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•Our research on the Yakima watershed
•An introduction to watersheds
•An introduction to water quality
Our Research on the Yakima Watershed Research Goals:•To assess water quality in the lower
Yakima watershed
Research questions:•How do certain water quality parameters
change in the within the Yakima watershed?
What is a Watershed?
•It is an area of land where water (ground water or precipitation) drains into the same body of water
•Watersheds A.K.A. drainage, catchment, river or water basins
Watersheds Have a Variety of Forms
Estuary
The Pacific Ocean
The Amazon River
The Great Lakes
WetlandsThe Black Sea
Reservoir
Watershed Structure
•The upper most boundaries are the ridges of mountains and hills
Cascade Mountains
Appalachian Mountains
Tributaries•Are small watersheds or sub-watersheds
that join together to form a larger watershed which is called a basin
Water Quality; A Brief Introduction•Measure the condition of water relative to
environmental needs or intended uses •Is the physical, chemical & biological
characteristic of water•Water quality is often compared to set
standards
Characteristic of Water
1) Physical - pH, temperature, turbidity, suspended solids.
2) Chemical – dissolved oxygen, salinity, nitrates, phosphates, biochemical oxygen demand.
3) Biological - insects, micro-invertebrates and animals
Research Goals:To Assess Water Quality in the Lower Yakima River & Two Tributaries.
• First we have to do background information