Lake Cisco water level — Texas
Lake Cisco in Texas was last measured at 1,503.64 ft (datum NGVD29), as of Aug 31, 2026, 2:30 AM (UTC-05:00) (USGS Water Services). Over its recent trend window the level has been falling (−0.7 ft). This reading is provisional and subject to revision.
- % of conservation pool full
- Not reported
- Storage
- Not reported
- Recent trend
- ↓Falling
−0.7 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 08086215, 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 27 sq mi of contributing watershed.
The dam behind Lake Cisco
Lake Cisco is held back by Williamson Dam , a buttress dam — a thin upstream face braced by a row of supports behind it , standing 96 ft high and running 1,064 ft along its crest , built across SANDY CREEK in Eastland County . It was completed in 1923 , and is owned by CITY OF CISCO (a local government owner) , to a design credited to ELROD ENGINEERING.
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;recreation.
It is founded on rock;soil, with a earth core. 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 270 ft wide. Its outlet works use slide (sluice gate)2;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. Its most recent condition assessment was fair: sound under normal loading, though a rare or extreme event could expose a deficiency. That assessment is dated 09/26/2024.
At its normal pool the reservoir covers about 1,817 acres. NID records a maximum storage of 32,800 acre-ft against a normal storage of 26,000 acre-ft. Its maximum discharge capacity is 25,600 cubic feet per second. It is regulated by TCEQ.
Dam facts: National Inventory of Dams record TX01409 , 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 Cisco compares nearby
5 of 6 nearby lakes with a current trend are also falling right now.
Nearby lakes
The six nearest published lakes by centroid distance (great-circle) — cross-state neighbors included.
| Lake | State | Level | Distance |
|---|---|---|---|
| Lake Eastland | TX | 1,455.35 ft | 14 km |
| Leon Reservoir | TX | 1,371.38 ft | 30 km |
| Hubbard Creek Reservoir | TX | 1,166.79 ft | 44 km |
| Lake Coleman | TX | 1,713.27 ft | 64 km |
| Possum Kingdom Lake | TX | 995.28 ft | 66 km |
| Lake Brownwood | TX | 1,422.15 ft | 67 km |
Frequently asked questions
- What is the current water level of Lake Cisco?
- As of Aug 31, 2026, 2:30 AM (UTC-05:00), the pool elevation was 1,503.64 ft (datum NGVD29), provisional and subject to revision. See the trend chart above for the recent direction.
- Is Lake Cisco 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 08086215, 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.