Lower Colorado River Multi-Species Conservation Program Amendment Act of 2024

This bill establishes a new interest-bearing fund within the Treasury to manage non-Federal contributions for the Lower Colorado River Multi-Species Conservation Program. It requires the Treasury to deposit existing and future state contributions (from participating states) into this fund, which can then earn interest through U.S. government securities. The fund's principal and interest are available for program expenses as specified in the existing funding agreement, without needing new annual appropriations. This directly affects the participating states (referred to as "State Parties" in the agreement) and the federal Treasury, streamlining how conservation program funds are held and invested.