Soil moisture continues to decline in Illinois
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[August 23, 2013]
CHAMPAIGN -- Soil moisture
continued to decline across Illinois, with moisture levels at 2
inches being 27 percent lower on Aug. 15 than those from July 15,
according to Jennie Atkins, program manager of Water and Atmospheric
Resources Monitoring at the Prairie Research Institute, Illinois
State Water Survey, University of Illinois.
Soil moisture in the state averaged 0.17 water fraction by volume,
or wfv, at depths of 2 inches on Aug. 15, which is significantly
lower than the historical average of 0.25 wfv. Levels dropped
throughout the state, with central Illinois having the lowest
numbers, averaging 0.14 wfv, or just at the wilting point for most
Levels also declined at the deeper depths, with a
statewide average of 0.23 wfv at 20 inches, a 37 percent decline
from July 15.
Soil temperatures have declined slightly over the past month.
Temperatures at depths of 4 inches, measured under bare soil,
averaged 77.4 degrees F statewide, 5 degrees less than on July 15.
Declines were also seen at measurements made under sod, with
averages of 75.8 degrees and 74.6 degrees at depths of 4 and 8
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The Illinois State Water Survey's WARM program collects hourly
and daily weather and soil information at 19 stations across the
state. Daily and monthly summaries are available on the
WARM website and in the
Illinois Water and
Maps of soil temperatures and moisture levels are also available
on the WARM website.
[Text from file received from
State Water Survey]
The Illinois State Water Survey at the University of Illinois at
Urbana-Champaign, a division of the Prairie Research Institute, is
the primary agency in Illinois concerned with water and atmospheric