The Outdoor Recreation Satellite Account (ORSA) measures the size of the outdoor recreation economy and the link between outdoor recreation and the broader United States economy. Like other satellite accounts, the ORSA was built on BEA’s comprehensive supply-use framework. The supply-use tables provide a detailed look at the relationships among industries and how each industry contributes to Gross Domestic Product (GDP). In practice, the ORSA is a rearrangement of the published supply-use tables that isolates outdoor recreation spending and production. For example, the supply-use tables show the production of all apparel, whereas the ORSA shows the production of apparel used specifically for outdoor recreation activities, such as wet suits and hiking boots. A variety of private and public data sources were used to identify outdoor recreation spending and production in order to develop the prototype ORSA estimates.