The false spike (Quadrula mitchelli) is a freshwater bivalve native to central Texas and thought to be extinct until a small population, consisting only of mature adults, was located on the Guadalupe River in 2011. In fall of 2012, we located a small population of the false spike in another section of the Guadalupe River. This population, consisting of adults and juveniles, displayed evidence of successful reproduction and recruitment. We present a description of the physical habitat during low water-flow for this reproducing population of a critically endangered species.