Scientific Investigations Report 2007–5038
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5038
Table 15. Monthly precipitation and dual-coefficient FAO Penman-Monteith recharge using daily values, 1995–2005, Sandpoint Experiment Station, Idaho.
[Western Regional Climate Center (2006a, 2006b), U.S. Department of Commerce (2006). Mean precipitation values are through December 31, 2005. Abbreviations: in., inch; ratio, recharge to precipitation ratio]
| 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | Period of record mean | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| January | Precipitation (in.) | 7.4 | 4.9 | 5.5 | 3.0 | 2.9 | 4.5 | 4.7 | 5.1 | 4.8 | 4.6 | 4.1 | 1.3 | 5.7 | 6.1 | 3.9 | 2.6 | 4.1 |
| Recharge (in.) | 6.5 | 4.5 | 4.5 | 2.3 | 2.4 | 3.8 | 4.1 | 4.4 | 4.0 | 3.9 | 3.3 | .55 | 4.8 | 5.4 | 3.2 | 1.8 | ||
| Ratio (percent) | 87 | 93 | 83 | 75 | 83 | 83 | 87 | 86 | 83 | 85 | 80 | 43 | 84 | 87 | 83 | 70 | ||
| February | Precipitation (in.) | 4.0 | 2.6 | 2.1 | .76 | 2.6 | 4.3 | 7.2 | 2.7 | 2.3 | 7.8 | 3.2 | 1.3 | 2.9 | 1.3 | 1.9 | .15 | 3.1 |
| Recharge (in.) | 3.1 | 1.4 | 1.0 | .26 | 1.6 | 3.6 | 5.9 | 1.8 | 1.1 | 6.5 | 1.9 | .55 | 2.1 | .86 | 1.0 | .00 | ||
| Ratio (percent) | 77 | 57 | 50 | 35 | 64 | 83 | 83 | 64 | 51 | 83 | 59 | 41 | 72 | 65 | 51 | 0 | ||
| March | Precipitation (in.) | 1.2 | 3.1 | .55 | 1.9 | 2.3 | 3.4 | .32 | 6.7 | 3.4 | 1.6 | 3.6 | 2.0 | 1.4 | 5.3 | 2.0 | 4.7 | 2.8 |
| Recharge (in.) | .34 | 1.77 | .00 | .31 | .90 | 1.58 | .00 | 4.99 | 1.40 | .06 | 1.86 | .17 | .17 | 3.32 | .29 | 2.86 | ||
| Ratio (percent) | 28 | 57 | 0 | 17 | 39 | 47 | 0 | 74 | 41 | 4 | 51 | 9 | 12 | 62 | 14 | 61 | ||
| April | Precipitation (in.) | 2.0 | 4.0 | 1.4 | 2.9 | 1.6 | 2.1 | 5.0 | 3.4 | 1.3 | .86 | 2.5 | 2.9 | 2.4 | 1.4 | 2.1 | 1.2 | 2.1 |
| Recharge (in.) | .54 | 1.5 | .00 | .07 | .00 | .26 | 1.7 | 1.1 | .00 | .00 | .58 | .60 | .97 | .00 | .13 | .20 | ||
| Ratio (percent) | 28 | 38 | 0 | 3 | 0 | 13 | 33 | 31 | 0 | 0 | 23 | 20 | 41 | 0 | 6 | 16 | ||
| May | Precipitation (in.) | 3.9 | 3.5 | .82 | 1.8 | 2.2 | 1.8 | 4.8 | 3.5 | 6.8 | 1.8 | 2.6 | 2.0 | 2.6 | 2.7 | 4.0 | 3.4 | 2.3 |
| Recharge (in.) | .21 | .26 | .00 | .00 | .00 | .13 | 1.8 | 1.1 | 3.6 | .00 | .00 | .62 | .35 | .00 | .95 | .57 | ||
| Ratio (percent) | 5 | 8 | 0 | 0 | 0 | 7 | 38 | 31 | 52 | 0 | 0 | 31 | 13 | 0 | 24 | 17 | ||
| June | Precipitation (in.) | 2.9 | 3.7 | 4.5 | 1.9 | 2.8 | 3.8 | 2.7 | 1.6 | 2.2 | 2.1 | 2.8 | 4.0 | 2.3 | 1.6 | 2.1 | 3.6 | 2.3 |
| Recharge (in.) | 1.5 | .18 | 1.9 | .00 | .02 | 1.1 | .62 | .18 | .01 | .19 | .80 | .67 | .01 | .00 | .00 | .00 | ||
