Arve Sjovold considers the issue of dry year deliveries:
” … The problems of water deliveries from these two regimes [dry years and wet years] are quite different. Water-years in the wet regime are generally no problem except for the hydraulic characteristics of the San Joaquin Delta in transferring water from north to south: There is plenty of water for all claimants. The dry regime presents great difficulty since there are so many claimants to river runoff and there are river management requirements to be dealt with. … “
Read the full commentary here: Will There Be Enough Water for the Twin Tunnels?