RUSS data from Shagawa Lake has been summarized to show the
average values of the measured parameters in the lake's surface
layer on each day.
Currently the RUSS unit is limited to an uppermost sampling
depth of about 0.7 meters. Typically, we will average values
for 1, 2, and 3 meters to calculate the mean "surface water" value.
available is a downloadable Excel
spreadsheet (it's about 60 Kbytes) that contains all of
the data and charts listed above.
also follow other surface trends such as secchi depth as annual
mean and based on the long-term
and the nutrients nitrogen and phosphorus. These graphs will
be updated as the data becomes available (i.e. when our laboratory
has a chance to run the sample analyses).
data should be considered "provisional" until otherwise
indicated. The data are undergoing several rounds of QA/QC
review and some of the data may be modified at a subsequent
date. We chose to leave the data hose on full blast whenever
possible to familiarize ourselves with the operation and maintenance
requirements of the RUSS units and to generate real data for
use in developing curricula and lesson plans. Data gaps were
associated with various RUSS system upgrades and occasional