The
Environmental Integrity Index (EII) is a tool developed by the
City of Austin's Environmental Resource Management Division to
monitor and assess the ecological integrity of Austin watersheds.
The EII program monitors over 161 sites within 66 watersheds.
The monitoring of these 46 watersheds is organized into three
separate phases (see map below). One phase is sampled each year on a
three-year rotation. Water chemistry data is collected quarterly
and biological and habitat surveys are conducted once per year
in the summer. |
