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Climate in the Lake Mohave Basin

Climate data from NOAA/NWS Co-op Network, Evaporation Pan and AZMET stations are complied in Table 4.6-1 and the location is shown on Figure 4.6-3.  Figure 4.6-3 also shows precipitation data from the Spatial Climate Analysis Service (SCAS) at Oregon State University. The Lake Mohave Basin does not contain SNOTEL/Snowcourse stations.  More detailed information on climate in the planning area is found in Section 4.0.3.  A description of the climate data sources and methods is found in Volume 1, Appendix A.  For a link to the web site for each climate data source click its header.

NOAA/NWS Coop Network

  • Refer to Table 4.6-1A
  • There are three NOAA/NWS Co-op network climate stations in the basin.   The average monthly maximum temperature occurs in July at all stations and is approximately 95°F.  The average monthly minimum temperature occurs in January or December and ranges between 51.4°F at Willow Beach and 54.3°F at Bullhead City.

  • Highest average seasonal rainfall occurs in the winter (January – March).  For the period of record used, the highest annual rainfall is 5.84 inches at Bullhead City and the lowest is 4.63 inches at Davis Dam #2.

Evaporation Pan

  • Refer to Table 4.6-1B
  • There is one site at Davis Dam #2 at 660 feet with an annual evaporation rate of 154.32 inches.
  • This is the only evaporation pan station in the planning area.


  • Refer to Table 4.6-1C
  • There are two AZMET stations in the basin at Mohave and Mohave #2.
  • Average annual evaporation at the Mohave site, located at 495 feet, is 81.61 inches.
  • Average annual evaporation at the Mohave #2 site, located at 432 feet, is 80.93 inches.
  • These are the only AZMET stations in the planning area.

SCAS Precipitation Data

  • Additional precipitation data shows rainfall as high as 12 inches in the Black Mountains near Oatman, and as low as zero inches in a number of areas along the boundary with Nevada.  This is the lowest average annual precipitation in the planning area.

Click to view Table 4.6-1

Click for Table 4.6-1 Climate in the

Lake Mohave Basin

Click to view Figure 4.6-3

Click for Figure 4.6-3 Lake Mohave Basin Meteorological Stations and Annual Precipitation


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