Oregon Administrative Rules
Chapter 141 - DEPARTMENT OF STATE LANDS
Division 88 - RULES GOVERNING THE ESTABLISHMENT OF RESTRICTIONS ON THE PUBLIC RECREATIONAL USE OF STATE-OWNED LAND
Section 141-088-0090 - Closure of Sand Lake Estuary

(1) All submerged and submersible land under the jurisdiction of the Department below Head of Tide within the Sand Lake estuary is closed to any and all use by motor vehicles. Excepted from the estuary closure are Government-owned vehicles on official business, motor or non-motorized boats, vehicles used in the launching of boats at designated launching sites, public and private utility vehicles performing company business, vehicles involved in rescue or emergency activities, and vehicles engaged in repair of fences and placement of bank protection material.

(2) Head of Tide means the inland-most extent of tidal influence as measured by an increase in water surface level at Mean High Tide (Mean Lower Low Water Datum).

(3) The elevation of Mean High Tide corresponds to a tide stage of 7.5 feet (Mean Lower Low Water Datum). The Head of Tide in the Sand Lake estuary extends to the upper limit of the lake. (Sections 19, 20, 29, 30, 31 and 32 of Township 3 South, Range 10 West, Willamette Meridian.)