Ecological surveys such as fish census or stream habitat assessments are necessary to provide data for assessing the current conditions of an ecosystem. A fish census provides a snapshot into the populations (i.e. diversity) of fish species within a segment of stream. A stream habitat assessment can provide insights into the current habitat conditions of epifaunal substrates, re-oxygenation zones, and embeddedness of the stream bottom. Using quantitative metrics these assessments can provide one time or on-going monitoring of these aquatic resources. Biological Systems Consultants’ team of scientists are familiar with various state protocols and routinely perform these types of assessments.