Community and Hydropower Improvement Act This bill modifies requirements for hydropower projects, including by accelerating and coordinating the environmental review of the licensing of hydropower projects; expediting the licensing process for closed-loop or off-stream pumped storage projects; expediting the licensing process for certain nonfederal hydropower projects at existing nonpowered dams; increasing the involvement of Indian tribes in the licensing process; directing federal agencies and Indian tribes to consider certain effects of dams, such as any adverse effects on fish species; requiring the Federal Energy Regulatory Commission to issue regulations that establish procedures for license surrender proceedings initiated by licensees; and establishing a Licensing Administration Reimbursement Fund.