Virginia.gov

Determining Pond Size

(A range finder can be used to determine distance)

Square or rectangular pond = (length x width)/43,560
Round pond = (radius2 x 3.14)/43,560
radius - is the distance from the shore to the center of a round pond
radius2 - is the value of the radius multiplied times itself
Triangular pond = ((length of dam x total length of pond)/2)/43,560

Average Depth can be determined by making 4 transects per acre of water, recording depth measurements at three foot intervals along each transect and then averaging all the numbers.