The
table below summarizes information about the Grindstone Lake basin.
The lake
has been "sliced" into layers, or slabs, of water that are
2 meters (6.5 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 46.9 x 106 m3 (cubic
meters). The surface area of the lake was determined by GIS from the
Landuse maps(lit cite) and equals 216 hectares (2.16 x 106 m2).
To estimate
the area at the top of any layer, use the following formula: Regression
of : Area (hectares) @ top of layer vs depth of layer top (meters)
A(z) = (-5.1998)*z + 219.35.
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) = (-0.5.181)*z
+ 22.158.
