Mr. Williams had access to a program that could extrapolate if you built the lake in the 50's if it would fill up or not based on historical data. here is the spreadsheet:

https://www.dropbox.com/s/qiwoqngfiqxcu2t/10acrelakedata%281%29.pdf?dl=0
Attachments
10acrelakedata(1).xlsx (49.51 KB, 1249 downloads)