What is the source for the WA aquatic insect emergence chart?
• The emergence chart was assembled based on information contained in the WA Dept. of Ecology’s ECY database, Xerces Society’s Stream Bugs As Biomonitors CD, numerous web-based WA hatch charts, Western Hatches by Hafele & Hughes, Western Mayfly Hatches by Hafele & Hughes, and Hatch Guide for Western Streams by Jim Schollmeyer. Access the emergence chart by clicking here.