National Weather Service Advanced Hydrologic Prediction Service

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Weather Forecast Office Tucson, AZ

Colorado Basin River Forecast Center

Hydrograph

River at a Glance

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About this graph

Tabular Data (UTC)

Tabular Data (MST)

Datum: Not Available

Metadata

Reliability of the Forecast: Forecast data shown here are guidance values only. Please refer to your local NWS office.

NOTE: Forecasts are not available for the Gila River at Coolidge Dam. Only observed stages are available for this point.

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Upstream Gauge

Downstream Gauge

Flood Categories (in feet)

Major Flood Stage:	2523
Moderate Flood Stage:	2521
Flood Stage:	2515
Action Stage:	2511
Low Stage (in feet):	-9999

Historic Crests
(1) 2,521.36 ft on 01/25/1993
(2) 2,520.30 ft on 02/28/1980
(3) 2,514.60 ft on 03/18/1985
(4) 2,514.10 ft on 10/07/1983

(P): Preliminary values subject to further review.

Recent Crests
(1) 2,521.36 ft on 01/25/1993
(2) 2,514.60 ft on 03/18/1985
(3) 2,514.10 ft on 10/07/1983
(4) 2,520.30 ft on 02/28/1980

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

Zoom Level:16

	Gauge Location	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.

Flood Impacts & Photos

If you notice any errors in the below information, please contact our Webmaster
2533	Coolidge Dam is overtopped. Flows of over 120000 cubic feet per second will cause massive bank erosion and damage near Winkleman.
2526	Homes threatened on the southeast side of winkleman. Resulting backup of san pedro river threatens numerous homes near dudleyville.
2523	Highway 77 bridge approaches overtopped.
2521	Water begins to backup into the San Pedro River towards Dudleyville.
2518	Highway 77 bridge abutments are threatened due to debris and bank erosion.
2515	Winkleman flats and other parks near the river are flooded.
2511	Precautionary evacuations in the RV Park in Winkleman Flats.

About This Location

Latitude: 33.175616° N, Longitude: 110.527878° W, Horizontal Datum: NAD83/WGS84

River Stage Reference Frame	Gauge Height	Flood Stage	Uses
NWS stage	0 ft	2515 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	2539.54	Not Available	Older USGS topographic maps, NGVD29 benchmarks
MSL	Not Available	Not Available	Older USGS topographic maps, MSL benchmarks
Other	Not Available	Not Available

Current/Historical Observations:

U.S. Geological Survey (USGS) Data and Site Info for Coolidge Dam

Resources

Hydrologic Resources

Additional Resources

Collaborative Agencies

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

National Weather Service
Tucson Weather Forecast Office
520 North Park Ave, Suite 304
Tucson, AZ 85719
(520) 670-6526
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Page last modified: 2-Nov-2020 7:30 PM

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