| Ratio (percent) | 52 | 5 | 43 | 0 | 1 | 28 | 23 | 11 | 0 | 4 | 29 | 17 | 0 | 0 | 0 | 0 | ||
| July | Precipitation (in.) | 1.2 | 1.1 | 4.0 | 6.6 | .08 | .83 | .45 | 2.9 | 1.8 | 1.0 | .64 | .78 | .69 | .05 | .50 | 1.6 | 1.0 |
| Recharge (in.) | .00 | .00 | 1.2 | 2.8 | .00 | .00 | .00 | .16 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .36 | ||
| Ratio (percent) | 0 | 0 | 29 | 42 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 23 | ||
| August | Precipitation (in.) | 1.0 | .87 | .83 | 1.6 | .11 | 1.6 | 1.2 | .38 | .98 | 1.1 | .07 | .12 | .48 | .86 | 4.1 | .72 | 1.2 |
| Recharge (in.) | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .10 | .00 | .00 | .00 | .00 | .00 | 1.93 | .00 | ||
| Ratio (percent) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 0 | 0 | 0 | 0 | 0 | 47 | 0 | ||
| September | Precipitation (in.) | .00 | .05 | 1.6 | 1.3 | 1.4 | 1.9 | 1.6 | 3.5 | .72 | .27 | 2.0 | .37 | .56 | 2.0 | 2.8 | 1.5 | 1.7 |
| Recharge (in.) | .00 | .00 | .00 | .00 | .18 | .33 | .00 | 1.6 | .00 | .00 | .32 | .00 | .00 | .28 | 1.0 | .00 | ||
| Ratio (percent) | 0 | 0 | 0 | 0 | 12 | 18 | 0 | 45 | 0 | 0 | 16 | 0 | 0 | 14 | 37 | 0 | ||
| October | Precipitation (in.) | 5.4 | .86 | 1.6 | 1.3 | 3.3 | 4.9 | 4.8 | 4.3 | 1.2 | 2.5 | 1.4 | 4.3 | .40 | 3.5 | 3.4 | 3.8 | 2.6 |
| Recharge (in.) | 2.8 | .13 | .18 | .00 | 1.4 | 2.8 | 3.1 | 1.8 | .00 | .61 | .00 | 2.1 | .00 | 1.0 | 1.6 | 1.3 | ||
| Ratio (percent) | 51 | 15 | 11 | 0 | 42 | 58 | 65 | 42 | 0 | 24 | 0 | 49 | 0 | 27 | 48 | 35 | ||
| November | Precipitation (in.) | 4.6 | 4.8 | 5.0 | 1.5 | 5.4 | 5.3 | 5.5 | 2.8 | 6.3 | 4.1 | 2.1 | 5.1 | 3.6 | 5.4 | 5.3 | 3.4 | 4.3 |
| Recharge (in.) | 3.2 | 3.5 | 4.2 | .40 | 4.3 | 3.6 | 4.6 | 1.5 | 4.6 | 2.8 | 1.2 | 3.8 | 2.3 | 4.2 | 3.6 | 2.2 | ||
| Ratio (percent) | 69 | 74 | 85 | 27 | 81 | 68 | 84 | 55 | 73 | 69 | 57 | 75 | 64 | 78 | 68 | 66 | ||
| December | Precipitation (in.) | 3.8 | 3.5 | 3.1 | 5.1 | 5.7 | 5.3 | 8.8 | 2.6 | 7.9 | 6.5 | 1.5 | 6.6 | 5.8 | 3.8 | 3.6 | 4.6 | 4.6 |
| Recharge (in.) | 3.0 | 2.8 | 2.3 | 4.5 | 5.0 | 4.6 | 8.1 | 1.9 | 7.2 | 5.9 | 1.0 | 5.9 | 5.0 | 3.0 | 2.8 | 4.0 | ||
| Ratio (percent) | 79 | 80 | 74 | 88 | 88 | 87 | 92 | 75 | 91 | 91 | 65 | 89 | 86 | 80 | 77 | 86 | ||
| Annual | Precipitation (in.) | 37 | 33 | 31 | 30 | 30 | 40 | 47 | 39 | 40 | 34 | 26 | 31 | 29 | 34 | 36 | 31 | 32 |
| Recharge (in.) | 21 | 16 | 15 | 11 | 16 | 22 | 30 | 20 | 22 | 20 | 11 | 15 | 16 | 18 | 16 | 13 | ||
| Ratio (percent) | 56 | 49 | 50 | 36 | 52 | 55 | 64 | 52 | 55 | 58 | 41 | 49 | 54 | 53 | 46 | 43 | ||
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