Lake Mexia water level — Texas
Lake Mexia in Texas was last measured at 446.93 ft (datum NGVD29), as of Aug 31, 2026, 3:15 AM (UTC-05:00) (USGS Water Services). Over its recent trend window the level has been falling (−0.8 ft). This reading is provisional and subject to revision.
- % of conservation pool full
- Not reported
- Storage
- Not reported
- Recent trend
- ↓Falling
−0.8 ft over the trend window
Recent trend
Readings this station published between Jun 2, 2026 and Aug 31, 2026 — a 89-day window — downsampled for display.
Data: USGS Water Services (waterservices.usgs.gov) and USACE CWMS Data (cwms-data.usace.army.mil), retrieved 2026-08-31. Both public domain (a work of the U.S. Government, 17 U.S.C. §105).
Source: USGS site 08110300 · USACE SWF/BSAT2, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for this lake →
About this gauge's record
This site's drainage basin covers approximately 196 sq mi of contributing watershed. USACE's continuous elevation record for this project begins in 2014 .
The dam behind Lake Mexia
Lake Mexia is held back by Bistone Dam , an earthfill embankment, holding the pool back by sheer mass and an impervious core rather than by the strength of concrete , standing 50 ft high and running 1,645 ft along its crest , built across NAVASOTA RIVER in Limestone County . It was completed in 1961 , and is owned by BISTONE MWS DISTRICT (a local government owner) , to a design credited to KOCH FOWLER & GRAFE INC.
Its recorded primary purpose is water supply — delivering water to its customers comes first, so drawdown here follows demand as much as it follows rainfall . It also serves water supply;other;recreation.
Its spillway is ungated: once the pool reaches the crest, water leaves on its own and the operator cannot hold it back. The spillway opening is 520 ft wide. Its outlet works use uncontrolled1.
NID classes it high hazard potential. That describes what a failure would cost downstream — loss of life would be expected — and says nothing about how likely a failure is, or what condition the dam is in. It has not been assigned a condition rating. That assessment is dated 03/14/2024.
At its normal pool the reservoir covers about 1,009 acres. NID records a maximum storage of 44,321 acre-ft against a normal storage of 4,687 acre-ft. Its maximum discharge capacity is 161,456 cubic feet per second. It is regulated by TCEQ.
Dam facts: National Inventory of Dams record TX01061 , filed by Texas — U.S. Army Corps of Engineers, public domain. Water levels above come from USGS Water Services and are a separate source. (How this dam was matched to this gauge →)
How Lake Mexia compares nearby
All 6 nearby lakes with a current trend are also falling, suggesting a regional pattern rather than an operation specific to this dam.
Nearby lakes
The six nearest published lakes by centroid distance (great-circle) — cross-state neighbors included.
| Lake | State | Level | Distance |
|---|---|---|---|
| Navarro Mills Lake | TX | 422.73 ft | 36 km |
| Lake Limestone at Lake Limestone Marina | TX | 361.12 ft | 38 km |
| Lake Limestone | TX | 362.05 ft | 43 km |
| Halbert Lake | TX | 365.23 ft | 50 km |
| Richland-Chambers Reservoir | TX | 312.96 ft | 56 km |
| Waco Lake | TX | 459.96 ft | 59 km |
Frequently asked questions
- What is the current water level of Lake Mexia?
- As of Aug 31, 2026, 3:15 AM (UTC-05:00), the pool elevation was 446.93 ft (datum NGVD29), provisional and subject to revision. See the trend chart above for the recent direction.
- Is Lake Mexia full right now?
- Its managing agency does not publish a %-of-conservation-pool-full figure for this lake, so we show the bare level rather than estimate one.
- Where does this data come from?
- From USGS site 08110300 · USACE SWF/BSAT2, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00).
More in Texas
See every lake tracked in Texas, or read the methodology behind these figures.