00 pm, 5:00 pm, 6:00 pm, 6:30 pm. analysis

Boat position and cast lanes. Hold over about 15 ft, roughly 88 ft off the bank (yellow triangle). Fan three casts to the break top (magenta arrows), then turn and work parallel to the break along the dashed lane inference.

Big-bass plan by season (★ = this spot is a seasonal pick) inference

10D · South-bank boardwalk drop

Boardwalk / drop-offTarget 30.24830, -97.73232Boat 30.24851, -97.73220
63/100Giant rank
#21 of 51
Deep water4Cover3Forage3Low pressure3Data2Best: any season (not a seasonal pick)
Spot 10D micro-map and depth profile

Orange line: break top. Blue dot: base of the break. Black dots: 2008 TWDB soundings. Shoreline squares: bank type (see the Bank-Type Map chapter). Contour interval: 5 ft, at 7 soundings per acre within 250 ft.

Measure Value
Depth at the bank 2.9 ft (first wet grid cell, 10 ft from the OSM shoreline) analysis
Break top 3.6 ft, 10 ft from the bank analysis
Base of the break 18.4 ft, 52 ft from the bank analysis
Slope steepest 5.2 ft per 10 ft; average 3.5 ft per 10 ft across the break analysis
Bank type natural (confidence: low)
Deep-water access 20-ft water 60 ft away; 25-ft water 116 ft away; deepest within 300 ft: 30 ft analysis
Data support low (nearest sounding 193 ft away; the break is interpolated)

Why a giant would use it. A boardwalk-lined south bank that drops from about 4 ft to 18 ft within 52 ft, with 25-ft water within 120 ft. Score factors: cover = boardwalk edge; forage = sunfish; pressure = boardwalk anglers. inference

Wind and current. Best wind: from the NNE (blowing onto this bank) analysis. NNE wind blows onto it. Slight current. inference

Sun and shade today (Oct 12). This is the SW bank of the reach. With 40-ft trees, a shade band of 25 ft or more falls on the water at: 1:00 pm, 2:00 pm, 3:00 pm, 4:00 pm, 5:00 pm, 6:00 pm, 6:30 pm. analysis

Boat position and cast lanes. Hold over about 20 ft, roughly 98 ft off the bank (yellow triangle). Fan three casts to the break top (magenta arrows), then turn and work parallel to the break along the dashed lane inference.

Big-bass plan by season (★ = this spot is a seasonal pick) inference

10E · North-bank pier shelf above Festival Beach

Pier / shelf edgeTarget 30.24927, -97.73068Boat 30.24896, -97.73082
57/100Giant rank
#37 of 51
Deep water3Cover3Forage3Low pressure3Data2Best: any season (not a seasonal pick)
Spot 10E micro-map and depth profile

Orange line: break top. Blue dot: base of the break. Black dots: 2008 TWDB soundings. Shoreline squares: bank type (see the Bank-Type Map chapter). Contour interval: 5 ft, at 6 soundings per acre within 250 ft.

Measure Value
Depth at the bank 2.2 ft (first wet grid cell, 0 ft from the OSM shoreline) analysis
Break top 2.8 ft, 0 ft from the bank analysis
Base of the break 19.0 ft, 78 ft from the bank analysis
Slope steepest 2.7 ft per 10 ft; average 2.1 ft per 10 ft across the break analysis
Bank type wood (confidence: low-medium)
Deep-water access 20-ft water 89 ft away; 25-ft water 306 ft away; deepest within 300 ft: 25 ft analysis
Data support low (nearest sounding 176 ft away; the break is interpolated)

Why a giant would use it. A pier on a wooded north shelf above Festival Beach; 19 ft at 78 ft out. Score factors: cover = pier shelf; forage = sunfish; pressure = moderate. inference

Wind and current. Best wind: from the SSW (blowing onto this bank) analysis. SSW wind blows onto it. Slight current. inference

Sun and shade today (Oct 12). This is the NE bank of the reach. With 40-ft trees, a shade band of 25 ft or more falls on the water at: 8:05 am. analysis

Boat position and cast lanes. Hold over about 21 ft, roughly 122 ft off the bank (yellow triangle). Fan three casts to the break top (magenta arrows), then turn and work parallel to the break along the dashed lane inference.

Big-bass plan by season (★ = this spot is a seasonal pick) inference