New peak-flow regression equations were made available in StreamStats version 3 for Massachusetts on May 12, 2017 and in version 4 on June 14, 2017. The new equations can be used for estimating the 50-, 25-, 10-, 2-, 1-, 0.5, and 0.2-percent annual exceedance probabilities. The new equations, which are not yet available in beta version 4, are from the report: