University of California
Manure Nutrient Management
Excel Templates for Pond Drop Tables
If you are using pond drop to estimate the amount on lagoon nutrients applied, this method can be more accurate if you take into consideration the decrease in pond surface area as the pond is lowered. Enter the run and rise of the pond side slope and the pond dimensions on this Excel template, and use the table it creates to give you the surface area at different levels. Multiply the inches of drop by the area of the pond nearest the midpoint of the drop to get acre-inches applied.
Pond Surface Area by Water Level Spreadsheet Template Rectangle
Pond Surface Area by Water Level Spreadsheet Template Trapezoid
Tips on how to measure pond dimensions: