Climate data from NOAA/NWS Co-op Network and SNOTEL/Snowcourse stations are compiled in Table 5.3-1 and the locations are shown on Figure 5.3-3. Figure 5.3-3 also shows precipitation contour data from the Spatial Climate Analysis Service (SCAS) at Oregon State University. The Tonto Creek Basin does not contain Evaporation Pan or 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. For a link to the climate data source web page click its header.
NOAA/NWS Coop Network
- Refer to Table 5.3-1D
There are two stations in this basin, Promontory Butte and Promontory (SNOTEL). The Promontory Butte station was discontinued in 1989.
Both stations are at an elevation of 7,930 feet and record highest average snowpack in April.
The highest average snowpack at Promontory Butte is 15.1 inches and at Promontory (SNOTEL) is 13.8 inches. Snowpack is measured in inches of snow water content. Ten inches of fresh snow can contain as little as 0.10 inches of water or up to 4 inches depending on a number of factors. The majority of U.S. snows fall with a water-to-snow ratio of between 0.04 and 0.10. (NSIDC, 2006)
SCAS Precipitation Data
Click for Table 5.3-1 Climate Data for the Tonto Creek Basin
Click for Figure 5.3-3 Tonto Creek Basin Meteorological Stations and Annual Precipitation