Climate data from a NOAA/NWS Co-op Network station is complied in Table 3.7-1  and the location is shown on Figure 3.7-3.  Figure 3.7-3 also shows precipitation contour data from the Spatial Climate Analysis Service (SCAS) at Oregon State University. The Duncan Valley Basin does not contain Evaporation Pan, AZMET and SNOTEL/Snowcourse stations.  More detailed information on climate in this basin is found in Section 3.0.3. 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 Co-op Network

• Refer to Table 3.7-1A.

• There is one NOAA/NWS Co-op network station in the basin at Duncan located at 3,660 feet.  The average maximum temperature at the station is 80.2°F and average minimum temperature is 41.3°F.

• The highest seasonal precipitation at this station, 5.50 inches, occurs in the summer (July-September) and the lowest, 1.00 inches, occurs in the spring (April-June).

SCAS Precipitation Data

• See Figure 3.7-3

• Other precipitation data shows rainfall as high as 20 inches in the Peloncillo Mountains and as low as 10 inches in the vicinity of Duncan.

• This basin contains the smallest variation in precipitation in the planning area, only 10 inches separates the areas of highest average annual precipitation from the lowest.

Click for Table 3.7-1 Climate Data for the

Duncan Valley Basin

Click for Figure 3.7-3 Duncan Valley Basin

Meteorological Stations and Annual Precipitation

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