In this ejectment action, plaintiff appeals a judgment for defendants.1 The issue is whether plaintiff acquired the disputed land by virtue of a deed from Linn County or whether it was added to defendants’ land by accretion. We determine that the evidence supports the trial court’s conclusion that defendants’ land is riparian and that the disputed land accreted to their land. We therefore affirm.
The disputed land is located on the South Santiam River east of Lebanon. In late 1852 or early 1853 surveyors under contract to the General Land Office conducted a survey to establish section lines and meander the river.2 Later in 1853 a different surveyor surveyed the Ridgeway Donation Land Claim, locating it generally south and east of the river in an area where the river flows north and then bends to the east. Defendants trace their title to the Ridgeways, the original patentees. The Ridgeway and other donation land claims took most of the land in the area, but across the river to the north of the Ridgeway claim was about 20 acres of unclaimed land known as Government Lot 1. It later passed into private *141hands. Plaintiff is its present owner, having acquired it from Linn County, which bought it for unpaid taxes at a sheriffs sale in 1939. In 1853, Government Lot 1 and the Ridgeway claim were separated by the river. The southern edge of Government Lot 1 bordered the river; whether the northern edge of the Ridgeway claim also did is the decisive issue in this case.
In the years from 1853 to 1964 the river gradually moved northward, eating away Government Lot 1 and adding land on the river’s south side.3 The result was that the remaining portion of Government Lot 1 north of the river is less than half the original lot and that a large amount of land has been created directly north of and contiguous to the Ridgeway claim. Plaintiff claims the land between the north line of the Ridgeway claim and the 1964 river line by virtue of the county’s conveyance to it of Government Lot 1 and of a separate parcel, described by metes and bounds, which corresponds to the 1853 bed of the river.4 Defendants claim the land as an accretion to the Ridgeway claim.5
The Ridgeway claim is described in the patent solely by metes and bounds. The description does not include a call to the river or to its banks, nor does it mention meander lines. However, there is evidence to support the conclusion that the line in question is close to the General Land Office meander lines or is between them and the 1853 location of the river. The notes of the surveyor who surveyed the Ridgeway claim state that, at the points in issue, the line runs from meander station to meander station. At least some of those meander stations are different from those used in the Government *142Land Office survey. A surveyor testified that it was not unusual to find that one surveyor would meander a river in one place and another surveyor later would also survey along the meander lines, but would pick different stations. Neither surveyor needed to be particularly concerned, because the actual boundary would be the river, not the meander lines. There is substantial evidence to support the trial court’s finding that the northern boundary of the patented Ridgeway claim was the river.
The facts that the description in the patent to the Ridgeways does not refer to the river and that it is necessary to examine the surveyor’s field notes to determine that the boundary was intended as a meander line are irrelevant. When land is granted according to an official survey, the notes, lines, descriptions and landmarks are as much a part of the grant as if they were stated in the deed. Cragin v. Powell, 128 US 691, 696, 32 L Ed 566 (1888). To hold otherwise would leave ungranted riparian land between the Ridgeway grant and the river; we strive to construe grants and deeds to avoid such ungranted strips. Because the grant to the Ridgeways was made with reference to meander lines at the crucial location, the grant included the right to accretions.6 State v. Imlah, supra n 2, 135 Or at 73. The trial court’s findings that the disputed land is an accretion to the Ridgeway claim and that the accreted land belongs to defendants are amply supported by the evidence.7
Affirmed.