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CASE STUDYPLSS 3 MILE RULE SUBDIVISION OF
SECTIONS(INDIAN LANDS)
Warm Springs Indian Reservation
OR….Searching for 100+ YearOld Sticks and Stones with
Autocad and Survey Grade GPSEquipment
Warm Springs Indian ReservationWasco and Jefferson County Oregon Sections 35&36 T8S, R11E WM Sections 2&3 T9S, R11E WM
Free Information from BLM
Original GLO Plats
(Government Land Office)
Warm Springs Reservation
39 Townships
235 Files (Plats)
311 Mbytes Data
http://www.or.blm.gov/lo/
Sample 3 Mile Subdivision PlatT8S, R11E, WM
Details of Sec 35 and 36, T8S, R11E WM
East-West Subdivision Lines1887 Mc Quinn & Campbell
Sample 3 Mile Subdivision PlatT9S, R12E WM
Details of Sections 25,26, and 27T9S, R12E, WM
North-South Subdivision Lines1871 Handley
Typical Survey EquipmentMid-Late 1800’s
Staff Compass Surveyor’s Chain
General DescriptonThis is the description forT9S, R12E, WMThe township where Warm Springs is now located.
Note: The “URGENTLY NEEDED” work to subdivide some sections in 1871.
Normal Subdivision SurveyRed = Surveyed Lines (7 miles of survey)
Three Mile Rule SubdivisionRed = Surveyed Line, Green = Cardinal Direction
3 Mile Rule Subdivision LandsWarm Springs Reservation
(Urgently Needed Late 1800’s)
3 Mile Rule + Existing Allotments Warm Springs Reservation
Present Day
Warm Springs Reservation
Warm Springs Reservation RTK Survey Base Stations
Sidwalter FlatCounty Line Road
3Mile Rule Subdivision
Existing AllotmentsRed = 100+yr Old Urgently Needed
Cyan = Present AllotmentsWhite = GPS Base Monuments
Green = Section LinesYellow = Township Lines
Project Area County Line Road4 Sections – Search for 36 Stone Monuments
Original GLO Notes
Available at Local
County Surveyor’s Office
Or State BLM Office
Either Micro-fiche or paper copies
Pay by the sheet for duplicating costs
Estimate 1 sheet per mile of surveyed line
Sample Original GLO Notes
Final Notes on Second Page
Beginning of 3 Mile Subdivision
Brass Cap ¼ Corner Between Sec 34 T8S, R11E WM &
Sec 3 T9S, R11E WM
Problem:Missing GLO records to show when this brass cap was placed. Broken chain of evidence. Assume corner re-monumentation was done around the 1920’s? Lincoln E. Wilkes worked in adjacent township in 1918, but no plat filed for these townships. Records may be with state BLM office? Existing monuments not set firmly in ground.
Need to Prove Correct Locations for Existing Brass Cap ¼ Corners
My Solution:
Use Original GLO notes for 3 mile rule subdivision of sections to find scribed stone monuments for the nine interior 1/16 corners
within each section.
If interior monuments agree with predicted positions from suspect brass caps on exterior boundary of section accept unknown sourced
brass caps as accurate.
Sample 1/16 Corner Breakdown of Section
Note: Mounds are NOT corner monuments.
Mounds constructed ALONGSIDE scribed stone monuments in cardinal directions (N,S,E,or W).
Scribing normally on flat face on north side of stone monument. Occasionally on bottom of stone, may be partially buried in ground.
Tools Used for Search of Stone Monuments
Trimble 4700 Rover set on
mound of stones near 1/16 corner.Sec 2 T9S, R11E WM
1/16 Corner Stone in Section 2 T9S, R11E WM
Note:Split rail fence posts found in sagebrush. Remnants of stone fence to North. Stone temporary facing south for picture. Returned to original position after photo.
1/16 Corner Stone in Section 2 T9S, R11E WMNote:
Mound to right of surveyor partially below juniper tree North of stone and stone partially buried.
1/16 Corner Monument Section 3 T9S, R11E, WM
Scribed Stone Markings
¼ Corner
Scribed Stone
Markings
1/16 Corner
Sample Topo Calls in Notes
Sample Topo Calls in Original Notes
Topo Call to Spring
Topo Call to
10” Tree
Topo Call to house
Adjacent Home Site
Old Homestead (Within Section)
Foundation Storage BuildingApprox 1 Chain North of House Call
15’ x 25’ Rectangular Stacked Rock Foundation
Typical Storage Building
Disturbed Site No Original Undisturbed Evidence
Summary of ProjectAll With Survey Grade GPS
Radial Type SurveyGathering 180 Second “Control Point” Type Data
52 Unknown Source Brass Caps Located2 Suspicious (Non-Typical) ¼ Corners Being UsedSearched for 36 Old 3-Mile Subdivision 1/16 Corners Found:
19 Stone Monuments 13 Accessory Rock Mounds 4 Sites with no current evidence
End of Presentation
Thank You