Framework / Assessment California Forests and Rangelands: Proposed Indicators Summary Evaluate impact of warmer climate conditions on spring runoff, timing of peak flows, and seasonal water availability. This is calculated as the percent of the total water year runoff derived in Spring (April – July). Spring warming releases water as snowmelt. Recent studies by DWR show a declining trend in Spring runoff that is indicative of warmer winters and earlier Spring warming. This has implications on water availability across a range of beneficial uses. In addition, it can lead to reduced base flows and that may lead to early drying of forest vegetation and effect wildfire conditions.