How much of the heavy snowpack will end up in Lake Powell?

A heavy snowpack is expected to produce the most water flowing into Lake Powell in more than a decade. Hydrologists predict the melt will flow into the drought-stricken reservoir at 177% of average, the most since 2011. The bulk of the snow melt is expected to happen in May and June. The extra water won’t be enough to make up for 23 years of drought.