For example, drain pipes, concrete bridges, and rip rap are all common pond structure. Notice subtle points and turns. Check every downed tree. Transition areas between soft bottoms and harder sand at beaches are good. Remember where weedbeds were last year.
Green leaves produce oxygen and attract fish.
These weeds are probably at those same spots now, but well below the surface. Rocks and rip-rap that touch the water, especially on the north side, are among the first to warm. Small, mossy, dark-bottomed shallow bays also are key. Feeder creeks or drainage ditches may empty warm water into the pond after a rain. Manmade cover and structure may seem a bit unusual at times.