Wallowa Mountain Institute





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What is the Wallowa and Imnaha River WET Program monitoring?

Starting in 2007, High school and middle school students from Wallowa County have been collecting data and creating a database on a variety of water quality and watershed function parameters. In the field, a team of students guided by a staff collect data in one of four areas. These parameters are as follows:

General Stream Survey & Stream Shape Information, including:

• Photo Points & GPS location of stream reach
• Current weather & weather in past 24 hours
• Air temperature
• Water smell & appearance
• Land use in area
• River bottom (substrate) type(s)
• Riffle/Pool/Run ratio

Joseph Hi students at Prairie Creek

Water Quality Data, including:

• Dissolved Oxygen
• Water Temperature
• pH
• Nitrate
• Phosphate
• Turbidity
• Biological Oxygen Demand (BOD)
• Fecal Coliform Bacteria

Water Chemistry

Riparian Vegetation Information, including:

• Vegetation along the stream bank (sides of river)
• Vegetation leading away (perpendicularly) from the river banks
• Canopy Cover

Joseph Hi students at Prairie Creek

Aquatic Life Data, including:

• Categorization of aquatic life into 4 groups:
    1) Pollution Sensitive
    2) Slightly Tolerant to Pollution
    3) Fairly Tolerant to Pollution
    4) Very Tolerant to Pollution
• Above information used to create a Water Quality Rating Index (essentially a grade for the health of the river).
• Indexing of Mayfly, Caddisfly, and Stonefly species (Ephemeroptera, Plecoptera, and Tricoptera (EPT)) to gain a value (EPT Value).
• EPT Value also measures the health of the river.

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