Thanks Dave. In this study actual angling morts should be minimal (much lower than most ponds or small lakes). It was done on Barnett Resv. (33,000+ acre river fed impoundment) with some but not a lot of fishing pressure and creel limits. Can you give us a easy to understand explanation of what we are seeing in the figure above on the average (not focusing on % morts) populations. I am trying to understand what the charts tell us other than your explanation of assumed % morts.. This is a fairly balanced fishery with good growth in WC , LMB , TShad , BG , RES , HSB (and parentals) , cats as well as rough fish ( carp , bowfin , gar , chain pickerel ,ect). Not a lot of yearly water elevation change 8 ft max.(from flood to low pool) and not a deep lake (my guess 75 % of water area between 4 and 20 ft).