Inyo County
Water Department

The Monitor 1998



Owens Valley Precipitation
Sally Manning, Vegetation Scientist

1998 was a wet year. ICWD staff continued to collect precipitation data at seven rain gages located in the Owens Valley during the 1998 water year (October 1997 - September 1998). Average precipitation during the period was 7.85 inches, slightly greater than the average for 1995 (Table 4). Because these are relatively new rain gage stations, it is not possible to compare the data directly to a long-term average for the sites at which they are located. At the Bishop airport (not shown in Table 4), the long-term average precipitation was 5.34 inches; the water year total for 1998 was 9.77 inches and the winter amount was 7.57.
Rain Gage

Precipitation (inches)


RG-1, east of Fish Slough
1993 1994 1995 1996 1997 1998
5.94 3.40 7.60 4.51 4.66 6.09
RG-2, near Laws 6.29 3.62 7.80 4.55 4.91 7.34
RG-3, southeast of Bishop 7.21 4.34 8.87 4.29 6.85 9.98
RG-4, south of Big Pine 8.29 4.24 9.76 6.85 8.33 8.99
RG-5, near Goose Lake 6.83 2.15 7.07 5.64 7.02 7.47
RG-6, near Blackrock 9.00 2.95 8.67 7.07 8.68 10.01
RG-7, east of Union Wash 5.00 1.61 4.88 2.14 4.35 5.06
Rain Gage Average 6.94 3.19 7.81 5.01 6.40 7.85
Average Precipitation Occurring Oct.1-Apr.15 ("Winter") 6.85 1.81 6.76 4.45 4.67 5.81

Table 4. Precipitation totals recorded at each of the county rain gages for water years 1993 through 1998. A water year runs from October 1 through September 30.

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