So do you test your compaction when building pond dams? Just curious is all. I have never heard of a contractor building a pond doing that, usually only see the tester come out on federal or state funded jobs where large fills are being put down. It may be the difference in our locations but we don't get many droughts here, and it is rare to have too little moisture in the type of material we usually encounter. I whole heartedly agree that very dry conditions can change how effective any machine is at compacting. As I said, it's perspective, if the material dries out before you have it compacted, it was too dry to begin with. I guess it comes from geography, we usually battle the rain here, you more than likely contend with the heat more where you are.