Refill After April 15. The City will fill Xxxx Xxxx as early and as full as possible after April 15 each year, subject to adequate runoff, anadromous fisheries protection flows (specified in the Skagit River Anadromous Fish Flow Plan), flood protection, minimized spill, and firm power generation needs. Subject to the above constraints and hydrologic conditions permitting, the City will achieve full pool by July 31 each year.