Lake Travis Water Level Forecast (as of 5/1/2021) Forecast: David Ferreira (Resume) Data Source:   Lower Colorado River Authority   This document is not intended for publication and is only a personal record of a forecast made on 5/1/2020, for tracking purposes. Historical   Forecast Forecast Data   Mean Lo.80 Hi.80 Lo.95 Hi.95 Actual Δ %Δ May-2021 656.9 651.0 662.9 647.8 666.1 659.9 3.0 0.46 Jun-2021 658.2 649.1 667.2 644.3 672.0 665.6 7.4 1.12 Jul-2021 655.8 644.0 667.5 637.8 673.7 666.6 10.8 1.65 Aug-2021 652.9 638.7 667.1 631.1 674.7