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Lake J.B. Thomas Water Level

USGS gauge 08118000 · near Vincent, TX · Texas Water Development Board

2,226.34ftNormal

Latest reading Oct 26, 11:45 AM · elevation

Lake J.B. Thomas is 31.7 ft below conservation pool today (2,226.34 ft vs 2,258.00 ft) — about normal for late October. It is 20% full. It has fallen 0.01 ft since yesterday and is down 0.09 ft over 7 days.

Lake 31.7 ft below conservation pool and steady, light SSE wind — good fall fishing day (7/10), best window 8:02 AM–9:02 AM (moonset near sunrise).

vs conservation pool−31.66 ftConservation pool 2,258.0 ft · Texas Water Development Board
How full20%42k of 200k acre-ft
vs normal for Oct 26+1.35 ftNormal · median 2,224.99 ft · 24 yrs
Change since yesterday−0.01 ft7 days: −0.09 ft
Same date last year2,233.59 ftNow −7.25 ft vs 2025
Air temp & weather now68°F · Chance Showers And ThunderstormsWind SSE 12 mph, gusts 17NWS forecast · see Weather & wind below
Sun today7:57 AM – 6:59 PMFirst light 7:31 AM · Last light 7:24 PM

Water level chart

ft above sea level

Conservation pool (2,258.0 ft) is 31.7 ft above the latest reading, off this chart

Conservation pool (2,258.0 ft) is 31.7 ft above the latest reading, off this chart

Conservation pool (2,258.0 ft) is 31.6 ft above the latest reading, off this chart

ReadingNormal range for the date (25th–75th pct.)Median for the date

Lake J.B. Thomas fishing report & conditions

updated Oct 26, 12:50 PM ET

Lake 31.7 ft below conservation pool and steady, light SSE wind — good fall fishing day (7/10), best window 8:02 AM–9:02 AM (moonset near sunrise).

Main species

  • Largemouth bass
  • White bass
  • Channel catfish
  • Flathead catfish
  • Blue catfish
  • White crappie

Source: Texas Parks and Wildlife — “Predominant Fish Species”, as published on the TPWD J.B. Thomas lake page · TPWD fishing report for this lake.

Best fishing times today

Today is a good fishing day (solunar + local conditions)

7/10

Full moon · 99% lit · New moon Mon, Nov 9 · Sunrise 7:57 AM · Sunset 6:59 PM

Major fishing times

  • Moon overhead12:27 AM–2:27 AM
  • Moon underfoot12:54 PM–2:54 PM

Minor fishing times

  • Moonset8:02 AM–9:02 AM
    Sunrise
  • Moonrise6:40 PM–7:40 PM
    Sunset
Fishing times for the next 7 days
TodayOct 267/10GoodMajor 12:27 AM–2:27 AM · 12:54 PM–2:54 PM
Minor 8:02 AM–9:02 AM · 6:40 PM–7:40 PM
Light wind 7–13 mph
TueOct 275/10FairMajor 1:23 AM–3:23 AM · 1:53 PM–3:53 PM
Minor 9:14 AM–10:14 AM · 7:27 PM–8:27 PM
Light wind 4–12 mph
WedOct 283/10PoorMajor 2:24 AM–4:24 AM · 2:56 PM–4:56 PM
Minor 10:27 AM–11:27 AM · 8:22 PM–9:22 PM
Light wind 6–12 mph
ThuOct 295/10FairMajor 3:28 AM–5:28 AM · 4:00 PM–6:00 PM
Minor 11:36 AM–12:36 PM · 9:26 PM–10:26 PM
Light wind 5–10 mph
FriOct 304/10FairMajor 4:33 AM–6:33 AM · 5:04 PM–7:04 PM
Minor 12:36 PM–1:36 PM · 10:35 PM–11:35 PM
Light wind 6–9 mph
SatOct 315/10FairMajor 5:34 AM–7:34 AM · 6:04 PM–8:04 PM
Minor 1:27 PM–2:27 PM · 11:46 PM–12:46 AM
Light wind 5–9 mph
SunNov 15/10FairMajor 5:32 AM–7:32 AM · 5:59 PM–7:59 PM
Minor 1:09 PM–2:09 PM · 11:55 PM–12:55 AM
Light wind 4–9 mph
How this rating works

