In the most arid parts of their range, pronghorn population sizes are small or declining. While more northern populations are winter limited, evidence suggests that these southern populations may be restricted by free water availability. Water may be limiting in arid environments in two ways: first, pronghorn may require additional water sources during lactation. Perhaps as importantly, in Mediterranean climates like much of California, vegetation senesces often before parturition occurs. Additional free water may help pronghorn digest brown, dried vegetation. Therefore, a large scale, collaborative effort in the Carrizo Plain, California, to provide additional free water sources for pronghorn was initiated in 2023. Here we present results of the first year of monitoring during and after water trough installation. Pronghorn visited troughs extensively, mostly during daylight hours, and found new troughs less than a month after installation. Visitation appeared to peak in the summer months. Other wildlife, were recorded using the troughs, including tule elk, wild pig, kit fox, and coyote. However, potential competitors and predators visited at night. Future efforts will document the impacts of supplemental water on fecundity, survival, and population growth.