yup, maybe sad, OTOH....its a diamond in the rough.
i dug a deep creek channel from the shallow upper end of pond connecting to the deeper areas of lower end (dam side) of pond, this way after 6 feet of evap over summer, there was still a colder water reservior for fish across the entire length of pond, it also added underwater structure during high water level. for creek channel digging, you just have to be careful of creating new leaky zones.
since my pond is in bedrock, i didnt have much choice with sculpting the pond sides. so around inside edge of pond, i enhanced existing cliffs, and built mostly steep uniform slopes to help control vegetation, and subsequently put my fish structure (fish craters) out in middle of pond. with the 6 ft of evaporation i had this year, the shallow end pond bottom actually became (created) a series of ledges as the pond level went down, and this was the prime breeding grounds for my gams and GSF, so in yer situation, i would consider slopes and ledges (terraces) along inside pond edges at varying depths to continually create structure at the proper depths as pond water evaporates.
