Habitat Assessment Monitoring
Have you ever spent a few hours walking in a stream? This is your chance!
A habitat assessment combines visual observation and in-stream measurements to assess the quality of the stream’s habitat for fish and other aquatic life. It’s a valuable screening tool that can identify stressors, such as bank erosion or poor fish cover, and potential stream restoration opportunities.
With over 45,000 miles of wadeable, perennial streams in Wisconsin, volunteers play an important role helping to gather stream habitat data in areas that biologists may not have visited or visited many years ago.
What is Measured
The goal is to walk the stream while measuring seven physical habitat characteristics that impact a healthy fish community:
- Width of undisturbed riparian vegetation along the stream
- Extent of erosion along the stream banks
- Extent of fine sediments covering the stream bed
- Amount of pool habitat available for fish
- Amount of cover available for fish
- Frequency of riffles or bends (habitat diversity)
- The width-to-depth ratio (wide and shallow stream vs. narrow and deep stream)
How the Data is Used
The WAV Stream Habitat Assessment method is useful as a screening tool:
- to identify fish habitat stressors and beneficial habitat features along a stream
- to help identify priority areas for management and restoration, and
- for volunteers to learn about fish habitat needs and stream ecosystems.
Stream biologists use qualitative fish habitat assessment data at multiple stream stations throughout a watershed to identify whether the stream network has the physical habitat characteristics to support a healthy fish community.
By combining this data with fish surveys, as well as other baseline water quality data, biologists can identify where stream restoration or land conservation practices are needed to improve stream habitat for fish and other aquatic life.
Datasheets
The WAV method is designed for smaller wadeable streams that are less than 33 feet (10 meters) wide. Use our all-in-one worksheet and datasheet to measure and calculate your final ratings for each habitat parameter. You will only enter your final ratings and fieldwork comments in the SWIMS database.
Methods
Before you conduct a habitat assessment, review our training guide to understand the full process, timing, and best practices to safely and properly assess a length of stream for fish habitat.
Our factsheet describes some of the key concepts behind stream habitat, and differences between rocky and smooth bottom streams.
Habitat Assessment Training Videos
WAV Habitat Assessment Refresher Training
WAV staff recorded a training webinar where we used visuals to describe the methods.