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Pacific Salmon Explorer
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Stream Flow

This condition indicator provides information on annual patterns in stream flow for the selected monitoring station. The 20% mean annual discharge (MAD) and 10% MAD thresholds indicate flows below which fish may be negatively impacted.

Median Historical Flow
Range of Historical Flow
Most Recent Year
Stream Flow
Columbia River (Twelve Mile Ferry)
20% MAD: 185.6 m³/sec
10% MAD: 92.8 m³/sec