The “Fish deep, Fish early, etc” saying still applies just about everywhere. The only exception might be for presenting dry speckled dun and damselfly patterns in the event rising fish are spotted. On most of our reservoirs the top several inches of water are warmer than below and therefore of less comfort when fish move into this level. This suggests that only a dense emergence of these insects will bring fish to the top and that in other situations they are more likely to feed at lower depths on such as nymph, leech, and pupa forms simply because of higher dissolved oxygen concentrations. Thus be sure to include these “deeper water” patterns in that fly box even though you may spot fish rising.