Outlook
Middle estimate, with the range the level has an 8 in 10 chance of landing in. The bars share one scale: change from today.
Higher chance of a rise. 35% chance the lake is 1 ft0.3 m or more above today's level on Nov 9.
- Rain, past 7 days
- 0.4 in10 mm watershed average
- Rain forecast, next 7 days
- 1.7 in43 mm normal 0.3 in8 mm
Statistical estimate, not safety, boating, or water-quality advice. For ramps, closures and advisories, check the lake operator.
Map
Map of Lake Alan Henry with the dam, level gauge and 3 public boat ramps.
- Dam
- Level gauge
- Public boat ramp
Ramp locations from Texas Parks and Wildlife. Whether a ramp is open depends on the lake level; check the operator.
Level and outlook
FeetMeters above sea level
- Measured
- Middle estimate
- 8 in 10 range
- Full pool
Show outlook as a table
| Date | Low end | Middle | High end |
|---|---|---|---|
| Nov 2 | 2209.3673.40 | 2209.6673.47 | 2211.2673.96 |
| Nov 9 | 2209.2673.37 | 2209.6673.47 | 2213.1674.54 |
| Nov 25 | 2208.8673.25 | 2209.6673.49 | 2213.4674.64 |
How well this outlook has done here
We tested the 2-week outlook on past years at this lake, as if made once a week with only what was known that day.
- On average it was off by
- 0.33 ft0.10 m Assuming the level stays the same was off by 0.47 ft0.14 m
- Actual level inside our range
- 68% of 432 tests; the range is built to catch 8 in 10
- When we said a rise was possible (20–40%)
- 36% of those 25 times it ended 1 ft0.3 m or more higher
The rise chance uses the same threshold for every lake: 1 ft (0.3048 m).
Connected lakes
Water from upstream lakes flows into this one; water released here flows on downstream.
Nearby lakes
Closest lakes in a straight line, with today's level.
- White River Reservoir27 mi44 km away · 2351.8 ft716.83 m · 27%
- Lake J. B. Thomas33 mi53 km away · 2226.3 ft678.59 m · 20%
- Lake Colorado City50 mi81 km away · 2058.7 ft627.48 m · 53%
- Champion Creek Reservoir55 mi89 km away · 2063.8 ft629.03 m · 45%
- Lake Sweetwater61 mi98 km away · 2090.2 ft637.10 m · 16%
- Oak Creek Reservoir84 mi135 km away · 1973.2 ft601.44 m · 13%
About Lake Alan Henry
Lake Alan Henry is a reservoir on the Double Mountain Fork of the Brazos River in Garza and Kent counties, near Justiceburg and roughly 45–65 miles southeast of Lubbock. It was formed by John T. Montford Dam in 1993 and is owned by the City of Lubbock as a water supply. It is far up the Brazos basin; the next lake downstream in this list is Possum Kingdom.
- Full pool (conservation)
- 2220.0 ft676.66 m
- Highest level since 2000
- 2229.3 ft679.49 m, Jul 2010
- Lowest level since 2000
- 2201.2 ft670.94 m, Sep 2014
- Surface area at normal pool
- 2,884 acres1,167 ha
- Conservation storage
- 96,207 acre-feet119 million m³
- Dam
- John T Montford Dam, 1993
- River or creek
- Double Mountain Fork Brazos R
- County
- Garza
- Owner
- City of Lubbock
Elevations are feetmeters above sea level (NGVD29).
Common questions
Is Lake Alan Henry full right now?
On Oct 26 it was 2209.4 ft, 10.6 ft below full pool (2220.0 ft), holding 73% of its conservation storage.On Oct 26 it was 673.43 m, 3.22 m below full pool (676.66 m), holding 73% of its conservation storage.
Is Lake Alan Henry going up or down?
The middle estimate for Nov 9 is about steady, with an 8 in 10 chance it ends between 2209.2 ft and 2213.1 ft. The chance it ends 1 ft or more higher than today is 35%. Heavy rain can change that quickly.The middle estimate for Nov 9 is about steady, with an 8 in 10 chance it ends between 673.37 m and 674.54 m. The chance it ends 0.3 m or more higher than today is 35%. Heavy rain can change that quickly.
Where does this data come from?
Daily levels come from the Texas Water Development Board and lake operators. The outlook is our own statistical model, using recent levels and forecast rain over the watershed.