April 2008

 

Overview

Table 1 is a summary of monthly averages and totals at selected stations throughout the state. Table 2 lists daily temperatures and precipitation for most of the locations listed in Table 1. In Table 3, monthly precipitation totals throughout the state are listed.

Basin Summary

Here is a summary of water indicators at the end of the month, by river basin:

Precipitation Snow Stream Flow SWSI*
BASIN

(1)

(2)
(3)
(4)
  (5)

(6)

(7)

OWYHEE 16 64 103 120 47 466 -0.6
MALHEUR 29 67 104 188 21 7 -0.7
GRAND RONDE, POWDER, BURNT 58 113 110 169 88.5 107 -0.5
UMATILLA, WALLA WALLA, WILLOW 35 92 108 176 84 65 -0.3
UPPER JOHN DAY 46 89 103 182 73 142 0.7
UPPER DESCHUTES, CROOKED 45 92 115 186 46 58 0.9
LOWER DESCHUTES, HOOD RIVER 95 113 119 324 92 18 1.4
WILLAMETTE 92 104 111 0 92 -11 1.5
ROGUE, UMPQUA 71 108 111 179 142 -24 1.1
KLAMATH 62 93 107 168 62 84 -1.0
LAKE COUNTY, GOOSE LAKE 44 91 91 107 79 513 -0.8
HARNEY 39 72 98 109 72 207 -0.3
NORTH COAST 109 95 79 0 91 -20 0.6
SOUTH COAST 89 97 n.a. n.a. 66 -27 1.2

* Last month’s numbers; current data unavailable at press time

n.a. Not available
(1) Percent of normal April precipitation, from NOAA Cooperative sites
(2) Percent of normal seasonal precipitation (since Oct. 1), from NOAA Cooperative sites
(3) Percent of normal seasonal precipitation, from Natural Resources Conservation Service (NRCS) SNOTEL sites
(4) Percent of normal snow water equivalent, from NRCS SNOTEL sites
(5) Percent of normal April stream flow, from U.S. Geological Survey (USGS)
(6) Percent of normal seasonal stream flow (since Oct. 1), from USGS
(7) Surface Water Supply Index, from NRCS (-4 = very dry, 0 = normal, +4 = very wet)

 

 

Oregon Climate Service
Oregon State University, Strand 326
Corvallis, Oregon 97331
Phone: (541) 737-5705
Fax: (541) 737-5710
E-mail: oregon@coas.oregonstate.edu
Web: http://www.ocs.oregonstate.edu