Fishing forecast (December through February): The reservoir is typically open water during December. Low water levels usually result in Oasis being the only boat ramp anglers can launch from during the fall and winter. Fishing is generally fair for both shore and boat anglers through December and into January. Ice normally begins forming throughout the reservoir in January, and may have fishable ice (ice that is at least 4 inches thick) in areas the latter half of January. Ice thickness is extremely varied, and ice conditions change quickly at Yuba. Use extreme caution and check with Yuba State Park for current ice conditions. An ice safety guide is available here. As the reservoir begins to fill/recharge late January through February, the reservoir is typically a mixture of ice up lake (Painted Rock area east to the Sevier River inlet), and open water closer to the dam. By March, the majority of the reservoir is open water, and the northern pike are beginning to spawn up lake.