Martis Valley is a geographic area of 70 square miles (180 km2) in the United States, extending northward from the North Shore of Lake Tahoe, California, to the west of the California-Nevada border.
[4] A larger lake, Martis Creek Reservoir, was built in 1972 by the United States Army Corps of Engineers as flood risk reduction for Reno, Nevada.
[20] The plan would include 760 condominium units and luxury homes with 6.6 acres of commercial development on Brockway Summit ridgeline overlooking Lake Tahoe.
[21][22] In October 2016, the Placer County Board of Supervisors approved the controversial development proposal,[23] in spite of wide-spread opposition from area residents and local conservation organizations, including Sierra Watch.
[24] Sierra Watch, along with the Tahoe-based League to Save Lake Tahoe and Truckee-based Mountain Area Preservation, filed suit to overturn those approvals for violating the California Environmental Quality Act in November 2016.