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 February, rainfall was 1-2 inches below normal across the Highland Lakes watershed. Inflows into the lakes in February totaled 67,234 acre-feet – about 82 percent of the historic monthly average. This marked the first month since August 2018 that inflows were below average, as widespread rains filled the lakes and caused significant flooding in late 2018. 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 spring, even under dry conditions.