Project Final Report-08122-40-The Piceance basin, Colorado, is a hot-spot for exploration and production of natural gas from tight-gas sandstones in the Rocky Mountain region. More than 400 tcf of in-place gas is estimated to be held within tight-gas and basin-centered gas accumulations in the Piceance basin alone. However, the regional stratigraphic framework and detailed understanding of stratigraphic controls on tight-gas distribution and production in this basin are incomplete. This study evaluates stratigraphic controls on the location of “sweet spots” within the Piceance basin.