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Angostura Reservoir

Critical Stages
3187.2' - Action
Flood
Moderate
Major

Latest Observation

Updated: 8:15 AM MST 12/16/25

Status: No Flooding

Stage: 3172.57 ft

Flow: -999 kcfs

Forecast

Forecast not available for this location.

TimeStage (ft)Flow (kcfs)
9:15 AM 12/16 3172.55 -999
9:00 AM 12/16 3172.56 -999
8:45 AM 12/16 3172.55 -999
8:30 AM 12/16 3172.55 -999
8:15 AM 12/16 3172.57 -999
8:00 AM 12/16 3172.57 -999
7:45 AM 12/16 3172.55 -999
7:30 AM 12/16 3172.56 -999
7:00 AM 12/16 3172.54 -999
6:45 AM 12/16 3172.55 -999
6:15 AM 12/16 3172.56 -999
6:00 AM 12/16 3172.55 -999
5:45 AM 12/16 3172.57 -999
5:00 AM 12/16 3172.57 -999
4:45 AM 12/16 3172.55 -999
4:30 AM 12/16 3172.56 -999
4:15 AM 12/16 3172.57 -999
3:15 AM 12/16 3172.57 -999
3:00 AM 12/16 3172.54 -999
2:45 AM 12/16 3172.57 -999
2:30 AM 12/16 3172.55 -999
2:00 AM 12/16 3172.57 -999
1:45 AM 12/16 3172.55 -999
12:00 AM 12/16 3172.55 -999
11:45 PM 12/15 3172.56 -999
11:30 PM 12/15 3172.56 -999
11:00 PM 12/15 3172.56 -999
10:45 PM 12/15 3172.55 -999
10:30 PM 12/15 3172.55 -999
10:15 PM 12/15 3172.54 -999
Hydrograph for Angostura Reservoir
3199' - Dam crest elevation.
3198.1' - Maximum Water Surface or Top of Surcharge Capacity.
3195' - Discharge from the reservoir is about 120,000 cfs with automatic control; higher with high inflows and manual control.
3187.2' - Top of active conservation elevation.
3163' - Elevation at top of inactive storage.
3062' - Streambed elevation at dam axis.
DateStage (ft)
May 20, 1978 3189.37
Jun 18, 1962 3189
May 25, 1971 3188.42
Jun 17, 1967 3188
May 27, 1957 3187.91
Jun 19, 1965 3187.9
Jun 11, 1986 3187.63
Jul 20, 1969 3187.63
Jun 2, 1991 3187.62
Jun 11, 1968 3187.57
May 2, 1963 3187.45
Aug 1, 1958 3187.41
May 20, 1955 3187.37
Apr 23, 2000 3187.33
Apr 16, 1974 3187.31
Mar 17, 1966 3187.31
Jun 21, 1964 3187.3
May 9, 1973 3187.29
May 25, 2010 3187.27
Jun 30, 1972 3187.26

Data provided by the National Weather Service.