Food storage economies among hunter-gatherers have been fundamentally important in research within anthropological archeology. It is well recognized that food storage was a key element in the evolution of hunter-gatherer societies. This paper examines storage facilities utilizing a digital planimeter to evaluate the volume and morphology of storage pits in the Jomon period (ca. 13,750-500 cal. BC). Quantitative analysis of Jomon storage pits shows temporal and spatial variability in terms of size. This research demonstrates that the quantitative analysis of storage pits is an effective way to improve our understanding of storage and its role in the Jomon economy in particular and subsistence adaptations in general. Thus, this approach has potential applications to other storage economies worldwide. (C) 2009 Elsevier Inc. All rights reserved.