The Highland Lakes on the Colorado River were created to help manage floods and capture water when it rains to ensure the region has a reliable water supply during dry times. Lakes Buchanan and Travis – the region's water supply reservoirs – provide water for more than a million users, including communities, industries, businesses, agriculture and the environment in the lower Colorado River basin. Together, lakes Buchanan and Travis can hold about 2 million acre-feet of water. It's important to note that none of the Highland Lakes are constant-level lakes.
Inflows and lake level projections
In April, rainfall was above normal across the Highland Lakes watershed and lakes Travis and Buchanan remained essentially full. Inflows into the lakes in April totaled 97,638 acre-feet – about 95.5% of the historic monthly average. This follows two months of drier weather and below-average inflows. Inflows are the amount of water flowing into the lakes estimated from measurements at four gauges upstream. (An acre-foot is 325,851 gallons.)
LCRA projections for Lake Travis and Lake Buchanan show lake levels remaining above normal through summer, even if conditions turns dry.