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Hydrograph River at a Glance Download
Bill Williams River at Alamo Lake Pool (ft)Flow (kcfs)Highest Observation: 1112.95 ft at 1:00PM Oct 13, 2021Observed: 1112.94 ft at 2:00PM Oct 13, 2021Observed: 1112.94 ft at 3:00PM Oct 13, 2021Observed: 1112.94 ft at 4:00PM Oct 13, 2021Observed: 1112.94 ft at 5:00PM Oct 13, 2021Observed: 1112.94 ft at 6:00PM Oct 13, 2021Observed: 1112.94 ft at 7:00PM Oct 13, 2021Observed: 1112.94 ft at 8:00PM Oct 13, 2021Observed: 1112.94 ft at 9:00PM Oct 13, 2021Observed: 1112.93 ft at 10:00PM Oct 13, 2021Observed: 1112.94 ft at 11:00PM Oct 13, 2021Observed: 1112.93 ft at 12:00AM Oct 14, 2021Observed: 1112.93 ft at 1:00AM Oct 14, 2021Observed: 1112.94 ft at 2:00AM Oct 14, 2021Observed: 1112.93 ft at 3:00AM Oct 14, 2021Observed: 1112.94 ft at 4:00AM Oct 14, 2021Observed: 1112.93 ft at 5:00AM Oct 14, 2021Observed: 1112.93 ft at 6:00AM Oct 14, 2021Observed: 1112.93 ft at 7:00AM Oct 14, 2021Observed: 1112.92 ft at 8:00AM Oct 14, 2021Observed: 1112.93 ft at 9:00AM Oct 14, 2021Observed: 1112.93 ft at 10:00AM Oct 14, 2021Observed: 1112.92 ft at 11:00AM Oct 14, 2021Observed: 1112.92 ft at 12:00PM Oct 14, 2021Observed: 1112.91 ft at 1:00PM Oct 14, 2021Observed: 1112.91 ft at 2:00PM Oct 14, 2021Observed: 1112.91 ft at 3:00PM Oct 14, 2021Observed: 1112.91 ft at 4:00PM Oct 14, 2021Observed: 1112.91 ft at 5:00PM Oct 14, 2021Observed: 1112.9 ft at 6:00PM Oct 14, 2021Observed: 1112.9 ft at 7:00PM Oct 14, 2021Observed: 1112.9 ft at 8:00PM Oct 14, 2021Observed: 1112.9 ft at 9:00PM Oct 14, 2021Observed: 1112.91 ft at 10:00PM Oct 14, 2021Observed: 1112.9 ft at 11:00PM Oct 14, 2021Observed: 1112.9 ft at 12:00AM Oct 15, 2021Observed: 1112.9 ft at 1:00AM Oct 15, 2021Observed: 1112.89 ft at 2:00AM Oct 15, 2021Observed: 1112.89 ft at 3:00AM Oct 15, 2021Observed: 1112.9 ft at 4:00AM Oct 15, 2021Observed: 1112.89 ft at 5:00AM Oct 15, 2021Observed: 1112.9 ft at 6:00AM Oct 15, 2021Observed: 1112.89 ft at 7:00AM Oct 15, 2021Observed: 1112.9 ft at 8:00AM Oct 15, 2021Observed: 1112.9 ft at 9:00AM Oct 15, 2021Observed: 1112.89 ft at 10:00AM Oct 15, 2021Observed: 1112.89 ft at 11:00AM Oct 15, 2021Observed: 1112.88 ft at 12:00PM Oct 15, 2021Observed: 1112.88 ft at 1:00PM Oct 15, 2021Observed: 1112.88 ft at 2:00PM Oct 15, 2021Observed: 1112.87 ft at 3:00PM Oct 15, 2021Observed: 1112.87 ft at 4:00PM Oct 15, 2021Observed: 1112.87 ft at 5:00PM Oct 15, 2021Observed: 1112.87 ft at 6:00PM Oct 15, 2021Observed: 1112.87 ft at 7:00PM Oct 15, 2021Observed: 1112.86 ft at 8:00PM Oct 15, 2021Observed: 1112.87 ft at 9:00PM Oct 15, 2021Observed: 1112.87 ft at 10:00PM Oct 15, 2021Observed: 1112.87 ft at 11:00PM Oct 15, 2021Observed: 1112.87 ft at 12:00AM Oct 16, 2021Observed: 1112.88 ft at 1:00AM Oct 16, 2021Observed: 1112.87 ft at 2:00AM Oct 16, 2021Observed: 1112.87 ft at 3:00AM Oct 16, 2021Observed: 1112.87 ft at 4:00AM Oct 16, 2021Observed: 1112.87 ft at 5:00AM Oct 16, 2021Observed: 1112.87 ft at 6:00AM Oct 16, 2021Observed: 1112.86 ft at 7:00AM Oct 16, 2021Observed: 1112.86 ft at 8:00AM Oct 16, 2021Observed: 1112.86 ft at 9:00AM Oct 16, 2021Observed: 1112.85 ft at 10:00AM Oct 16, 2021Observed: 1112.85 ft at 11:00AM Oct 16, 2021Observed: 1112.85 ft at 12:00PM Oct 16, 2021ALMA3(plotting HPIRG) Graph Created (12:19PM Oct 16, 2021)ObservedLatest observed value: 1112.85 ft at 12:00 PM MST 16-Oct-2021. Flood Stage is 1235 ft
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About this graph
Tabular Data (UTC)
Tabular Data (MST)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts are not available for the Bill Williams River at Alamo Lake. Only observed stages are available for this point.
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Flood Categories (in feet)
Major Flood Stage: 1265
Moderate Flood Stage: 0
Flood Stage: 1235
Action Stage: 1235
Low Stage (in feet): 0

Historic Crests
(1) 46.00 ft on 02/07/1937
(2) 39.60 ft on 09/06/1939
(3) 30.80 ft on 08/29/1951
(4) 23.00 ft on 03/14/1941
(5) 22.50 ft on 03/02/1941

(P): Preliminary values subject to further review.

Recent Crests
(1) 30.80 ft on 08/29/1951
(2) 23.00 ft on 03/14/1941
(3) 22.50 ft on 03/02/1941
(4) 39.60 ft on 09/06/1939
(5) 46.00 ft on 02/07/1937

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
Zoom Level:16
KML Image
Gauge LocationGauge Map Marker
 Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
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If you notice any errors in the below information, please contact our Webmaster
1265 Water reaches the embankment crest elevation at the top of the dam. The dam crest length is 283 feet.
1235 Water reaches the spillway crest elevation. Crest length is 284 feet.
About This Location Collapse

Latitude: 34.230854° N, Longitude: 113.608819° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 1235 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(gauge height = flood stage)		 Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other 982 ft 2217 ft  

Current/Historical Observations:
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
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Phoenix Weather Forecast Office
2727 E Washington St PAB 1TA
Phoenix, AZ 85034
(602) 275-0073
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