It looks like it's lower in the middle. grin

How long is the dam? Do you have garden hose that's as long as the dam is? You can use the garden hose to make a water level.


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[Linked Image from lh6.ggpht.com]
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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).