The Snowy Montane River Increased Flows (SMRIF) program identifies five montane rivers to receive environmental water. The water availability for SMRIF is linked to the water availability for Snowy River Increased Flows (SRIF) (Williams 2017), which is determined by the water recovery in the western rivers and the preceding climatic conditions. The SWIOID 2002 provides for SHL to forego up to 150 gigawatt hours (GW h) of electricity generation to allow for environmental releases to be made to SMRIF. This value of 150 GW h is converted into a volumetric allocation, but the conversion factor differs depending on the location of the releases in the Snowy Mountains Scheme, and thus influence the overall volume released. In some locations water released can be re-used to generate electricity so a smaller conversion factor is applied (SWIOID 2002), however, where water is lost to the Snowy Scheme a higher conversion factor is applied.