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. 65% chance the lake is 1 ft0.3 m or more above today's level on Nov 9.
- Rain, past 7 days
- 1.3 in34 mm watershed average
- Rain forecast, next 7 days
- 0.6 in15 mm normal 0.3 in6 mm
Statistical estimate, not safety, boating, or water-quality advice. For ramps, closures and advisories, check the lake operator.
Map
Map of Amistad Reservoir with the dam and 15 public boat ramps.
- Dam
- 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 | 1063.0324.01 | 1063.4324.12 | 1064.8324.57 |
| Nov 9 | 1063.3324.08 | 1064.1324.33 | 1067.4325.34 |
| Nov 25 | 1063.3324.09 | 1064.8324.54 | 1071.3326.53 |
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
- 0.62 ft0.19 m Assuming the level stays the same was off by 0.95 ft0.29 m
- Actual level inside our range
- 81% of 430 tests; the range is built to catch 8 in 10
- When we said a rise was possible (20–40%)
- 31% of those 29 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.
About Amistad Reservoir
Amistad Reservoir (Lake Amistad) sits on the Rio Grande where the Devils River joins, about 12 miles northwest of Del Rio. Amistad Dam was completed in 1969 and is run jointly by the United States and Mexico through the International Boundary and Water Commission; its name is Spanish for “friendship”. The U.S. shore is part of Amistad National Recreation Area, and the next big reservoir downstream is Falcon.
- Full pool (conservation)
- 1117.0 ft340.46 m
- Highest level since 1971
- 1135.6 ft346.14 m, Sep 1974
- Lowest level since 1971
- 1047.0 ft319.11 m, Jul 2024
- Surface area at normal pool
- 89,000 acres36,017 ha
- Conservation storage
- 1,813,408 acre-feet2,237 million m³
- Dam
- Amistad Dam, 1969
- River or creek
- Rio Grande
- County
- Val Verde
- Owner
- International Boundary and Water Commission;Mexico Comision Internacional de Limites y Aguas
Elevations are feetmeters above sea level (NGVD29).
Common questions
Is Amistad Reservoir full right now?
On Oct 26 it was 1062.9 ft, 54.1 ft below full pool (1117.0 ft), holding 47% of its conservation storage.On Oct 26 it was 323.96 m, 16.50 m below full pool (340.46 m), holding 47% of its conservation storage.
Is Amistad Reservoir going up or down?
The middle estimate for Nov 9 is up about 1.2 ft, with an 8 in 10 chance it ends between 1063.3 ft and 1067.4 ft. The chance it ends 1 ft or more higher than today is 65%. Heavy rain can change that quickly.The middle estimate for Nov 9 is up about 0.37 m, with an 8 in 10 chance it ends between 324.08 m and 325.34 m. The chance it ends 0.3 m or more higher than today is 65%. 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.