Stream Corridor Assessment

F. X. Browne, Inc. staff has used a wide variety of geomorphic and habitat-based assessment techniques to identify and prioritize stream restoration targets, provide baseline habitat inventories, and assess the effectiveness of river restoration programs.  We take advantage of a full suite of remote sensing technologies to analyze broad-scale patterns in landuse, valley morphology, and stream type.

For example, during our initial assessment work for many of our projects we use aerial photographs and digital elevation models to determine Rosgen Level I classifications for large river segments.  We combine the stream type analysis with an analysis of landuse patterns to develop a list of “most probably impacted” and “most at-risk” stream segments.  Using this approach, we can identify and prioritize large river segments for more detailed assessment work.

Stream Restoration

F. X. Browne, Inc. is a forerunner in the field of bioengineering and stream restoration.  We apply fluvial geomorphology and hydraulic principles to integrate individual treatments into an overall, cohesive design.  F. X. Browne, Inc. has developed GIS databases of remotely-sensed and field-collected assessment information. 

These database systems allow quick retrieval of information concerning the condition and level of impairment of major stream segments, minor stream segments, and reaches.

 F. X. Browne, Inc. has developed prioritization strategies to be used in conjunction with stream assessment databases.  These strategies allow the user to rank stream reaches in order of restoration priority, risk of degradation, or habitat value.  This system allows for the establishment of long-term restoration implementation plans and the most effective use of restoration funds.

Initially, we use Rosgen geomorphic assessment and classification and a thorough understanding of the science of fluvial geomorphology to understand the behavior of a stream, diagnose problems, and develop solutions.  We then use natural channel design procedures to develop regional curves and collect reference reach data for each project. These data form the basis for creating stable, functional stream channels.  We then use hydraulic modeling data to design appropriate individual treatments and structures.  Our designs are structurally sound, yet maximize the use of natural materials and native plants to achieve stabilization and habitat enhancement. 

 F. X. Browne, Inc. staff presents workshops around the country in stream restoration.  Often, these workshops are attended by other consultants who wish to increase their understanding of the current techniques and methodology.