Solunar theory says fish feed more when the moon is overhead or underfoot (major periods, about 2 hours) and around moonrise and moonset (minor periods, about 1 hour). On a lake or river there is no tide, so instead of tide changes we score the local conditions anglers watch: the barometric pressure trend, the wind, whether the lake level is steady, and the water temperature where it is measured.

Baseevery day starts at 11
Sunrise / sunseta period overlaps sunrise or sunset ±1 h: major +2, minor +1 (max 3) (Moonset × sunrise +1; Moonrise × sunset +1)2
Moon phasewithin 2 days of a new or full moon +2, within 4 days +1 (today: 0.5 days)2
Local conditionspressure 6 AM→6 PM: falling +2, steady or slowly rising +1, rising fast 0 · daytime wind 4–15 mph +1, over 20 mph (or gusts over 30) −1 · level within ±0.25 ft in 24 h +1 · water 55–75°F +1, below 45°F or above 85°F −1 (0 to 4 in total)
  • Pressure: No NWS pressure forecast for this day +0
  • Wind: Light SSE 7–13 mph, gusts 20 +1
  • Level: Level steady (−0.01 ft in 24 h) +1
2
Today7, rounded7/10

1–3 poor · 4–5 fair · 6–7 good · 8–10 excellent. Pressure and wind are the NOAA National Weather Service hourly forecast for this spot; the level/flow trend is the latest 24 hours of readings on this page. Days 2–7 score sun, moon, forecast pressure and forecast wind only (level and water temperature aren’t forecast). Solunar times are a rule of thumb, not a guarantee.

Solunar periods calculated for 32.59, -101.14 (moon times from astronomical equations, Lake J.B. Thomas local time).

Weather & wind at Lake J.B. Thomas

air temperature, not water
Air temp68°FNWS forecast for this hour
Wind12 mphfrom the SSE · NWS forecast this hour
Gusts17 mphpeak gusts this hour

3-day forecast

NOAA National Weather Service forecast for 32.593, -101.138 (grid MAF), issued Oct 26, 6:06 AM local time. High / low are air temperatures; water temperature is in the fishing section above. The “Air temp & weather” tile at the top refreshes live.

October 26 in history

24 years of level records

Last 10 days

DateLevel (ft)Change
Mon Oct 26 (today)2,226.33−0.03
Sun Oct 252,226.36−0.01
Sat Oct 242,226.37−0.02
Fri Oct 232,226.39−0.02
Thu Oct 222,226.41−0.01
Wed Oct 212,226.42−0.01
Tue Oct 202,226.43−0.01
Mon Oct 192,226.44+0.01
Sun Oct 182,226.43+0.03
Sat Oct 172,226.40+0.22

Daily mean of all readings that day; today is the average so far.

Nearby lakes & rivers

About this data

Gauge
USGS 08118000 — Lk J. B. Thomas nr Vincent, TX
Location
32.5932, -101.1382 · Texas
Measures
Lake/reservoir water-surface elevation above NGVD 1929
Daily statistics
2001–2026 (approved daily values)
Latest reading
Oct 26, 11:45 AM local time (provisional)
Page built
Oct 26, 2026 12:50 PM ET
Conservation pool
2,258.00 ft — Texas Water Development Board (Top of conservation pool)
Storage
41,510 of 199,931 acre-ft (conservation pool)
Also from
Texas Water Development Board

Source: U.S. Geological Survey Water Data for the Nation (USGS monitoring location page). Readings every 15–60 minutes; the newest values are provisional. Percentiles compare today’s reading with every past year’s daily mean for the same calendar date. Weather: NOAA National Weather Service.