The table
below summarizes information about the Ice Lake basin. The lake has
been "sliced" into layers, or slabs, of water that are
2 meters (6.6 feet) thick. The table reports the volume of each layer
and the surface area at the middle of each layer. Adding up the layers
yields a total volume of 11.6 x 105 m3 (cubic
meters). The surface area of the lake was determined by GIS from
the Landuse maps Lake Summaries and
equals 16.6 hectares (= 1.66 x 105 m2).
To estimate
the area at the top of any layer, use the following formula:
Regression
of: Area (hectares) at top of layer vs depth of layer top (meters)
A(z)
= (-1.184)*z + 16.58
where area(ha) is for the top of the layer and z is
the depth in meters at the middle of the layer
To estimate
the volume of any
1 meter thick layer, use the following formula:
Regression
of: Volume of 1m layers versus mid-layer depth (z)
V(z)
= (-0.113)*z + 1.633
where
V(z) is the volume of the layer
