A fundamental part of effectively managing a stream is knowing what the problems are and where they exist. A Stream Corridor Assessment is a method to document the conditions in the stream and prioritize actions to improve or protect the stream’s health. The HDSS approach is well-suited for collecting, documenting, and prioritizing conditions in a stream corridor. HDSS provides high-definition video of the stream corridor linked to a database of information that is easily mapped in GIS software (Figure 1).
A wide variety of conditions can be classified from the HDSS video like locating large woody debris and log jams (Figure 2), water intakes and poor streambank conditions (Figure 3), or trash (Figure 4) to name a few.