State
Level
Minnesota
Using
Landsat satellite
imagery, we recently
used procedures
explained in the Metro
Level section
to assess the
water clarity
of
all lakes 20
acres
or larger for
the entire state
of Minnesota.
For
this state scale
study, we used
19 Landsat satellite
images acquired
between 1990 and
1992, along
with Secchi disk
measurements collected
on the ground. After
the model was
applied, the resulting
R2 value
was 0.89. Click
on Landsat vs.
Secchi Disk Measurements
in the right
column to view
this relationship.
Click
on Lake Water
Clarity for the
Early 1990s to
view lake water
clarity for the
entire state of
Minnesota. The
results show excellent
potential for
using Landsat
data to monitor
lake water quality
at scales that
are not feasible
by conventional
measurement methods.
At
this state
scale, what
can influence
lake water
clarity?
|
