TBY Boundaries

To capture the popular and primary birding and residential locations of the greater Tahoe area, while establishing a discrete and easily defined area, AND to conform to the boundaries of the Tahoe Wildflower Big Year and Tahoe Nature Chase, the boundaries for the 2018 Tahoe Big Year have been expanded somewhat from the 2015 event. The boundaries are now as follows:
  • Within the boundaries of the hydrologic Lake Tahoe Basin
  • Any portion of California within the hydrologic Truckee River watershed.
  • Please note that Boca, Stampede, and Prosser Reservoirs now are WITHIN the boundaries of the Tahoe Big Year.
  • Due to the popularity of both the Pacific Crest Trail and the Tahoe Rim Trail, and the fact that no species are likely to be observed from those trails that cannot readily be found within our boundaries as defined, any birds seen from these trails that fall just outside of the above-defined boundaries will be deemed "close enough."
  • Additionally, the Tahoe Wildflower Big Year boundary has two minor extensions extending to capture Round Top at Carson Pass and parts of the Mt. Rose Wilderness Area. As the 2015 event already had an extension at Mt. Rose, we have incorporated these two extensions for consistency's sake with the Tahoe Wildflower Big Year and Tahoe Nature Chase.

Tahoe Big Year Boundary Map