Jamestown 16 refers to a specific paddling location on the Upper Shannon River in County Tipperary, centered around the Jamestown weir. This weir is a well-known and established feature for both paddling and angling. The water immediately below the weir presents specific hazards that require attention; it is described as shallow, with eddy lines that are notably boily. This indicates a dynamic and potentially challenging hydraulic environment directly downstream of the structure, suitable for experienced paddlers familiar with moving water features. The overall character of the spot is defined by this active river feature, making it a destination for those seeking technical practice or a more engaging paddle than flatwater. The presence of anglers suggests a shared-use area, so paddlers should be mindful of other river users. The location's reputation as a known spot implies it is a recognizable landmark on this stretch of the Shannon.