"The redesign shifts the northern portion of the tunnel system a few miles to the east, away from the towns of Hood and Courtland and closer to Interstate 5. It also shortens the tunnel's length by five miles, to 30 miles, and slashes the size of a water storage area near the diversion point from 750 acres to 40 acres.
The redesign cuts the footprint of permanent facilities by about half, to 1,851 acres, and moves some land uses from private to state-owned lands."