The delta smelt is on a trajectory toward extinction in the wild. Heading into 2017, the spawning adult population was at an all-time low, although this past wet winter has apparently seen a small resurgence. However, increasingly warm summer temperatures in the Delta may dampen any upswing. Given the long-term trajectory of the population and climate predictions for California, maintaining delta smelt in the Delta for the next 20–30 years is not likely to happen without significant improvements to the habitat.