ICOLD Bulletin 211, Hydraulic and Structural Design of Chute Spillways with Stilling Basins and Upgrading of Spillways, is now available. It provides guidance on spillway design, energy dissipation and upgrading existing spillways. ICOLD Bulletin 212, Surveillance of Spillways, is also available. It provides guidance on inspecting and monitoring spillways, identifying deterioration and assessing their performance. Both documents can be downloaded from the ICOLD website - https://www.icold-cigb.org/GB/publications/bulletins.asp