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Climate in the Salt River Basin

Climate data from NOAA/NWS Co-op Network, Evaporation Pan and SNOTEL/Snowcourse stations are compiled in Table 5.2-1 and the locations are shown on Figure 5.2-3.  Figure 5.2-3 also shows precipitation contour data from the Spatial Climate Analysis Service (SCAS) at Oregon State University.  The Salt River Basin does not contain AZMET stations.  More detailed information on climate in the planning area is found in Section 5.0.3.  A description of the climate data sources and methods is found in Volume 1, Appendix A.

NOAA/NWS Coop Network

  • There are 13 NOAA/NWS Co-op network climate stations in the basin.  The average monthly maximum temperature occurs in July and ranges between 90.3°F at Mormon Flat and 59.2°F at Hawley Lake.  The average monthly minimum temperature occurs in January or December and ranges between 24.3°F at Hawley Lake and 52.6°F at Mormon Flat.

  • Highest average seasonal rainfall occurs in the summer (June-September) at most stations.  For the period of record used, the highest annual rainfall is 39.62 inches at Hawley Lake and the lowest is 13.78 inches at Globe.

Evaporation Pan

  • Refer to Table 5.2-1B
  • There are three evaporation pan sites in this basin.  Elevation at the stations range from 2,200 feet to 8,180 feet and the corresponding annual average evaporation ranges from 96.71 inches to 33.17 inches.


  • Refer to Table 5.2-1D
  • There are 11 snow measurement sites in the basin.  Five stations have been discontinued.

  • The site elevation ranges from 6,900 feet at Workman Creek and Workman Creek SNOTEL to 9,200 feet at Maverick Fork SNOTEL.

  • Seven sites record highest snowpack in March, three in February and one site, Workman Creek, has equally high snowpack in February and March.

  • Highest average snowpack is 11.3 inches at Hannagan Meadows SNOTEL.

SCAS Precipitation Data

  • See Figure 5.2-3
  • Additional precipitation data shows rainfall as high as 36 inches in several places in the basin and as low as 10 inches west of Tortilla Flat.

Click to view Table 5.2-1

Click for Table 5.2-1 Climate Data for

the Salt River Basin

Click to view Figure 5.2-3

Click for Figure 5.2-3 Salt River Basin Meteorological Stations and Annual Precipitation


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References and Supplemental Reading for the Salt River Basin

Colorado River Central Highlands Planning Area Download entire Central Highlands Planning Area Atlas in pdf Salt River Stream on White Mountain Apache Reservation