Adequate summer stream flows are critical to juvenile steelhead survival in the Potlatch River. When flows diminish during the summer, juvenile steelhead and other fish get trapped in isolated pools until fall rains re-charge the water in the streams. In some years, the lack of flow, low oxygen, warm temperatures, and lack of cover in these pools affect the ability for fish to survive the summer. IDFG studies have shown a strong relationship between juvenile steelhead survival and summer flows in the Potlatch, with higher survival during years of higher flows.